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Author SHA1 Message Date
Danny Avila
8a46ca070c
🧊 feat: Persist Context Fading Tier Across Agent Runs (#15505)
* 🧊 feat: Persist Context Fading Tier Across Agent Runs

Carry the pruner's latched context-fading tier from `@librechat/agents`
through `contextMeta` the way `calibrationRatio` already travels, so a
historical tool result keeps the same truncated bytes from one run to the
next and Anthropic's prefix-based prompt cache survives across turns
(danny-avila/agents#497).

- Add `IAgentFadingTier` to the message and conversation `contextMeta`
  types, schemas and the data-provider zod schema
- Add `isAgentFadingTier`, `resolvePersistableFadingTier` and
  `resolveRunContextMeta` in `packages/api`; a tier is persisted once it
  carries information (masking active or a budget below the window), and
  a latched tier is kept even at a neutral calibration ratio
- Seed `createRun({ fadingTier })` from the parent response's contextMeta
  regardless of encoding, since caps are character-based; the field rides
  the existing forward-compatible `runConfig` variable and older SDK
  versions ignore it, as does `Run.getFadingTier` being absent
- Accept a valid `fading` field in event actor context and reject a
  malformed one, matching the calibration checks
- Capture run context meta through one module-level helper for both
  completion paths instead of two inline copies

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Seed Fading Tier Across HITL Resume, Validate at the DB Layer

Address review findings on fading tier persistence:

- Leave the "is this tier worth persisting" decision to the SDK, whose
  `Run.getFadingTier()` now returns only informative tiers; comparing
  against the client's window misclassified untouched conversations
  whenever a reserve ratio was configured
- Carry `contextMeta` through the HITL pause projection (staged approval,
  job metadata, resume state) and seed the rebuilt client from it, so a
  paused turn resumes with the same tier and calibration instead of
  re-deriving a shallower one and rewriting the prefix
- Share run seeding between `chatCompletion` and `resumeCompletion`, and
  make capture tolerate partial runs and bare resume contexts
- Validate `contextMeta.fading` in `commitAgentEventActorState` with a
  shared `isAgentFadingTier` guard in data-schemas, so a malformed tier is
  rejected at the DB layer instead of silently cold-starting the actor
- Reuse `IAgentEventActorContextMeta` for `IMessage.contextMeta` instead of
  extending an inline duplicate

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 test: Cover Resume Seeding From Paused Context Meta

Assert the resume controller seeds the rebuilt client from the context meta
captured at the pause before rebuilding the run, and move the capture
helper's JSDoc back above its function.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧹 style: Sort Imports in Fading Tier Plumbing

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Persist Fading Tier Through Redis Jobs and Branches

Address Codex and Copilot review findings on fading tier persistence:

- Deserialize `contextMeta` in `RedisJobStore`, whose explicit read mapper
  rebuilt every other pause field but this one, so Redis-backed
  deployments resumed with no tier to seed after every HITL pause
- Copy server-private `contextMeta` onto the assistant message created by
  `POST /api/messages/branch`, so the next turn seeds its pruner the same
  way it would from the parallel source response
- Constrain the `fading` subdocuments in both Mongoose schemas (version
  enum, positive budget, required fields) to match the zod schema
- Throw a distinct "fading tier is invalid" error from both context meta
  validators instead of reporting a calibration failure

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Carry Context Meta Through Stop and Re-Pause

Addresses the second Codex pass on the fading-tier persistence:

- A re-pause whose resumed segment has nothing persistable now clears the
  job's `contextMeta` in the same transition instead of leaving the first
  pause's calibration and tier for the next resume to seed from.
- The client publishes the run's live calibration and fading tier onto the
  job after each pre-invoke context snapshot (deduplicated on value), and
  the Stop path copies `jobData.contextMeta` onto the stopped response, so
  a follow-up from a stopped turn keeps the prompt prefix stable.
- Mid-run captures (HITL pause, Stop) read the graph's live state; `Run`
  refreshes its own getters only after the stream settles, so the pause
  used to persist the seeds it started from.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Fence Context Meta Publication Ahead of Stop

A Stop handled by another replica reads the job before the owner is
signaled, so a fire-and-forget publish could lose the race, and a run
stopped before its first context snapshot never published the tier it
inherited. The client now publishes the inherited seed before the run
streams or resumes, and the context-usage handler awaits each
snapshot's publish so the write lands before the model call it
describes begins. Failures still only log; the pre-run publish is
optional-called so bare resume contexts keep working.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Read Back Context Meta After the Abort Claim

The run owner publishes its context meta ahead of each model call and
awaits the write, so a publish landing between the abort's initial job
read and its terminal claim describes the call whose partial output the
abort snapshot carries. abortJob now reads the same-epoch job back after
the claim and content re-read and takes its context meta, so the stopped
response persists the tier that produced its bytes. The refresh is
best-effort and logs on failure like the content refresh beside it.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Share In-Flight Context Meta Writes and Clear Neutral Live State

Two snapshot callbacks in a parallel-agent run can capture the same tier
before the first write settles; the publisher now caches the in-flight
promise per serialized value so the second caller awaits the same
durable write instead of treating an uncommitted value as published.
A live snapshot with nothing left to persist after an earlier publish now
writes a neutral record (ratio 1, no tier), since a running job's fields
cannot be deleted through the metadata writer, so a Stop no longer
persists an earlier non-neutral state onto the response. The pre-run
seed publish is unchanged and is told apart from live snapshots by a
flag from the context-usage sink.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 chore: Drop Unused Rest Parameter in Context Meta Test

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 feat: Persist Per-Agent Fading Tiers as Compact Context Meta

Reconciles the host with @librechat/agents at 9aacad1a, where graph
history stays canonical and each Run derives a provider-only projection
from the latched tiers. LibreChat therefore persists only compact state:
the calibration ratio, the default agent's tier, and now the per-agent
tiers from Run.getFadingTiers(), stored as validated entries so agent IDs
never become MongoDB field names and restored onto a null-prototype
record for RunConfig.fadingTiers. Truncated messages, canonical tool
content, projection provenance and per-message truncation state are
never persisted; the SDK's latched flag is stripped on capture.

The per-agent map travels everywhere the single tier already did:
response contextMeta, event-actor checkpoint state, HITL pause and
resume job metadata in both stores, the Stop path, and branch creation.
A shared Mongoose definition keeps the message and conversation schemas
identical, the zod schema validates entries, and commitAgentEventActorState
rejects malformed maps. Comments no longer describe graph messages as
truncated; only the provider projection is.

Tests cover: tool results and inputs reach the persisted content parts
at full size; contextMeta carries exactly the compact tier and
calibration fields; a persisted snapshot round-trips into the seeded
RunConfig unchanged and prototype-safe; per-agent tiers survive pause,
Redis job round-trips, and event-actor context validation.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Restore Event Actor Types and Publish Seeds Before Abortable Setup

The previous commit's doc rewording in the conversation types dropped the
event-actor interfaces that precede the fading tier, which broke the
declaration bundle in CI; they are restored unchanged.

The inherited context meta is now published onto the job as soon as the
parent's state is loaded and awaited at the top of chatCompletion and
resumeCompletion, ahead of run creation and the other abortable setup
stages, so a Stop during setup still persists the parent's tiers onto the
stopped response. The partial response saved when every subscriber
disconnects now carries the job's context meta like the Stop and pause
paths do. The branch route keeps the source's context meta in the saved
message but strips it from the HTTP response, matching client reads.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Serialize Distinct Context Meta Publications

Overlapping snapshots from parallel agents could carry different tiers;
each started its own write and both job stores keep whichever write
finished last, so an older snapshot could overwrite a newer one. Each
distinct publication is now issued after the previous one settles, in
call order, so the newest snapshot is what a Stop reads back. Equal
values still share one write.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Project Root Message Reads and Keep Inherited Meta on Setup Failure

The root GET /api/messages paths returned raw documents: the
single-message query read called getMessages without a projection and the
cursor page performed an unprojected find. Both now apply
CLIENT_MESSAGE_SELECT, with getMessagesByCursor accepting a select option,
so the persisted fading tiers never reach the client through the
paginated endpoint; the search-hydration read projects the same way.

A turn that loads a parent's context meta but fails before its run exists
used to replace the inherited meta with the capture of a missing run, so
the persisted error response lost the last valid tiers. Both finalizers
now keep the inherited meta when no run was created while a created run's
neutral state may still clear it.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 refactor: Move Context Meta Publication Into packages/api

The publication coordinator (ordering, deduplication, in-flight sharing,
failure state) now lives in packages/api as createContextMetaPublisher,
with selectRunContextMetaToPublish deciding what a publication carries;
the legacy client keeps only the wiring to the job metadata writer. A
transiently failing write is retried with a short backoff before the
publication is reported and forgotten, so a snapshot's model call no
longer proceeds on the first rejection while the job holds the previous
record. The SDK swallows handler errors, so retrying is the only way to
strengthen the fence without failing the turn.

A terminal save now supplies contextMeta: null when the finished run has
nothing to carry, and saveMessage unsets a previously stored value in
that case, so a disconnect snapshot's record cannot outlive the run that
completed neutrally.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Widen the saveMessage Method Type for the Null Unset

The exported method interface still typed contextMeta as the message
field, so the spec exercising the null unset failed typechecking; it now
mirrors the implementation signature.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Publish Every Agent's Snapshot, Sanitize Search Hits, Unbound Agent IDs

The context-usage handler now awaits the run's context meta publish for
every ON_CONTEXT_USAGE event, hidden sequential agents included, while
the visible-snapshot bookkeeping and the client emission keep their gate;
a Stop before the next visible snapshot finds the tier a hidden agent's
model call latched. Search results are built from the hydrated hit minus
its server-private contextMeta, since Meilisearch hydration projects every
schema field. The per-agent tier entry guard no longer caps the agent ID
length: ephemeral agent IDs encode endpoint, model and sender without a
bound, and dropping such an entry would let that agent alone re-derive
its tier on the next turn. Also formats the publication spec so the
static checks pass.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Unset Context Meta Atomically, Keep Publication State After a Failed Write

- `saveMessage` folds the `contextMeta` unset into the same update that
  persists the terminal response, on both the plain and the provenance-merge
  paths, so a failure between two writes can no longer leave a completed row
  carrying a disconnect snapshot's state.
- `createContextMetaPublisher` tracks whether any record has committed
  separately from the retryable latest publication, so `hasPublished` stays
  true after a later publication exhausts its retries and a following neutral
  snapshot still overwrites the earlier record on the job.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Carry Context Meta Through the Resumable Stop Route and Neutral Resumed Completions

- The resumable Stop route copies the refreshed `jobData.contextMeta` onto the
  terminal assistant message it persists, as the abort middleware already
  does, so a stopped resumable response keeps the tiers that produced its
  partial output.
- A resumed run that completes with neutral context state now saves
  `contextMeta: null`, which unsets the paused segment's record instead of
  letting an omitted field keep it on the completed row.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Trust Only Server-Authored Context Meta, Unset It on a Neutral Stop, Read It From the Job on Disconnect

- `POST /api/messages/:conversationId` and conversation imports drop any
  client-supplied `contextMeta`, and the run seeds its calibration and fading
  tiers only from a server-authored parent response, so a forged tier can never
  shape a provider projection.
- Both Stop paths save `contextMeta: jobData.contextMeta ?? null`, so a job that
  re-paused with neutral state unsets what an earlier pause stored on the row
  instead of leaving it behind.
- The disconnect partial save reads the same-epoch job record for the run's
  published context meta, since the client-facing resume snapshot never carries
  server-private state.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧪 test: Mock the Job Store in the Resume Metadata Spec

The disconnect partial save now reads the same-epoch job record through
`GenerationJobManager.getJobStore()`, so the resume metadata spec's manager
mock provides it as the other disconnect spec already does.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 🧊 fix: Keep Context Meta Off the POST Message Response

`POST /api/messages/:conversationId` returned the saved row verbatim, so a
client write against an existing server-authored message echoed the row's
stored context meta. The route now projects the row through the same client
projection the branch route uses, which drops the server-private field.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

* 📦 chore: Bump @librechat/agents to 3.7.16 for Persisted Fading Tiers

3.7.16 is the first release that carries danny-avila/agents#497, so
`Run.getFadingTier()` / `getFadingTiers()` now report the latched tier
this branch persists and `RunConfig.fadingTier` / `fadingTiers` seed the
next run from it. The dependency set is unchanged from 3.7.15; only the
package entry moves.

Adds an SDK-backed round trip to the fading spec: a first pruner latches
an informative tier, `resolveRunContextMeta` reduces it to the persisted
shape, and a second pruner seeded from that shape reproduces the first
run's projected tool-exchange bytes under instruction and calibration
drift, while an unseeded pruner under the same drift relaxes its tier and
rewrites them.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WNbgMeR2aZDyhsqAy4L8gF

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-09-02 20:29:43 -04:00
Danny Avila
0219513115
🛑 fix: Forward Run Abort Signal to Foreground Tool Calls (#15517)
* 🛑 fix: Forward Run Abort Signal to Foreground Tool Calls

Stopping a generation left in-flight tool calls running on the far side.
For MCP over streamable-http the external server kept burning CPU until
the tool finished or timed out, with no `notifications/cancelled` ever
sent.

The MCP layer was never the problem: `MCPManager.callTool` already
spreads `options.signal` into `client.request`, and the SDK's
`Protocol.request` sends `notifications/cancelled` the moment that signal
aborts. The signal simply never arrived.

Agent tools do not execute inside LangGraph's ToolNode — `eventDrivenMode`
dispatches `on_tool_execute` and `createToolExecuteHandler` invokes them.
The agents SDK puts the run's abort signal on the batch request
(`ToolExecuteBatchRequest.signal`, documented as one handlers should
forward), but the handler destructured every field except `signal` and
built its invoke config without it. `config.signal` was therefore
`undefined` in every foreground tool, so `createMCPTool` derived no
signal and the SDK registered no abort listener.

Forward it. This restores cancellation for all signal-aware foreground
tools, not just MCP. The detached background invoke keeps its own
controller, since that work deliberately outlives the turn.

An aborted call now rejects promptly and resolves an error result rather
than hanging, so the abort is logged at debug instead of as a tool error
— a user pressing Stop should not spray the error log.

* 🔇 fix: Keep Cancelled Tool Calls on the Filtered Path and Out of Error Logs

Addresses both findings from the Codex review of 48fded564a.

P1 — the cancellation branch returned before `filteredToolOutputResult`,
so with tool-output filtering configured an aborted call's error text
reached the turn uninspected. Worse, `runSignal.aborted` says the run is
over, not that this rejection was the cancellation: an unrelated failure
racing the Stop took the same unfiltered exit. Cancellation now only
selects the log level; filtering and the result shape are unchanged.

P2 — `createMCPTool` logs its own error before wrapping and rethrowing,
so every Stop during an MCP call still emitted an error-level MCP entry
and could pollute operational alerts. That catch now recognizes the abort
and logs at debug; the wrapped message still reaches the turn.

Both are covered by tests that fail against the previous commit.

* 🎯 fix: Require an Abort-Shaped Error and Spare Shared OAuth Flows

Addresses both findings from the Codex review of b3c67082cd.

An aborted run signal proves the turn is over, not that the rejection in
hand was the cancellation — a permission, OAuth, or upstream failure can
reject in the same tick a user presses Stop. Both quiet-log branches now
require the error to look like an abort as well, so a real failure racing
the Stop stays at error level and visible to operational alerts.
`isAbortError` moves to `@librechat/api` and the copy in
`abortMiddleware` is retired, keeping one implementation. Its spec pulls
the real function through its partial package mock rather than asserting
a stub.

Forwarding the run signal also reached ActionService, where two of the
three OAuth flows are keyed `userId:action_id` and so outlive the run
that opened them: a second run for the same action joins the very same
record, and the browser's OAuth callback reads its metadata to exchange
the code. `monitorFlow` deletes the key when a waiter's signal aborts, so
one Stop could strand a concurrent run and discard an authorization the
user had already granted. Those two flows no longer take the signal; the
run-scoped login flow, keyed by thread and run, still does.

Every guard is covered by a test that fails when the guard is removed.

* 🧷 fix: Detach the Stopped OAuth Waiter Instead of Dropping Its Signal

Addresses the Codex review of d53ff170ab.

Withholding the run signal from the shared Action OAuth flows protected
concurrent runs and the browser callback, but left this invocation
attached to the flow after the Stop. A callback landing late then resumed
`_call` straight into `preparedExecutor.execute` — a consequential API
request running after the user had already stopped the turn. Handing the
signal back is not the answer either, since `monitorFlow` deletes the
shared `userId:action_id` key on abort.

`detachOnAbort` separates the two: the caller stops waiting the moment
the signal aborts, while the shared flow runs on for whoever else needs
it — another run, or the callback exchanging its code. Late settlement of
the detached work is swallowed rather than surfacing as an unhandled
rejection.

Both shared flows now use it. The run-scoped login flow keeps the signal
directly, as nothing outside its run observes it.

* 🪪 fix: Keep an Action OAuth Abort an Abort

Addresses two of the three findings from the Codex review of 70fc0782b1.

Detaching the stopped waiter left the rejection to be misread on the way
out. The refresh catch treated it as a failed refresh and called
`requestLogin()`, emitting an OAuth prompt and opening pending
authorization state for a turn that had already ended. `requestLogin` and
the surrounding auth catch relabelled it `Failed to authenticate OAuth
tool` / `Authentication failed`, and the outer catch handed that to
`logAxiosError` — so an ordinary Stop produced two error-level entries
and returned failure text as the tool's result. Each boundary now lets an
abort through unchanged, and the outer catch logs it at debug and
rethrows so it stays a cancellation end to end.

Deferred: waiter-only cancellation in `FlowStateManager`, so a detached
`monitorFlow` stops polling instead of running out the flow's TTL. That
poller is bounded at three minutes and lives exactly as long as it does
for a waiter that never left, so it changes no lifetime this branch
introduced; giving `FlowStateManager` a non-destructive abort mode is its
own change, shared with MCP and indexSync.

* 🤫 fix: Classify the Abort at the MCPManager Boundary Too

Addresses the Codex review of 9bcf1aa57e.

`MCPManager.callTool` logs every rejection at error level before
rethrowing to `createMCPTool`, so a user Stop still emitted an MCP error
from the inner boundary even after the outer one learned to recognize it.
The same signal-plus-abort-shape classification now applies here.

The review also noted, correctly, that the existing test could not have
caught this: it replaces `getMCPManager` wholesale, so it only ever
exercised the outer logger. The new cases drive the real manager with a
connection whose `client.request` rejects the way the SDK does once a
request signal aborts, and cover both the cancellation and a genuine
failure racing the Stop.

* 🧹 chore: Restore Import Order in the Agents Tool Handler
2026-09-02 13:32:33 -04:00
Danny Avila
1c7a172321
🕹️ feat: Configure BYOM Tool Permissions (#15504)
* feat: add configurable BYOM permissions

* test: cover BYOM permission settings live

* fix: harden BYOM permission settings

* perf: reuse principals for environment discovery

* chore: normalize BYOM settings style

* fix: Align BYOM Discovery and Admission

* fix: Harden BYOM Permission Boundaries

* fix: Align BYOM Skill Approval Routing

* fix: Preserve Lazy BYOM Approval Capabilities

* perf: Parallelize Cached Environment Reads
2026-09-02 10:38:00 -04:00
Danny Avila
6372cb08ee
🧶 fix: Untangle Parallel Subagent Descriptor Paths (#15492)
* fix: isolate parallel subagent descriptor walks

* fix: preserve canonical subagent config identity

* fix: separate subagent graph assembly from path validation
2026-09-01 21:48:15 -04:00
Danny Avila
a3c2277c38
🚧 fix: Narrow Chat MCP Selections to What the Picker May Offer (#15478)
* 🚧 fix: Narrow Chat MCP Selections to What the Picker May Offer

The chat MCP picker offers a server only when the operator has not hidden it
(`chatMenu: false`) and the user reaches it directly rather than through an
agent (`consumeOnly`). Nothing enforced either condition on the request, so a
stale client, a replayed body, or a hand-written one could name any server and
get its tools — `consumeOnly` in particular is a permission the registry derives
per user, so ignoring it let a user reach in plain chat a server they had only
been granted through an agent.

Narrow the picker's selection in the two ephemeral loaders, against the same
predicate the client's `selectableServers` uses. The resolver is injected, so
`packages/api` stays free of the registry and the loaders keep their existing
`deps` shape.

Provenance is why this lives in the loaders rather than at the tool-resolution
chokepoint: only here is a server name known to have come from the picker.
Servers a model spec pins are the operator's own choice and are added after the
narrowing, so pinning a chat-hidden server to a spec keeps working.

`chatMenu` only ever comes from the config tier, so the overlay settles it with
no lookup at all. Lookups for the rest run concurrently and are cached per
server and user. A name the registry cannot resolve — request-tier, declared on
the body and never registered — is kept, as is one whose lookup fails: this
narrows an already-authenticated selection and is not the authorization
boundary.

* 📝 docs: Say What chatMenu Now Bounds

The schema still described `chatMenu` as dropdown visibility alone, which is
misleading now that it also bars a server from the chat selection a request
carries. Spell out both halves, and what it deliberately does not restrict:
agents, and servers a model spec pins.

* 🛡️ fix: Close Four Gaps in the Chat MCP Narrowing

Dedupe before resolving. The selection is request-supplied and the loaders used
to build a `Set` immediately; mapping the raw array first let one body repeat a
name enough times to launch a resolver — registry, cache, and ACL reads, with no
single-flight — per occurrence.

Resolve names through the tool-loading aliases. A configured `private server` is
addressable as `private_server` downstream, so an exact-key lookup let the
normalized spelling walk past a `chatMenu: false` check and still load tools.
Names are returned as sent; only the decision is canonicalized.

Let the request overlay settle `chatMenu`. The config tier is where the flag
lives and is what the picker itself was built from, so an overlay that re-enables
a server now outranks the durable config the registry returns, which was silently
dropping a valid selection. `consumeOnly` still comes from the registry.

Narrow the request body, not just the loader's copy. `applyContextToAgent` reads
`req.body.ephemeralAgent.mcp` directly and prefers it over the agent's tools, so
a hidden server's `serverInstructions` reached the model context even after its
tools were dropped.

* 🧭 fix: Ask the Registry Which MCP Servers the Picker May Offer

Three rounds of review found the same mistake in three disguises: this narrowing
re-derived the registry's tier precedence instead of asking for it. A config
entry was treated as authoritative over a user-DB or process-backed server of the
same name; the alias map was built from config names only, so a DB server named
`private_server` was misrouted to a config `private server`; and the overlay
short-circuit ran before any of that could be consulted.

Resolve the accessible set through `resolveAllMcpConfigs` instead — the same call
behind `GET /api/mcp/servers`, so what the request may use and what the picker
was offered come from one place and cannot drift. Precedence, cross-tier name
collisions, and the config overlay are the registry's job again, and the
selectability test is a single flag check over what it returns.

The result is smaller: no overlay branch, no per-server lookups, one catalog read
regardless of how long the selection is, and aliases built over the whole
accessible set so an exact name always outranks another server's normalized form.

Publish the servers actually in play back onto the request body, spec pins
included. `applyContextToAgent` prefers that list over the agent's tools, so
narrowing to the picker selection alone had started dropping a spec-pinned
server's `serverInstructions` while suppressing a hidden one's.
2026-09-01 18:47:36 -04:00
Danny Avila
51edb2a660
🛫 feat: Enable Self-Service Code Worker Pairing (#15367)
* feat: add self-service code worker pairing

* fix: enforce code worker principal boundaries

* fix: separate pairing control planes from execution

* fix: preserve principal worker routing

* fix: pin artifact traffic to code workers

* fix: authenticate code worker selection

* test: mock worker-aware artifact headers

* fix: harden self-service code worker routing

* fix: fail closed for principal code pairing

* style: format code execution headers

* fix: close self-service pairing gaps

* fix: satisfy code environment type checks
2026-09-01 18:46:33 -04:00
Oliver Faust
5e49868f0a
🔑 fix: Decode Action OAuth Credentials After Decryption (#14698)
* 🔑 fix: Decode Action OAuth Credentials After Decryption

Action client credentials are URL-encoded before encryption, but the OAuth
token exchange decrypted them with `decryptV2` alone, sending values like
`abc%40domain.com` to the provider and causing 401s for secrets containing
`@`, `+`, `=`, `/` or `:`. Decoding falls back to the raw decrypted value so
legacy secrets stored before 299cabd6e (which contain an unescaped `%`) still work.

Fixes #14636

* 🔑 fix: Share Action Credential Codec Between Read Paths

The encode-before-encrypt convention had two readers with different
behaviour. `ActionService.decryptSensitiveValue` decoded unconditionally,
so a credential stored before encoding was introduced (299cabd6e, March
2025) containing a stray `%` threw `URIError` and failed every read of the
action, not just the token exchange.

Extract the pair into `packages/api/src/actions/crypto.ts` as the single
implementation and consume it from both `ActionService` and the OAuth token
exchange, so the two paths cannot drift again.

Tests cover the codec against real crypto: reserved characters and literal
percent escapes round-trip, pre-encoding values are returned unchanged, and
a pre-encoding value with a stray `%` no longer throws.

A version marker on newly encrypted values was prototyped and dropped: it
changes the stored format for every action credential while fixing nothing,
since values written by the encoding convention already decode correctly
and pre-encoding values stay unmarked either way.

---------

Co-authored-by: Danny Avila <danny@librechat.ai>
2026-09-01 18:42:28 -04:00
Danny Avila
aa7539909b
🪶 feat: Enable Standalone Skill Authoring (#15480)
* feat: enable standalone skill authoring

* test: align skill e2e flow with enable toggle

* fix: preserve legacy skill state on version restore
2026-09-01 18:39:05 -04:00
Danny Avila
dccd7ae496
🧶 fix: Preserve Multi-Agent Tool Call History (#15468)
* 🧭 fix: Preserve Multi-Agent Tool History

* 🧰 fix: Preserve Lazy Subagent Tool History

* 🧪 test: Enable Lazy Code History Fixture

* 🧭 fix: Derive Effective Lazy Tool History

* 🧪 fix: Tolerate Empty MCP Name Audits

* 🧪 test: Mock Lazy MCP Name Audit

* 🧭 fix: Expand Lazy Historical Tool Names

* 🧱 fix: Derive Durable Wildcard History

* 🧬 fix: Traverse Nested Wildcard History

* 🔭 fix: Resolve Wildcard Server Boundaries

* 🔐 fix: Persist MCP Call Identity

* 🪪 fix: Stamp Resolved MCP Execution Identity

* 🕸️ fix: Resolve Graph Member MCP Identity

* 🧭 fix: Fall Back From Empty Graph Member ID

* 🧭 fix: Preserve Aggregated MCP Identity

* 🧭 fix: Harden MCP Identity Resolution

* 🧭 test: Assert Concurrent Graph Limit Invariant

* 🧭 fix: Centralize Lazy History Policy

* 📦 chore: Bump `@librechat/agents` to v3.7.13

* 🧪 test: Align Content Filter Fixture With SDK History
2026-09-01 18:37:45 -04:00
Danny Avila
c8939c9730
🪄 fix: Reuse Downloaded Artifacts for Image Reads (#15454) 2026-09-01 10:55:53 -04:00
Danny Avila
8f6228095f
🖼️ fix: Stop Reporting a Failed Sandbox Image Read as an Unreadable Format (#15453)
* 🖼️ fix: Stop Reporting a Failed Sandbox Image Read as an Unreadable Format

`read_file` on a `/mnt/data` image collapsed every failure — rate limit,
missing path, truncated transfer, transport error — into the binary-file
hint, whose image branch reads as a permanent capability limit ("is an
image file and cannot be read as text"). The model stopped retrying, and
the operator had no way to tell which failure had actually occurred.

The failure that surfaced it: the reader windows the bytes through
`/exec` stdout, one call per window, against the Code API's per-user
execution limiter (20 requests / 30s in the reference deployment). At a
fixed 32KB window a 122KB chart cost 4 calls and a 1MB image cost 33 —
more than a whole limiter window, so anything over ~640KB could never
complete. A turn that generates several charts and reads them back
exhausts the budget partway through and reports the 429s as unreadable
images.

- `handlers.ts`: failed reads name the real cause and the affordance that
  matches it — rate-limited waits and retries, a missing path lists the
  directory, a truncated transfer retries. The "cannot be read as text"
  phrasing is now reserved for bytes that are not a supported image. An
  image past the inline budget says to downscale and read the smaller
  copy rather than pointing at `bash_tool`, which cannot show an image.
- `process.js`: the window is derived from the runner's stdout budget
  (48,960B vs 32,768B, so a 122KB chart is 3 calls and 1MB is 22), halves
  and re-reads the same offset when a runner truncates anyway (remembered
  per Code API, with the env remedy logged), waits out a rate limit it
  can afford instead of discarding the bytes already pulled, and stops at
  a 24-call ceiling so no read stalls a turn across limiter windows.
- `utils/code.ts`: shared `getCodeApiRetryAfterMs` (header, then the
  `retry_after_seconds` body); `skillFiles.ts` drops its private copy.

* ♻️ refactor: Move the Sandbox Image Reader Into TypeScript

Addresses the review round on #15453.

- P1: windowing, window sizing, the in-sandbox reader script, response
  parsing and byte assembly move to `packages/api/src/files/code/image.ts`,
  and the Code API rate-limit policy to `packages/api/src/utils/code.ts`.
  `process.js` keeps only the `/exec` transport it owns. Both new modules
  are tested against their real implementations (19 + 13 cases), including
  the round-trip ceiling, the changed-file guard and the shell-injection
  guard on the reader script.
- P2: a configured stdout budget below the old 8KB window floor produced a
  window the runner could never emit, and narrowing was pinned to the same
  floor, so no retry could succeed. The window now aligns to the base64
  group size instead, and the round-trip ceiling bounds what a small budget
  costs.
- P2: `.env.example` documented a 32,768-byte default that no longer holds
  and never mentioned the stdout budget. It now describes
  `LIBRECHAT_CODE_SANDBOX_OUTPUT_MAX_SIZE` as the setting to tune, with the
  chunk override as the escape hatch.
- P3: `process.spec.js` no longer reimplements the retry parser in its
  module mock. Behaviour is tested where it lives; the mock is a declared
  passthrough and the spec covers what the transport still owns — session
  forwarding, the profile header, parser hand-off and error logging.
- P3: `getCodeApiRetryAfterMs` reads the response body through `in`
  narrowing rather than an `as` assertion.
- P3: the window-sizing JSDoc no longer claims a multiple of 3 in the one
  case that is not — an explicit `LIBRECHAT_CODE_IMAGE_CHUNK_BYTES`.

* 🎯 fix: Size Sandbox Image Reads to What the Limiter Can Deliver

Addresses review round 2 on #15453.

- Narrowing now halves the caller's own failing window instead of the
  shared learned value, and the learned value only moves down to the
  narrowest size any read needed. Reads run concurrently (one per tool
  call), so two reads failing at the same size were compounding into a
  window two steps smaller than the runner would have accepted, and
  persisting it for every later read.
- Narrowing continues until a runner accepts a window or a floor below
  which no runner could serve an image at all. Two halvings stopped at
  12,240 bytes — still ~16KB of base64 — so an 8-10KB stdout cap that was
  not configured up front stayed unreachable.
- The round-trip ceiling is now one limiter window (20), and a read that
  cannot finish within it says so from the FIRST response rather than
  spending the whole budget rediscovering it: the first window reveals
  both the file size and what a call really delivers. A near-limit image
  no longer drains the turn's executions before failing, which is what
  made the wait budget look too small.
- The round-trip message names the size this deployment can actually
  inline, so the model has a downscale target instead of a guess.
- `python3: not found` from the sandbox reader was matching the generic
  "not found" in `isSandboxMissingFileError` and being reported as a
  missing image path, sending the model to `ls /mnt/data` while hiding a
  runner dependency. Image reads now classify only path-specific ENOENT
  forms as a missing file.

* 📐 fix: Size a Truncated Read's Retry From the Cap It Revealed

Addresses review round 3 on #15453.

A ~1KB sandbox stdout cap is a real runner default, and the 1,536-byte
narrowing floor sat above it: discovery stopped one step short and
declared every image unreadable, even though small ones fit comfortably
in the 576-byte window the configured path already derives.

Narrowing now runs until no smaller window exists. It also no longer has
to grope its way down: a truncated response emitted exactly as much as
the runner allows, so its length measures the cap this deployment never
declared, and the retry is derived from it directly — one round-trip
instead of the eight blind halvings it takes to fall from ~49KB to ~1KB.
Blind halving remains the fallback and bounds the result either way, so
every retry is strictly smaller than the window that just failed.
2026-09-01 09:08:01 -04:00
Danny Avila
224512851a
🗂️ fix: Resolve Code Interpreter Destination Collisions (#15449)
* 🗂️ fix: Resolve Code Interpreter Destination Collisions

Codeapi mounts each `/exec` input at a destination derived from its `name`
and rejects the whole request when two entries land on one. LibreChat never
enforced that: `primeFiles` sent `name: file.filename` verbatim, and the
graph seed deduped by `(storage_session_id, id)` — identity, not destination.

Two conversation files sharing a filename therefore killed code execution for
the rest of the conversation. The rejected request never reaches the sandbox,
so no result comes back to collapse the pair, and every later turn re-primes
both and fails identically. Only code-generated outputs are covered by the
`(filename, conversationId, context, tenantId)` partial unique index; uploads
carry `context: message_attachment`, so one conversation can hold several
records sharing a filename — two uploads of `image.png`, or an upload whose
name a later execution wrote back in place.

`packages/api/src/files/code/destinations.ts` now owns the name → destination
mapping for every contributor to an `/exec` file list, mirroring codeapi's
conflict rule including directory-prefix conflicts:

- `primeFiles` claims per pushed file, disambiguating with a `-2`, `-3`
  counter and echoing the resolved path into the tool context, so the model
  is told where each file actually mounts. Claim order comes from immutable
  `createdAt`, not `getFiles`'s `updatedAt` sort, which usage accounting and
  re-upload both bump — order-dependent destinations would silently repoint
  a path an earlier turn had already handed the model. Newest wins the bare
  name, matching `ToolNode.updateCodeSession` and giving an in-place rewrite
  precedence over the original it superseded.
- `seedCodeFilesIntoSessions` drops a later file whose destination is already
  claimed. Renaming there would invent a path nothing told the model about,
  and a conflict at that layer means one logical file arrived twice under
  different storage pointers.

Fixes #15443

* 🧹 chore: Tolerate Holes in the Destination Priority Sort

`primeFiles` sorts the raw `getFiles` result before its own per-entry guard
runs, so the comparator has to survive a null row rather than throw ahead of
the loop that was already defending against one.

Also tightens the tool-context assertion in the upload-vs-output case, which
was passing on a trailing space rather than on the path.

* 🔁 fix: Address Codex Review on Destination Assignment

Four findings from the review of `b0f61d0`.

**Identity-derived suffixes instead of a collision counter.** A counter is
assigned from whatever is in the set, so a third file arriving under the
literal name a displaced file had been given pushed that file along, and code
the model wrote in an earlier turn would silently start reading the newcomer.
The fallback now hashes the file's own `file_id`, so a displaced file keeps
its destination for the life of the conversation and only the winner of the
bare name can change. A trailing counter still guards a hash collision so the
search terminates on any input.

**Rank by last content write, not record creation.** `processCodeOutput`
claims one row per `(filename, conversationId)` and rewrites it in place, so
a repeatedly written output keeps its original `createdAt` while recording the
latest writer in `metadata.sourceDispatchedAt`. Ranking on `createdAt` alone
handed the bare path to an upload the output had since been rewritten over.
Recency is now `max(sourceDispatchedAt, createdAt)` — still never `updatedAt`,
which usage accounting bumps without any content changing.

**Advertise a displaced generated output.** Generated files are left out of
the tool context because the model already knows what it wrote — which stops
being true once a newer same-named file takes the bare path and the output
mounts somewhere the model has never seen. Displaced outputs are now listed
with the name they were written as, and displaced uploads name their original
too.

**Rank conversation files above an agent's private ones.** Each agent claims
destinations over its own candidate set — the conversation's files plus its
own — so a private file taking a bare name from a shared file in one agent but
not in another left two agents advertising different paths for the same file
into one shared mount namespace. Shared files now rank first, so the majority
that every agent sees resolves identically. The private-versus-private case
still drops at the merge and is documented there; closing it needs one
assignment across contributors, made before any agent renders its context.

* 📌 test: Pin Alias Ownership on an In-Place Rewrite

Codex round 2 flagged that the identity alias still falls back to a counter
when the alias itself is literally claimed, so a displaced file can move after
all. The mechanism is real and my JSDoc overstated the guarantee, which this
corrects.

The behaviour stays as it is. The realistic way a file arrives under another
file's alias is the model rewriting the displaced file in place: it was told
`<stem>-<hash>.ext`, wrote back to it, and `processCodeOutput` registered an
output under that literal name. Keeping the alias with the newest holder is
what makes the model's familiar path resolve to its own edit; reserving it
against the newcomer would hand that path back to the bytes it replaced. The
test pins that ordering so a later change cannot invert it silently.
2026-09-01 00:55:54 -04:00
Danny Avila
49e1e32f3a
🧺 fix: Funnel MCP Catalog Work Through a Shared Gate (#15429)
* 🧯 fix: Bound MCP Catalog Work Across Requests

* 🛑 fix: Reject Saturated MCP Discovery

* fix: fairly bound MCP catalog work

* test: type catalog snapshot mock arguments

* test: assert snapshot deadline forwarding

* fix: harden MCP catalog scheduling
2026-08-31 14:13:31 -04:00
Danny Avila
b7ae67307e
🕰️ fix: Anchor Temporal Variables to Turn Start (#15419) 2026-08-31 10:38:10 -04:00
Danny Avila
413906abc3
🖍️ fix: Honor Agent Image Detail Settings (#15407)
* 🖼️ fix: Apply an Agent's Configured Image Detail

The Agent Builder exposes an Image Detail slider and saves it to
`model_parameters.imageDetail`, but nothing ever read it back: `encodeAndFormat`
resolves the level from `req.body.imageDetail`, which the agents route never
populates, so every image was encoded as `detail: "auto"`. Providers that reject
`auto` — MiniMax's OpenAI-compatible API among them — fail every image upload
through an agent, and the setting that would fix it has no effect.

The root cause is a classification error rather than a missing argument.
`extractLibreChatParams` splits LibreChat's own settings out of an agent's model
parameters, and its key set is derived from the `librechat` group in
`parameterSettings`. `imageDetail` sat in `baseDefinitions` instead, so it was
neither extracted for LibreChat's use nor stripped from the options handed to the
provider.

It is now grouped with `resendFiles` and the other LibreChat-level parameters,
which gives it the same path those already take: extracted during agent
initialization, carried on the initialized agent, passed to the client, and read
by `encodeAndFormat`. `AgentClient.getSaveOptions` already expected
`options.imageDetail` — nothing had ever populated it.

The request body still wins where it is set, so the classic endpoints keep
resolving detail from conversation settings exactly as before.

Fixes #15359

* 🔤 fix: Type Image Detail as Its Enum, Not a Bare String

`TConversation.imageDetail` is the `ImageDetail` enum, so the extractor's return
type and the initialized agent's field are now declared as that enum rather than
widened to `string`, and the tests pass enum members instead of raw literals.

Caught by CI's type check, which I had run before adding the tests and not after —
jest compiles the specs through babel, so the suite stayed green over a type error.
2026-08-31 08:34:05 -04:00
Danny Avila
c7f0a8f247
📬 feat: Move Agent Queued Turns Server-Side (#15370)
* feat: move agent queued turns server-side

* test: update queued turn composition coverage

* fix: harden queued-turn lifecycle ownership

* fix: centralize queued-turn lifecycle ownership

* fix: close queued-turn lifecycle gaps

* fix: unify queued turn lifecycle transitions

* fix: fence queued-turn deletion admission

* fix: preserve queued-turn lifecycle ownership

* fix: close queued-turn reconciliation races

* fix: reconcile quarantined queued-turn admissions

* fix: annotate admission evidence default

* fix: deepen queued turn lifecycle admission

* fix: fence queued turn provider admission
2026-08-30 21:53:58 -04:00
Danny Avila
fcae1025c0
🧳 feat: Register Principal-Owned Code Environments (#15365)
* feat: add principal-owned code environments

* fix: address code environment CI coverage

* fix: expose principal code environments in endpoint config

* fix: reject missing code environment bodies

* fix: harden code environment lifecycle

* fix: revalidate principal code environments

* fix: synchronize code environment authorization

* fix: bind code environments to current principals

* fix: fail closed on code ACL cache errors

* fix: prevent code environment override shadowing

* fix: preserve principal environment defaults

* fix: suppress revoked code environment aliases

* fix: fail closed on environment augmentation

* fix: narrow code environment defaults

* fix: isolate code environment fallback

* style: sort code config imports
2026-08-30 19:33:19 -04:00
Danny Avila
30124f21b2
🎻 refactor: Orchestrate Agent Runs Through a Request-Free Host (#15366)
* refactor: decouple agent initialization from HTTP

* refactor: centralize remote agent execution lifecycle

* fix: preserve pre-settlement error rendering

* fix: preserve request-backed tool loading

* style: sort agent execution imports

* fix: adapt public agent tool loaders
2026-08-30 15:38:57 -04:00
Danny Avila
c1cb591d49
🗿 feat: Add Attached Stateful Code Environments (#15352)
* feat: add attached stateful code environments

* fix: include code environment in lazy agent type

* fix: harden stateful environment routing

* fix: complete code environment route isolation

* fix: declare code environment map type

* fix: preserve configured code execution routes

* fix: harden stateful environment updates

* test: assert route-scoped sandbox readiness

* fix: harden stateful environment lifecycle

* fix: isolate migrated code sessions

* test: assert route-qualified code sessions
2026-08-30 15:38:45 -04:00
Danny Avila
2ae6c8aea9
🛎️ feat: Wake Agents on Background Tool Completion (#15350)
* feat: wake agents for background tool completion

* fix: isolate background completion contracts

* fix: anchor background completion identity

* fix: close background completion delivery gaps

* fix: preserve manual background polling

* fix: preserve legacy tool group identity

* fix: close background wakeup identity gaps

* test: type background wakeup enqueue mock

* fix: preserve background completion identity

* test: type activity phase fixture

* test: mock phase media query

* fix: arbitrate background result ownership

* fix: retain tool step routing helper

* test: expand phase groups before identity checks

* fix: preserve background completion ownership

* fix: bound durable background results

* fix: type wakeup input budget export

* chore: sort background handler imports

* fix: persist timed-out background completions

* fix: reconcile background completion ownership

* fix: type background completion capabilities

* fix: harden background completion terminalization

* test: type missing completion evidence

* fix: require evidence for completion retirement

* chore: satisfy background completion static checks

* test: cover automatic background completion wakeups

* test: assert background wakeup agent identity

* fix: wake capability-fenced trigger deliveries

* test: keep capability shield fixture public

* test: assert capability worker wakeup

* fix: close background completion ownership gaps

* test: satisfy completion lease static checks

* fix: preserve artifact completion wakeups

* fix: close background delivery recovery gaps

* fix: simplify background receipt guidance

* fix: recover dead background completion batches

* fix: fence background completion recovery

* fix: recheck background recovery ownership

* fix: fence unpublished background continuations

* test: await background message hydration
2026-08-30 08:56:41 -04:00
Dustin Healy
8fcab7e44f
🔄 fix: Recover Missing MCP Marketplace Catalogs (#15323)
* fix: recover missing MCP marketplace catalogs

* fix: make MCP catalog recovery passive

* test: type MCP catalog recovery fixtures

* fix: bound and back off passive MCP catalog recovery

Passive recovery runs inline on `GET /api/mcp/tools` and its results are
request-local by design, so every list request re-dialed the same cold
servers with the default connection timeout. Three limits keep that cost
proportional to what recovery can actually recover:

- Cap the discovery timeout at 5s instead of inheriting the connection
  default (`initTimeout ?? 30s`); a server configured to connect faster
  keeps its own shorter limit.
- Skip a server the config tier already marked `inspectionFailed`, leaving
  it to that tier's retry window rather than re-dialing it per request.
- Skip a server whose declared `customUserVars` are unset, matching the
  gate `reinitMCPServer` applies for issue #10969 — connecting without them
  fails auth, so the attempt is spent for nothing.

Servers that still fail discovery enter a one-minute per-process cooldown,
which is what stops an unreachable server from being re-dialed by every
subsequent list request. A server that recovers clears its own entry, and
expired entries are swept at most once per window so the map stays bounded.

Skipped servers render exactly as they did before recovery existed: present
in the catalog with an empty tool list.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Xr1Dabvdn1mzzyYgpJgU5B

* fix: bound passive MCP recovery by deadline, key cooldowns by config

Both follow-ups address the same mistake: recovery expressed its own
request-level constraints in terms borrowed from other layers.

`connectionTimeout` bounds one connection attempt, and
`MCPConnectionFactory.discoverToolsInternal` spends it twice — once on the
authenticated connection, then again in `attemptUnauthenticatedToolListing`
— so capping it bounded no total this layer could reason about. Recovery now
enforces its own wall-clock deadline per server with `withTimeout`, which
holds however many attempts the factory makes; `connectionTimeout` is left to
do only its own job, still honouring a shorter operator `initTimeout`. An
attempt abandoned by the deadline disposes its own connection when it
settles, and `Promise.race` keeps a handler on it, so a late rejection is
not unhandled.

A per-request budget now caps total recovery regardless of server count.
A server is dialed only if the remaining budget can fund a full deadline;
never dialing one is not evidence against it, so a skipped server records no
cooldown and a later request reaches it once those ahead are cached or
cooling down.

Cooldown identity now includes the publication generation — the same
effective-config identity the tool caches fence on — instead of just user and
server name. Correcting a server's URL or transport keys a new entry, so the
refetch the client issues on update is no longer skipped for up to a minute
by the previous configuration's failure.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Xr1Dabvdn1mzzyYgpJgU5B

* refactor: keep passive MCP recovery stateless and bounded by its own work

Reverts the cooldown, request budget and deadline race added in 257d5cf and
fc3e3c9, and keeps only the three stateless limits.

The tool cache refuses unfenced writes (`tools.ts`), and a discovery
connection owns no publication generation and is disposed, so a recovered
catalog cannot be retained by design. Those commits responded by building a
cache-shaped memory in front of it — per-process failure state, a scheduling
budget, an identity, an eviction sweep — and each round of review found
another way that hand-rolled cache differed from a real one: wrong identity
for configuration, wrong identity for credentials, no fairness across
requests, and a limiter slot released while its network operation was still
running. None of that machinery was asked for; all of it was compensation for
a result the architecture does not allow keeping.

Recovery is now stateless. It skips only what configuration alone proves
pointless — a server the config tier already marked `inspectionFailed`, and
one whose declared `customUserVars` are unset — and bounds the work itself
rather than racing it, so a limiter slot is held for exactly as long as its
network operation runs and the concurrency limit of three is real.

The attempt timeout is not a compromise: recovery exists for a server that is
reachable and authorized but whose catalog cache expired, and such a server
answers tools/list well inside 1.5s. Anything slower cannot be rescued here,
so failing fast costs nothing. The factory spends that value per attempt, so
a server's ceiling is it times the attempts made; the constant documents that
rather than hiding it behind a number tuned to today's attempt count.

Consequences that were bugs are now gone by construction: every cold server
is attempted on every request, so none is starved by those ahead of it, and
correcting a server's configuration or credentials takes effect on the next
refetch instead of waiting out a stale cooldown.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Xr1Dabvdn1mzzyYgpJgU5B

* fix: correct the inspection-failure skip and bound catalog fan-out

Three fixes that belong to this layer; a fourth issue does not, and is
described below.

The `inspectionFailed` skip was too broad. `MCPServersInitializer` stores a
YAML server that was unreachable at startup via `addServerStub`, which stamps
`source: 'yaml'`, and only config-tier entries get the timed retry in
`ensureSingleConfigServer`. Skipping every failed stub therefore hid a
recoverable server from the marketplace permanently — the exact state this
recovery exists to escape. It now defers only `source === 'config'`, matching
what `reinitMCPServer` already does.

Plugin auth is read only when some cold server actually declares
`customUserVars`, and only for those servers. The common unauthenticated case
no longer pays a MongoDB round trip whose result nothing can consume.

Snapshot refreshes are now bounded by the same limiter as discovery. They are
not local reads: both connection paths reach `fetchOrderedToolsSnapshot` and
issue a real `tools/list`, so a cache reset across many servers previously
burst unbounded outbound requests while discovery was capped at three.

Not fixed here, because it cannot be: `connectionTimeout` does not bound
discovery. It covers `connection.connect()` only, and `fetchToolsSnapshot`
then applies its own `TOOLS_LIST_TIMEOUT_MS` (30s) to `tools/list`, so a
server that connects fast and stalls while listing still holds its slot for
that window. The factory also does not cancel a timed-out connect before
starting the unauthenticated fallback. Bounding this end to end needs a
deadline threaded through `MCPConnectionFactory` into both `connect()` and
`fetchToolsSnapshot()`, which is a change to shared connection machinery
rather than to this caller. The constant's comment now states what it does
and does not bound instead of implying an end-to-end guarantee.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Xr1Dabvdn1mzzyYgpJgU5B

* fix: thread live-session OBO context into passive catalog discovery

The merge of #15334 sources OBO tokens from the live OpenID session via
request-boundary closures. Passive catalog recovery is a discovery call
site too; without these options an OBO server whose stored token went
stale fails recovery — the exact cold-catalog class this PR fixes.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Xr1Dabvdn1mzzyYgpJgU5B

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-08-30 06:55:30 -04:00
Danny Avila
16c2bb4149
📬 feat: Establish Background Continuation Admission (#15348)
* feat: establish background continuation admission

* fix: preserve routed subagent wakeup controls

* fix: probe configured subagent task store
2026-08-30 06:51:36 -04:00
Danny Avila
fa913148fb
🔒 fix: Refresh MCP OBO Tokens From the Live OpenID Session (#15334)
* 🧊 fix: Inline-refresh OpenID session tokens at MCP OBO call time

Resolves the walk-away failure mode where MCP tool calls using OBO auth
fail with "No valid OpenID access token is available for OBO exchange"
after a user idles past their access-token lifetime. The strategy-time
snapshot on `user.federatedTokens` could expire mid-stream before
`resolveOboToken` ran, while `req.session.openidTokens` carried a still-
valid (or refreshable) token that nothing read.

- New OpenIDSessionRefresh service: per-user single-flighted closure that
  reads `req.session.openidTokens` at OBO time and inline-refreshes via
  `openid-client.refreshTokenGrant` when expired (30s skew), persisting
  via `req.session.save()`. No cookie writes (headers already flushed).
- `resolveOboToken` gains a required UpstreamTokenProvider parameter
  (typed as `() => Promise<OIDCTokens | null>`, reusing the shared shape
  from @librechat/data-schemas). Compile-time guarantee that every call
  site is updated.
- New `session_refresh_failed` OboTokenResolutionReason distinguishes
  "session expired and IdP rejected refresh" from "no upstream token
  ever existed."
- `req` threaded through createMCPTool/createMCPTools/createToolInstance
  to construct the closure with captured request, plus fail-closed
  guards in MCPConnectionFactory.getOboTokens and MCPManager.callTool
  when the closure isn't plumbed.
- Startup warning in MCPServersInitializer when OBO is configured but
  OPENID_REUSE_TOKENS is unset (the strategy populating
  user.federatedTokens is only registered under reuse, so OBO would
  fail every call without it).

Tests: 16 new in OpenIDSessionRefresh.spec.js; obo.spec.ts extended
for the new param + error reason; wiring smoke tests in MCPManager,
MCPConnectionFactory, MCPServersInitializer, and MCP.spec.js.

* 🛡️ fix: Harden OBO inline-refresh against token type and session edge cases

- Token-preference asymmetry: live-token reuse and expires_at derivation
  now strictly gate on the access_token, not the id_token. Added a
  required `tokenPreference` parameter on isLiveSessionTokenStillValid,
  buildOIDCTokensFromSession, and createOpenIDSessionTokenProvider
  so every call site is explicit. Dropped the bogus id_token-exp
  fallback in performIdpRefresh — id_token TTL is governed by IdP
  session policy and would mark a short-lived access_token reusable
  past its real lifetime.
- Missing req in /reinitialize route: the manual reconnect
  endpoint now forwards req into reinitMCPServer, so OBO servers can
  build a session-aware upstream-token closure instead of failing with
  missing_upstream_token.
- Single-flight key collisions: composed key as
  tenantId:openidIssuer:openidId:sessionId via getSingleFlightKey.
  Concurrent calls in the same session still coalesce; separate sessions
  never share an in-flight refresh, preventing refresh-token rotation
  from breaking sibling sessions and preventing cross-tenant token
  crossover when distinct users share an IdP sub.
- Opaque access token reuse): persist accessTokenExpiresAt
  (unix seconds, from tokenset.expires_in) on each refresh AND on initial
  login / SPA refresh in setOpenIDAuthTokens. New getAccessTokenExp
  helper falls back to it when the access token isn't a JWT, avoiding
  redundant inline refreshes for Microsoft Graph and Auth0 default
  audiences.
- Log hygiene: the single-flight key (containing sessionId,
  openidId, openidIssuer, tenantId) is now SHA-256-hashed in the
  "Joining in-flight refresh" debug log. Preserves cross-line correlation
  via a 12-char prefix without leaking credential or PII material.

Documented req.session.openidTokens shape contract via JSDoc typedef so
the new accessTokenExpiresAt field has a discoverable home alongside the
existing accessToken/idToken/refreshToken/expiresAt/lastRefreshedAt.

Tests: OpenIDSessionRefresh.spec.js up to 30 passing (added coverage for
opaque-token reuse, JWT-access-token-exp fallback, no-id_token-fallback
regression, cross-session no-coalesce, persistence on refresh, and a
guard against stale accessTokenExpiresAt carryover). AuthService.spec.js
adds two cases covering accessTokenExpiresAt persistence on login.
mcp.spec.js (route) gains a regression test asserting req flows into
reinitMCPServer.

* 🔍 fix: Detect OBO-only MCP admin config overrides

Admin Config overlays for YAML-defined MCP servers compare only
ADMIN_CONFIGURABLE_FIELDS to decide whether to lazy-init a config-tier override.
The OBO config field was added after that fingerprint list, so an override that
only added or changed `obo` was treated as unchanged YAML and skipped.

Include `obo` in the admin-configurable field list and add a regression test for
an OBO-only override.

* 🔊 fix: Mock MCP OAuth timeout in SDK integration test

MCPConnectionFactory.attemptToConnect reads mcpConfig.OAUTH_HANDLING_TIMEOUT
when building the OAuth connection timeout. The SDK OAuth integration test
mocked mcpConfig without that field, which made the timeout calculation produce
NaN and caused the test to fail before the OAuth refresh/start path completed.

Add OAUTH_HANDLING_TIMEOUT to the test mock.

* ♻️ refactor: Pass OBO upstream-token closure into MCP instead of req

Build the OpenID upstream-token provider at the request boundary and thread
only the closure through MCP handling, so the MCP service layer no longer
receives the raw Express request. The closure still reads/refreshes the live
session at tool-call time, preserving the walk-away recovery.

- Drop `req`/`capturedReq` from createMCPTools, createMCPTool, reconnectServer,
  createToolInstance, and reinitMCPServer; forward `upstreamTokenProvider`
  instead. Closure is constructed in loadTools, loadToolDefinitionsWrapper, and
  the reinitialize route, where req/res are in scope.
- OBO: fall back to user.federatedTokens when the provider yields no live
  session, so OIDC remote-agent calls (verified bearer, no session) still work.
- Inline refresh: mirror a rotated refresh token to the refreshToken cookie via
  a shared setRefreshTokenCookie helper, guarded by !res.headersSent (no-op on
  the streaming path; session copy stays authoritative).
- Single-flight: hydrate a joining request's own session from the resolved
  tokens so a later OBO call doesn't replay a rotated-away refresh token.

Addresses owner feedback and three review findings.

* 🔒 fix: Recover OIDC refresh-token rotation after SSE OBO refresh

When an inline OBO refresh rotates the OpenID refresh token after SSE headers
have already been sent, the browser refreshToken cookie cannot be updated. Store
a short-lived encrypted bridge from the stale cookie token to the rotated token
so /api/auth/refresh can recover after express-session loss.

Use the signed openid_user_id cookie to load user context for bridge validation,
retry only on invalid_grant, and delete the bridge only after the bridged refresh
succeeds.

* 🔨 fix: hydrate joined OIDC refresh sessions with stable refresh tokens

Update single-flight OIDC refresh joiners whenever refreshed access token
state changes, even if the IdP keeps the refresh token unchanged.

This prevents joined requests from retaining stale accessToken or
accessTokenExpiresAt values and redundantly refreshing later in the same run.

* 🌉 Persist OIDC refresh-token recovery bridges in MongoDB

Store SSE OBO refresh-token recovery bridges in MongoDB instead of
process-local memory so /api/auth/refresh can recover after worker
restarts or cross-worker routing.

Derive bridge expiry from REFRESH_TOKEN_EXPIRY so the recovery window
matches the stale refreshToken cookie it repairs, and delete bridges
after successful recovery.

* 🤝 Coordinate OIDC inline refreshes across workers

Add a short-lived Mongo-backed refresh-flight record so concurrent
OBO refreshes for the same OpenID session do not redeem the same
rotating refresh token on different workers.

The winning worker performs the IdP refresh and stores an encrypted
result; joiners wait for that result, hydrate their request session,
and return without calling the IdP.

* ⚓ Keep OpenID marker cookies aligned on inline refresh

Refresh token_provider and openid_user_id with the same expiry as the
rotated refreshToken cookie when an inline OBO refresh can still write
headers.

Share the marker-cookie writer with the normal OpenID auth refresh path
so the fallback /api/auth/refresh branch continues to recognize valid
OpenID refresh tokens after session expiry.

* 🔑 fix: include refresh token in OIDC local refresh flight key

Key the process-local OIDC refresh coalescing by the current session
refresh token, matching the Mongo-backed flight key. This prevents a
request with a newly rotated token from joining an older pending refresh
and inheriting its failure/result.

* 🌉 fix: store OIDC refresh bridge without cookie response

Treat missing or non-cookie responses like headers-sent streaming
responses during inline OIDC refresh. When the IdP rotates the refresh
token and cookies cannot be written, persist a recovery bridge so a later
/auth/refresh can recover after session expiry.

* 🫙 fix: preserve stale OIDC cookie bridge key

Track the refresh token last written to the browser cookie separately
from the current session refresh token. When inline OIDC refreshes rotate
tokens without a writable response, keep bridging from the browser-stale
token directly to the latest session token.

* 🙌 fix: keep OIDC bridge recovery success on cleanup failure

Make refresh-token bridge cleanup best-effort after a bridged OIDC
refresh succeeds. A transient delete failure now logs a warning but does
not convert the already-refreshed session and cookies into a 403 response.

* 📦 test: Exclude RefreshTokenBridge from tenant-isolation coverage

Add RefreshTokenBridge to the tenant-isolation coverage allowlist because
refresh bridge lookups run during unauthenticated OpenID refresh recovery.
The controller first recovers user context from the signed OpenID marker
cookie, then the bridge methods apply explicit user and tenant filters.

Ambient tenant isolation would bind this recovery path to request-local
tenant context that is not available at the point the stale cookie is being
resolved

* ⚡ Fix OpenID refresh flight retry and marker hydration

Allow failed OpenID refresh flights to be reclaimed immediately instead of pinning transient errors.

Preserve the browser refresh-token marker when joined refreshes hydrate session tokens from a shared flight result.

Stabilize AuthService tests by isolating mocked module imports from prior suites.

* 🛠️ fix: centralize OBO identity scoping

Add shared auth identity helpers for app user ids, OpenID subjects,
tenant ids, and normalized OpenID issuers.

Thread a non-placeholder-visible OBO identity context from the real
request user through MCP connection, tool-call, reinit, and refresh
paths. Keep tenantId and openidIssuer out of createSafeUser so MCP
user placeholders do not expose those fields.

Scope OBO token cache and in-flight exchange keys by tenant, issuer,
OpenID subject, scopes, and a SHA-256 hash of the upstream assertion.
This prevents cross-tenant/cross-issuer collisions and avoids reusing
tokens minted from stale rotated assertions.

Use the shared identity helpers for OpenID refresh-flight keys and
refresh-token bridge recovery records so related OBO refresh paths share
the same identity normalization rules.

The helper is intended for auth-boundary and credential-cache code, not
as a blanket replacement for ordinary app user id ownership checks.

* 🛠️ fix: preserve OIDC refresh-token sync on save failures

Sync OpenID refresh-token cookie/bridge state before persisting the
session so a transient session-store failure cannot lose an IdP-rotated
refresh token.

Also trigger sync when the session refresh token differs from the
browser refresh-token marker, not only when the current grant rotates
the token. This lets later writable refreshes repair stale browser
cookies left behind by SSE refreshes.

Route refresh bridge identity through the shared identity helper with
the threaded OBO identity context, falling back to request/user context
when needed.

Add regression coverage for session-save failures, stale browser cookie
repair, non-writable bridge storage, and shared-helper identity fallback.

* 🛠️ fix: keep OIDC refresh bridge during recovery grace

After successful bridged refresh recovery, re-store the stale-cookie bridge
with a short grace TTL instead of deleting it immediately. This lets parallel
/api/auth/refresh requests that already sent the stale browser cookie recover
before they can observe the first response's Set-Cookie.

Retarget the bridge to the refresh token returned by the bridged retry so
B-to-C refresh-token rotation remains recoverable. The grace TTL is parsed with
math() and defaults to 60s, which shrinks the replay window from the original
REFRESH_TOKEN_EXPIRY bridge lifetime to the short recovery grace period.

Remove the now-unused explicit bridge delete path from the service and
data-schemas method surface. Add regression coverage for grace re-store,
identity symmetry, retry failure behavior, and same-key upsert replacement.

* 🛠️ fix: fail closed on OBO MCP user identity mismatch

Add an OBO-specific guard before MCP tool execution that requires the
effective invocation user and captured request user to both have ids and
to match. This prevents OBO tool calls from falling back to a separate
configurable.user_id identity after request-bound OBO context has already
been captured.

Keep the existing user id fallback behavior for non-OBO MCP calls.

Tests cover mismatched OBO users, missing user ids, and the matching-user
path ignoring a conflicting configurable.user_id.

* 🛠️ fix: Guard OpenID bridge retry user identity

Extract the shared OpenID refresh/user-resolution flow in AuthController
so the normal refresh path and bridge-recovery retry use the same grant,
claims, issuer, user lookup, and diagnostic logging code.

Preserve the existing path-specific behavior: the normal path still owns
migration updates and 401 login redirects, while the bridge retry still
falls through to the existing 403 invalid-token response.

Add a bridge-recovery guard that rejects retry results whose resolved
user id differs from the signed openid_user_id cookie before issuing
tokens or re-storing the grace bridge. Cover both the successful
matching-user recovery and the mismatched-user rejection.

* 🛠️ fix: type-safety polish on OBO data layer

Replace refresh token bridge query/update Record<string, unknown> usage
with typed Mongoose FilterQuery and UpdateQuery definitions.

Harden OpenID marker cookie JWT expiry handling by converting refresh
expiry milliseconds to integer seconds and rejecting invalid or
non-positive durations.

Add focused CSRF tests for fractional refresh expiry values and invalid
expiry configuration.

* 🛠️ fix: Bind OpenID session tokens to authenticated identity

Stamp OpenID session token state with the LibreChat user id, OpenID subject,
tenant id, and normalized issuer when tokens are stored.

Fail closed before OBO inline token reuse/refresh when the session token
identity does not match the current authenticated identity, preventing a stale
or mixed Express session from supplying another user's upstream assertion.

Also validate the normal /api/auth/refresh session-token reuse shortcut against
the signed marker-cookie user before returning cached session tokens.

Note: sessions created before this change carry no identity stamp and are
treated as a mismatch. This is self-healing — the reuse path forces a full IdP
refresh (which re-stamps the session) and the OBO path throws, surfacing as a
one-time re-authentication for active OBO users at deploy time. The session
re-stamps within one session lifetime (SESSION_EXPIRY, default 15 min).

* 🛠️ fix: Recover OpenID refresh token drift

Prefer the browser refresh-token cookie when it differs from the
server-side OpenID session state, and force a real IdP refresh in that
case instead of reusing stale session tokens.

Store a short-lived refresh-token bridge when inline OBO refresh writes
a rotated browser cookie but session persistence fails, so follow-up
refreshes can still recover from the old token.

Keep the bridge grace TTL centralized in RefreshTokenBridge so both
recovery paths use the same env-backed value.

Note: drift is measured against the last-synced browserRefreshToken
marker, so the SSE path (intentionally stale cookie, authoritative
session) does not false-positive. Sessions predating the marker have no
browserRefreshToken; for those, drift falls back to comparing the cookie
against the session refresh token and prefers the cookie on difference.
This is the same self-healing pre-change-session window as the identity
binding fix and re-syncs within one session lifetime.

Tests cover cookie/session drift selection, reusable-session bypass on
drift, bridge storage after session-save failure, and the shared bridge
constant wiring.

* 🛠️ fix: Harden OBO token caching and expiry handling

Reject malformed OBO grant responses before writing them to the exchanged-token cache so a missing access_token cannot poison the cache.

Store absolute expires_at values with cached OBO tokens and ignore legacy cache entries without usable expiry metadata. This keeps cached-token freshness based on the token’s real
remaining lifetime instead of reusing the original relative expires_in on cache hits.

Move OBO expiry normalization and skew helpers into packages/api and use them from both the JS exchange service and the TS MCP resolver. Apply a 30-second safety margin with a one-
second floor for short-lived tokens, covered by direct helper tests and caller-level regression tests.

Tests:
- packages/api: npm run build
- packages/api: npx jest src/mcp/oauth/expiry.spec.ts src/mcp/oauth/obo.spec.ts
- api: npx jest server/services/OboTokenService.spec.js

* 🛠️ fix: Harden OBO refresh-token bridge lookup and indexing

Reuse getValidOpenIDReuseUserId for the bridge-recovery user lookup in
refreshController instead of re-verifying openid_user_id inline. The shared
helper enforces the JWT_REFRESH_SECRET presence check and a strict
typeof payload.id === 'string' guard, rejecting tokens whose id claim is
present but not a string (e.g. a numeric id) that the inline check accepted.

Fail closed on issuer mismatch in getRefreshTokenBridge. Both the stored and
the expected issuer are now normalized and compared for equality, so a bridge
is recovered only when both sides agree (both absent, or both present and
equal after normalization). Previously the check was skipped whenever the
stored issuer was absent, allowing recovery across mismatched issuer context.

Drop the unused {oldRefreshTokenHash, userId, tenantId, openidIssuer} index
and the openidIssuer field on RefreshTokenBridgeQuery. The data-layer filter
only queries the 3-field {oldRefreshTokenHash, userId, tenantId} index; the
issuer is verified in application code, not the query. Hoist the repeated
model accessor into getRefreshTokenBridgeModel.

Note: issuer is now load-bearing for recovery. A bridge stored with an issuer
recovers only when the lookup supplies a matching issuer; the recovery lookup
reads user.openidIssuer via AUTH_REFRESH_USER_PROJECTION (an exclusion
projection that retains the field). If a user's persisted openidIssuer is
empty while the stored bridge has one, recovery fails closed (falls through to
normal re-authentication) until the bridge TTLs out — no security regression.

Tests cover invalid signed-cookie payloads bypassing the bridge, both
asymmetric issuer-presence cases, issuer normalization before comparison, and
an index-alignment assertion guarding against re-adding the dropped index.

* 🛠️ fix: Degrade OBO discovery on token resolution failures

Catch expected OboTokenResolutionError failures during MCP tool discovery and
fall back to unauthenticated tool listing instead of aborting discovery. This
keeps discovery aligned with the existing unauthenticated listing behavior while
preserving unexpected errors as real failures.

Also correct OBO tool-call freshness comment and tighten the OBO trust-check
permissions type to the existing role permission shape.

Tests:
- npx jest src/mcp/__tests__/MCPConnectionFactory.test.ts --runInBand --coverage=false
- npx jest src/mcp/oauth/obo.spec.ts --runInBand --coverage=false

* 🛠️ fix: tighten OBO tool-call errors, bridge logging, and flight typing

Move resolveToolCallUserId inside the tool-call try/catch so an OBO
identity mismatch surfaces with serverName/toolName context and the
standard tool-call-failed message instead of an opaque bare Error.

Raise the refresh-token bridge lookup failure log from debug to warn so
transient infrastructure failures on the unauthenticated /api/auth/refresh
path are observable, and guard the message access against non-Error values.

Replace the unknown+cast in isDuplicateKeyError with a hasErrorCode type
predicate so the duplicate-key check reads error.code without an assertion.

Preserve real math/isEnabled in the MCPConnectionFactory test mock (mock
only processMCPEnv) so mcpConfig timeouts no longer resolve to NaN, fixing
the TimeoutNaNWarning that masked slow OAuth retry behavior.

* 🧪 fix: Restore the Flight Uniqueness Index and Buffer the Graph Cache TTL

Two CI failures on the merge, both in suites this environment cannot run
(their MongoDB binary download is blocked).

`GraphApiService.spec.js` still asserted the unbuffered TTL. Graph tokens
route through the same `getTokenCacheTtlMs` as the OBO and openidStrategy
caches, so the entry now expires 30s before the credential does.

`openidRefreshFlight.spec.ts` dropped the database between tests, which takes
the indexes with it, and Mongoose builds them only once when the model is
compiled. Whether the unique `key` index survived into a test was a race with
that one-time build. Without it a second `create` inserts instead of raising a
duplicate-key error, so every worker believes it won the flight — the
mutual exclusion the file exists to prove. Indexes are now rebuilt after each
drop, which also makes the reclaim and complete cases reach those paths for
the right reason.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SxKWxwqxAGckYpRsYTqx3F

* fix: address OBO review findings

* 🔐 fix: Install Bridge Indexes and Carry OBO Through Assistant Recovery

Two findings from the Codex pass on d08c82f0d.

The refresh-token bridge relied on Mongoose auto-indexing for both of its
indexes, and `MONGO_AUTO_INDEX=false` is a supported deployment setting. A
bridge holds an encrypted refresh token and the TTL index is the only thing
that ever deletes one, so under that setting they would accumulate for the
life of the collection while concurrent upserts lost the compound uniqueness
the filter assumes. Installed before the first write, matching the flight
methods and the session and schedule methods before them.

`recoverServerTools`, the assistant create/update path that reruns
`reinitMCPServer` when a referenced server's catalog and connection snapshot
are both missing, was the last reinit site not carrying the upstream-token
closure. For an OBO server the factory rejects the connection outright, so the
assistant write failed with unavailable MCP definitions. It now builds the
provider at that request boundary like the other entry points; assistant
writes have no `res`, so a rotation there falls back to the recovery bridge.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SxKWxwqxAGckYpRsYTqx3F

* fix: harden OBO refresh coordination

* ⏳ fix: Keep Elapsed Expiries Elapsed and Revoke the Superseded Session

Two of the five findings from the Codex pass on fcdc15885 — the two that are
defects in code this branch introduced rather than design questions about the
bridge.

`getSkewedTokenExpiresAtMs` floored every result at a second in the future,
including an expiry the provider had already declared elapsed. An exchange
answering `expires_in: 0` or a past `expires_at` was handed to the MCP
connection stamped valid for another second, which only moves the failure
downstream. The floor now applies to a lifetime that is still live, which is
what it was for; an elapsed one stays elapsed so the caller rejects it. Same
for the cache TTL, which falls back to the elapsed-credential floor.

Bridge recovery left the stale token's durable Session behind. Only the token
it recovered through was passed as `existingRefreshToken`, so that one's
session was replaced while the token the browser actually presented kept its
record until its original expiry. That record, with the marker cookie still
bound to it, is what authorizes local image access for OpenID users — so a
copy of the stale cookie outlived the rotation it had lost. Revoked
explicitly on successful recovery.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SxKWxwqxAGckYpRsYTqx3F

* fix: close OBO refresh review findings

* 🎟️ fix: Carry the Bridged Token Through a Non-Rotating Recovery

Bridge recovery passes the browser's stale token as `existingRefreshToken` so
the durable Session naming it is the record replaced. That also makes the
stale token the fallback the installed session and the refresh cookie use when
a tokenset carries no `refresh_token` of its own, which holds only while the
recovery grant rotates.

An IdP that answers that grant without rotating sends the browser back to the
very token the bridge exists to retire: `storeOpenIDSession` installs and
deletes the same stale record in one call, and the cookie is rewritten to a
token the IdP already rejected — a sign-out on the next refresh. The grace
bridge one line above already guards this with `|| bridgedRefreshToken`; the
resolved tokenset now does the same, so leader and followers alike publish the
recovered token.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SxKWxwqxAGckYpRsYTqx3F

* 🚫 fix: Reject an OBO Exchange That Returns an Expired Credential

Preserving an elapsed expiry through the skew helper only helps if something
acts on it, and nothing did: `MCPManager.callTool` checks the access token and
nothing else before setting the Authorization header, so a credential the IdP
declared spent still went downstream to fail there. It is rejected at the
exchange now, where the reason is known, and retryably — the exchange itself
worked, so a fresh grant can succeed.

Completes the elapsed-expiry change in cb26a6f7d, which made the stamp honest
without giving anyone a reason to look at it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SxKWxwqxAGckYpRsYTqx3F

* fix: close OpenID refresh review findings

* fix: coordinate OpenID refresh entry points

* chore: sort OpenID flight imports

* fix: fence OpenID refreshes during logout

* fix: close OpenID logout publication races

* fix: narrow completed refresh flight

* test: cover bridge cleanup failure after ownership loss

The compensating delete in storeRefreshTokenBridgeWithLease swallows its own
failure so the lease error stays the one the caller sees. Nothing asserted
that, so removing the inner catch left every suite green while callers began
receiving the cleanup error instead.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SxKWxwqxAGckYpRsYTqx3F

* fix: compensate OpenID bridges only on proven ownership loss

The post-write lease assertion deletes the bridge it just published when it
throws, but it threw for two different reasons: a coordination record that is
no longer ours, and a coordination read that simply failed. Treating the second
as the first destroys the only mapping from the token the browser still holds
to the one the IdP already rotated to, so a transient Mongo error on the
headers-already-sent path signed the user out.

Tag the ownership error where the lease raises it and compensate only for that,
preserving the bridge whenever ownership is merely undetermined. A preserved
bridge stays behind the logout revocation fence, so the safe default costs
nothing.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SxKWxwqxAGckYpRsYTqx3F

* fix: reject spent OpenID refresh results

Two ways a refresh could report success while handing back a credential
nothing can use.

An inline refresh carries the previous id_token forward when the IdP omits
one on rotation, so tokenset.id_token is not necessarily freshly issued.
setOpenIDAuthTokens applied its freshness guard only to the session copy and
took tokenset.id_token unconditionally, so /refresh returned an expired
bearer even though the grant produced a usable access token. Skip it only
when it is provably expired: an id_token whose expiry cannot be read stays
preferred, since access_token may be opaque or scoped to another audience.

normalizeExpiresIn preserves a zero or negative lifetime rather than
discarding it, so a grant declaring an already-spent access token still
published, rotating the refresh token and returning a token every freshness
check rejects. Each OBO call then repeated the grant. Reject an elapsed
lifetime before publishing; an unknown lifetime still publishes.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SxKWxwqxAGckYpRsYTqx3F

* fix: harden OpenID refresh publication

* fix: keep identity and results intact through OpenID refresh cleanup

Two follow-ons from the last round's fixes.

Stripping an expired carried-forward id_token from the refresh result removed
the only identity material a rotation without id_token leaves behind. The
result is rebuilt by buildOIDCTokensFromSession, so it carries no provider
claims() either, and getTokenClaims accepts only those two — bridge recovery
failed with "no usable identity claims" before setOpenIDAuthTokens could hand
back the fresh access token. The stripped token now travels in a
non-enumerable marker, alongside the existing browser and predecessor markers,
which identity resolution reads and the authentication response never sees.

The lease drained a pending renewal by awaiting it in finally, so a transient
coordination failure there threw from finally and replaced the operation's
result. The refresh had already settled and published, so the caller saw a
failure on credentials that had rotated. Proven ownership loss is recorded on
ownershipLost and checked before the return, so the drain has nothing to add
but noise; it now absorbs and logs.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SxKWxwqxAGckYpRsYTqx3F

* refactor: fence OpenID recovery publication

* fix: close OpenID publication transaction

* refactor: make OpenID publication transactional

* fix: satisfy OpenID publication type checks

* fix: fence OpenID session publication

* fix: authorize OpenID refresh publication

* fix: bind OpenID replay generations

* fix: fence OpenID response generations

* fix: authorize OpenID token delivery

* fix: linearize OpenID publication delivery

* chore: sort OpenID refresh flight imports

---------

Co-authored-by: J.C. Bartle <jcbartle@users.noreply.github.com>
Co-authored-by: jbartle <jbartle@rand.org>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: jcbartle <7274202+jcbartle@users.noreply.github.com>
2026-08-29 23:55:58 -04:00
Danny Avila
77c2a51cf3
🪧 fix: Advertise Detached Event Actor Support from the Generation Store (#15322)
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* fix: activate detached event actions automatically

* fix: shield detached terminal generations

* perf: share capability availability index

* style: flatten capability status selection

* fix: preserve mixed-version lifecycle shells

* fix: complete detached action store adapters

* fix: close mixed-version capability races

* fix: honor legacy capability success
2026-08-28 16:33:23 -04:00
Danny Avila
487984193a
🪂 feat: Make Event Actor Detached Actions Durable (#15307)
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* feat: make Event Actor detached actions durable

* fix: align detached actor checks with merged base

* fix: close detached actor lifecycle gaps

* fix: break detached action outcome cycle

* fix: deepen detached action ownership

* fix: fence detached launch handoffs

* fix: preserve detached rollout fencing

* test: type detached recovery failure

* fix: close detached ownership handoffs

* fix: stage detached action activation

* fix: persist detached terminal retries

* fix: fence detached durability ownership

* fix: fence trigger lane publication

* fix: fence detached transition generations

* fix: retire failed detached predecessors

* fix: close detached rollout consumers

* test: type detached retry turns

* fix: close detached ownership gaps

* fix: fence detached action resumes

* fix: fence prior-head event actor resumes

* fix: preserve legacy event actor resumes

* fix: align detached resume boundaries
2026-08-28 14:21:04 -04:00
Danny Avila
01f5391ee3
🕰️ fix: Guard expires_in So a Token Response Cannot Outlive Its Credential (#15321)
* 🕰️ fix: Guard `expires_in` So a Token Response Cannot Outlive Its Credential

RFC 6749 §5.1 makes `expires_in` only RECOMMENDED, so a token response may legally omit it.
Four sites derived a lifetime from the raw field, where `undefined * 1000` is `NaN`.

`NaN` is not a short TTL, it is no TTL. `@keyv/redis` writes the key without `PX` because
`NaN` is falsy, so the entry is stored in Redis with no expiration at all; the in-memory
backend embeds `expires: NaN` and every check compares with `>`, always false against `NaN`.
The namespace default does not stand in either, since Keyv applies it with `??=` and `NaN` is
neither `null` nor `undefined`. The exchanged access token was therefore cached permanently at
`openidStrategy.js` and `GraphApiService.js`, and once it genuinely expired the poisoned entry
kept being served with no path to eviction.

The same omission is sharper in `ActionService.js`, where `new Date(NaN).toISOString()` throws
`RangeError: Invalid time value`. Both call sites are inside a `try`, so the failure surfaces as
a generic "Failed to authenticate OAuth tool" that names nothing, and the refresh site falls
through to `requestLogin()` on every attempt, looping with no exit.

The rule had six hand-written homes and three of them were wrong, so it now has one. A new
`packages/api/src/oauth/expiry.ts` normalizes `expires_in` to a positive finite number of
seconds or nothing, and exposes the two shapes callers actually need: a cache TTL that falls
back rather than returning `NaN`, and an absolute expiry that is absent rather than Invalid.
The four unguarded sites adopt it, and the two ad-hoc guards in `openidStrategy.js` and
`OboTokenService.js` are consolidated onto it.

`createHandleOAuthToken` is folded in as well. Its guard already handled `null` and unparseable
strings but admitted `NaN`, since `typeof NaN === 'number'` satisfied its first branch.

The `mcp/oauth` sites are deliberately left alone: `tokens.ts` guards on truthiness and carries
richer logic that reads a JWT access token's own expiry when the response omits one, and the
file is being reworked in #13901.

Closes #15318
Closes #15319

* 🕰️ fix: Address `expires_in` Guard Review Round 1

Preserve an explicitly elapsed lifetime instead of collapsing it into "unknown". `expires_in: 0`
is the provider stating the credential is already dead, which is information; treating it as
absent handed it the one-hour fallback in `createHandleOAuthToken` and dropped the expiry
entirely in `ActionService`, so a credential declared expired could be used and retained for up
to an hour. Both sites preserved that value before this branch, so the collapse was a regression
introduced here.

`normalizeExpiresIn` now returns any finite number, positive or not, and reports `undefined` only
for a lifetime that is genuinely unusable. `getTokenExpiresAt` therefore yields a past timestamp
for an elapsed lifetime, so callers refresh rather than guess.

Cache TTLs cannot pass such a value through raw: Keyv reads a TTL of exactly `0` as "no expiry",
turning a dead credential into the immortal entry this module exists to prevent. `getTokenCacheTtlMs`
floors an elapsed lifetime at one millisecond, which expires immediately without ever writing an
entry that outlives its credential.

Parse numeric strings with `Number` rather than `parseInt`, which truncates a complete value such
as `"3.6e3"` to `3` and would expire an hour-long credential after three seconds, re-exchanging
against the identity provider on every request. An empty or blank string is rejected rather than
read as zero, since `Number('')` is `0`.

* 🕰️ fix: Bound `expires_in` to Lifetimes a Date Can Represent

Parsing the complete numeric string last round made an overflow reachable that `parseInt` had
been masking. `parseInt('1e13', 10)` was `1`; `Number('1e13')` is `1e13`, and `1e13` seconds is
1e16 ms, past the ECMAScript time value range of ±8.64e15. Every derived timestamp was therefore
an Invalid Date whose `toISOString()` throws `RangeError: Invalid time value` — the exact failure
this branch exists to remove, reintroduced by its own fix. The token model derives the same way
at `packages/data-schemas/src/methods/token.ts:19`, so storage and authentication would fail with it.

A lifetime is now reported as unusable unless it can still produce a valid `Date`. The bound is
the time value range halved, leaving room for the `Date.now()` every derived timestamp adds. At
roughly 137,000 years it rejects nothing a provider could mean: a one-year refresh token and even
a hundred-year lifetime still pass through untouched, while `1e13`, `Number.MAX_SAFE_INTEGER` and
`1e300` take the caller's fallback instead of poisoning a timestamp.

The invariant tests now carry the overflow shapes rather than a fixed list of small ones, since a
guard that only sees the inputs its author imagined is how the previous round's regression got in.
2026-08-28 10:47:09 -04:00
Danny Avila
6fba51a35a
🫆 feat: Fingerprint Agent Context for Zero-Read Warm Continuation (#15299)
* feat: add context-fingerprinted warm continuation

* fix: preserve manual skills across warm turns

* perf: keep ordinary agent initialization neutral

* fix: fingerprint complete agent topology

* fix: close warm context replay gaps

* fix: preserve lazy subagent memory scope

* perf: fingerprint only model-bound memory

* fix: project lazy memory capability

* style: sort warm continuation imports

* fix: make warm continuation reconstructable

* fix: preserve lazy skill isolation

* fix: retain scoped skill semantics
2026-08-27 23:01:14 -04:00
Danny Avila
a5fd00cd7a
🎼 feat: Unify Agent Turn Execution Behind One Immutable Plan (#15296)
* feat: unify agent turn execution planning

* fix: preserve automatic subagent activity handles

* fix: gate subagent wakeups for ephemeral parents

* fix: scope subagent wakeup guidance by agent
2026-08-27 22:26:46 -04:00
Danny Avila
03fa98eb37
🕸️ feat: Complete Keenable Web Search Provider (#15288)
* feat: wire Keenable web-search provider into config, schema, and UI

Keenable landed as a search provider in @librechat/agents (#285, shipped in
3.2.58+), but LibreChat did not yet expose it. This adds the config/schema/UI
glue so it can be selected, mirroring the existing Tavily provider.

- data-provider: add `keenable` to SearchProvider type + SearchProviders enum,
  keenableApiKey/keenableApiUrl schema fields, and a keenableSearchOptions block
  (maxResults, site, attributionTitle, timeout).
- data-schemas: register keenable in webSearchAuth.providers and default the
  key/URL placeholders in loadWebSearchConfig.
- api/web: pass keenableSearchOptions through to the provider and handle
  Keenable's keyless model. Unlike other providers it authenticates with no key
  (the public endpoint), picking up an optional key/URL when set; the URL
  override is SSRF-preflighted like other user-provided URLs.
- client: add Keenable to the provider dropdown with an optional API-key input.
- docs: document KEENABLE_API_KEY/KEENABLE_API_URL in .env.example and a
  webSearch example in librechat.example.yaml.
- tests: keyless + keyed auth resolution, config defaults, and schema parsing.

* fix: ESLint no-unused-vars and clarify Keenable yaml example

- Remove the now-unused RerankerTypes import in data-schemas web.ts (the lint
  job runs with --max-warnings 0 on changed files, so this latent warning failed
  CI once the file was touched).
- Note in the librechat.example.yaml Keenable stanza that a scraper (and
  reranker) is still required for web search to load, and include a Firecrawl
  scraper in the example.

* chore: fix import order drift (sort-imports)

* feat: add Keenable as a keyless scraper and select it without a pinned provider

The Keenable scraper landed in @librechat/agents#337, so wire the scraper
category the same way the search provider already is: `scraperProvider:
keenable` reads pages through Keenable's public fetch endpoint with no key
(a key only lifts rate limits, and the endpoint is overridden with
KEENABLE_FETCH_URL). Paired with `rerankerType: none` this makes a fully
keyless web-search stack possible for the first time.

Also closes the Codex finding on this PR: because none of Keenable's auth
fields are required, the generic auth loop skips it whenever it isn't pinned,
so a key submitted through the API-key dialog (which cannot pin a provider)
left the providers category unauthenticated. Keenable is now selected in that
case, gated on one of its values actually being present so installs that
configured nothing keep their current behavior. The scraper gets the same
fallback, additionally gated on Keenable being the resolved search provider,
so it never silently scrapes for another provider.

* fix: select the Keenable scraper from a supplied key, not only for Keenable search

The API-key dialog submits credentials and cannot pin a provider, so choosing
Keenable as the scraper while search stays on Serper/SearXNG/Tavily had no
effect: the unpinned-scraper fallback required Keenable to also be the resolved
search provider.

A supplied Keenable value now triggers it as well, which is the only signal the
dialog can send. The fallback still runs only when no keyed scraper
authenticated, and with neither trigger the category stays unauthenticated, so
a deployment that never configured Keenable is unaffected.

Note the fully keyless choice still cannot be expressed through the dialog:
Keenable's key is optional, so picking it with no key submits nothing at all.
librechat.example.yaml now documents pinning scraperProvider: keenable for that
case.

* style: Sort Keenable imports

* fix: Harden Keenable auth resolution

* fix: Preserve Keenable selection intent

* fix: Fail closed on invalid web search auth

* fix: close keenable auth gaps

* style: sort web auth imports

* fix: preserve web search selection integrity

* fix: isolate web search auth ordering

* fix: silence expected credential misses

* chore: bump agents sdk

* fix: preserve web search preference ownership

* fix: forward cleared Keenable endpoint

* style: sort web search hook imports

* fix: require intent for credential clears

---------

Co-authored-by: Ilya Bogin <ilya.bogin@keenable.ai>
2026-08-27 14:29:20 -04:00
Danny Avila
de59da9636
🎟️ refactor: Require Credentials for Local Image Access by Default (#15252)
* 🔐 fix: Protect Local Image Access by Default

* 🔐 fix: Scope Image Authorization to Active Sessions

* 🧹 style: Format Image Authorization Checks

* 🛡️ fix: Harden Image Avatar Authorization

* 🧭 style: Sort Image Authorization Imports

* 🔐 fix: Close Image Authorization Review Gaps

* 🧭 fix: Normalize Stored Avatar Base Paths

* 🏢 fix: Resolve Tenant Assistant Image Policy

* 🛂 fix: Enforce Effective Image Access Policy

* 🧹 style: Flatten Assistant Config Selection

* 🧷 fix: Preserve Image Access Compatibility

* 🪪 fix: Make Image Sessions Revocable

* 🏗️ fix: Move Image Session Policy Into API
2026-08-27 09:55:27 -04:00
Danny Avila
8b1fcc0fc2
🌐 fix: Expose Gemini Models to Vertex AI Agents (#15234)
* 🌐 fix: Expose Gemini Models to Vertex AI Agents

* ♻️ refactor: Resolve Shared Vertex Model Catalogs

* fix: Preserve Exact Vertex Model Catalogs

* style: Format Agent Model Selection

* test: Preserve Native FS in Stable Diffusion Spec
2026-08-27 06:50:23 -04:00
Danny Avila
68fc46a055
🪢 feat: Resume Bound Event Actors from Checkpoint Forks (#15227)
* feat: resume event actors from checkpoint forks

* fix: fence event actor checkpoint uncertainty

* fix: satisfy event actor type contracts

* fix: make actor reconciliation recoverable

* fix: preserve event actor lifecycle transitions

* fix: fence event actor lifecycle outcomes

* fix: enforce event actor lifecycle ownership

* fix: retain event actor settlement proof

* 🔒 fix: Retain Event Actor Receipts Through Repair and Bound Their Journal

Repair and compensation deleted the reconciliation row they resolved, which
was the only durable proof that the invocation had already applied an external
action. A delayed duplicate owner could then reacquire the same invocation id
and repeat that action. Both resolutions now retire their receipt to `settled`
and record how it settled, so the same-id tombstone survives; `history_repaired`
and `action_compensated` still force a cold rebuild. Compensation undoes the
effect without re-authorizing the delivery, so a legitimate retry must arrive
under a new invocation id. A retried repair converges on its own receipt.

Bound the journal so a long-lived actor cannot grow its conversation document
without limit: a new fence is admitted only when no active lifecycle row
exists, so a capped push can evict nothing but the oldest settled receipts.

Stop shipping the unbounded source payload on every bound-child continuation.
It rode the delivery body regardless of the feature flag while the sibling
`fire` body deliberately sends event identity alone, so a large webhook payload
could push a previously working delivery past the chat route's body limit. The
actor binds an invocation from identity and never builds the prompt from it.

Blank the positional token map on warm continuations. It is derived from the
full DB history, while a warm run executes on checkpoint-restored state, so its
indices address different messages and the pruner never recounts them —
misattributing cached counts to the wrong messages in both directions.

Keep the replaced-claim exit on its cleanup path when preserving reconciliation
fails: the committing CAS already left a blocking row, so the failed status
upgrade costs provenance, not safety.

* 🧪 test: Pin the Warm Continuation's Map/Summary Asymmetry

Give the warm-continuation client test a populated token map and a real
cross-run summary so its assertions bite: the positional map must arrive
blank (checkpoint-restored state no longer matches DB-derived indices, and
the pruner never recounts a populated entry) while `initialSummary` must
pass through unchanged — it rides the system tail and summarizes
pre-boundary turns that were excluded from the very history the committed
checkpoint was built from, so blanking it would silently drop context no
warm run can recover.

* ⚖️ fix: Honor Compensation in Settlement and Age-Bound the Receipt Journal

A compensated receipt still tombstones its invocation id, but its external
effect was explicitly undone — the terminal handler nonetheless replayed
every settled lifecycle's stored action as authoritative and settled the
public outcome as applied, telling an action-aware source the operation
stands and suppressing the new-invocation retry compensation requires. The
handler now settles a compensated invocation as failed with an explicit
compensation error, overriding even fresh applied run evidence from a
replayed generation; verified and repaired receipts continue to replay
applied.

Receipt eviction is now primarily age-based: a stale same-id owner is
bounded by time, not by how many newer invocations settle, so the previous
count-only slice let a high-rate actor evict a tombstone while its delayed
duplicate owner could still wake and repeat the action. Admission prunes
only settled receipts older than a retention window that dwarfs every
generation, job, and delivery-retry lifetime, and the count cap is demoted
to a raised document-size backstop.

* 🔀 fix: Serialize Compensation Against Settlement and Never Evict Live Receipts

The terminal handler read its lifecycle snapshot, verified history, and then
settled the public outcome — so a compensation resolving the same receipt
during that window lost: the handler settled applied from its stale snapshot
and no retry could ever change the replay-identity-locked outcome. The
receipt's status CAS is now the serialization point: verification resolves
the receipt BEFORE settling, whichever transition wins determines the public
outcome, and a crash between resolve and settle converges through the
retained receipt's replay. The verified-replay probe requires the receipt's
own resolution, so a compensated receipt can never satisfy a verification
retry. This inverts the settle-before-receipt ordering deliberately: that
ordering guarded proof that resolution used to delete, and the receipt now
retains its full action proof through resolution.

The document-size cap is no longer an eviction quota. A receipt inside its
retention window is never discarded: when the journal holds a full cap of
unexpired receipts, new invocations are refused fail-closed until receipts
age out, making duplicate protection and document integrity simultaneous
invariants instead of a rate-dependent trade.

* 🎓 fix: Keep Skill-Bearing Event Actors on the Legacy Path

Skill primes are spliced into the message list directly ahead of the newest
message, and a warm continuation forwards only that newest message — so a
checkpoint-restored actor would keep serving the prime bodies baked in at
its last cold start and never observe an edited or newly attached skill.
Until the actor head carries a context fingerprint that forces a cold
rebuild when the agent's skill context changes, agents with always-apply or
manual skill primes stay on the legacy path, which re-primes fresh bodies
every turn: correct on every event, just never warm.

* 📜 fix: Gate Fork Mode on the Skills Capability, Not Just Request-Time Primes

History-derived re-priming was a third path into the same staleness class:
an actor that previously invoked a skill carries no request-time prime
arrays, yet primeInvokedSkills re-resolves that skill's current body from
history each turn and the warm slice drops the reconstruction — leaving the
checkpoint's old body active after edits. The fork gate now keys on the
priming hook itself (present exactly when the skills capability is enabled)
alongside the request-time arrays, so every skill-body path routes to the
legacy rebuild until #15235's context fingerprint restores warm
continuation for skill-bearing actors.

* 🧾 fix: Capture Applied-Action Proof at Tool Execution, Not After sendMessage

The executor read applied-action evidence from the run-step collection the
instant sendMessage resolved, but that collection is populated
asynchronously — an applied invocation could classify as actionless
(runSteps still empty while the tool result already streamed), discarding
its fork and stranding the actor cold while the terminal handler later
settled the same delivery as applied from the persisted evidence.

Authoritative proof is now recorded in graph context the moment the
expected tool executes: the request-owned recorder observes the tool-end
chain (which ToolNode dispatches synchronously with both input and output)
and applies the same fences as run-step evidence — exact tool name with the
MCP-suffixed form, the declared argument subset against the execution
input, an error-free result, and the background non-execution receipt
exclusion. readAppliedAction consults the receipt first; run-step
inspection remains the fallback for paths that bypass the tool-end chain.

Regression coverage reproduces the observed ordering: the real executor
commits the head from the receipt while run steps are empty, warm-continues
the next event, and never re-executes the action; recorder fences and the
receipt-first controller wiring are covered separately.

* 🎯 fix: Supply Execution Arguments to the Tool End Callback

The live Vertex + MCP canary exposed a contract mismatch the synthetic
fixtures hid: the ON_TOOL_EXECUTE execution path invoked its tool end
callback with output only, while the action recorder must verify the
declared argument subset against the execution input. The receipt never
qualified, every turn fell back to cold history rebuilds, and the
tournament advanced with zero actor heads and zero retained checkpoints
while looking successful.

The execution handler owns both halves at the same moment, so the fix is
at the source rather than a correlation store: ToolEndCallbackData gains
the executed call's input and every callback site passes tc.args. A
handler-level regression drives the real createToolExecuteHandler and
asserts the callback receives both fields; recorder regressions pin the
production shapes — an output-only tool end must starve an
argument-fenced receipt rather than trust an unfenced match, and still
qualifies a name-only expected action.

* 🕵️ fix: Mark Background Deliveries So They Cannot Impersonate Applied Actions

The background-claim callback reports the ORIGINAL tool's name for artifact
attribution on the poll turn that harvests a completed task. A name-only
expected action could therefore be impersonated by work some earlier turn
dispatched: the recorder would attribute that delivery to the current
invocation and commit a head whose state never contained the invocation's
own action. The run-step evidence path never had this hole — it sees the
poll tool's name — so the recorder must match its provenance discipline.

Delivery callbacks now carry an explicit backgroundDelivery marker set at
the one site that rewrites the name, and the recorder ignores marked
deliveries outright. Regressions pin both halves of the contract: the
delivery callback must carry the marker with the poll call's arguments,
and a marked delivery can never qualify even a name-only expected action.

* 🧿 fix: Version Invalidations, Keep Evidence Ahead of Output Policy, Gate Detachable Actions

Three closeout-round findings, each converted into an invariant.

Every legacy-path invalidation now advances a durable epoch — including for
headless and already cold-marked actors, where the marker alone leaves no
CAS-visible trace — and the actor-head CAS requires the epoch observed at
preparation. A concurrently prepared fork whose history predates an
intervening legacy turn can no longer commit past it; the commit reports an
ordinary conflict and journals.

Execution identity is now emitted before post-execution output policy: when
a side-effecting tool succeeds but its returned content is withheld by the
output filter, the callback delivers an outputFiltered receipt with blank
content — the recorder accepts it as proof (rejecting model-detached calls
it cannot distinguish through the blank shape), the artifact path never
sees it, and an applied action is no longer reclassified actionless and
re-executed on retry.

Background-capable expected actions stay off the fork path: dispatch
returns a launch handle every evidence fence correctly rejects, and the
completion is provenance-marked as another turn's work, so a fork would
settle actionless before the external effect lands with nothing to stop a
retry from dispatching it again. The gate mirrors the MCP-suffix name
matching of the evidence path.

* 🚧 fix: Seal the Whole Legacy Turn Behind a Second Epoch Advance

The epoch fenced only the legacy turn's start: a fork preparing after the
begin invalidation but before the turn's message persistence observed the
new epoch and cold marker, rebuilt from history that did not yet contain
the turn, and committed cleanly because nothing advanced the epoch again —
making the incomplete rebuild authoritative and clearing the marker.

Every legacy event turn now seals its invalidation at terminal persistence
with a second epoch advance, on the success, replaced-claim, and error
exits alike. Sealing deliberately carries no quiescence requirement — it
must succeed while a fork fence is active, because that is exactly the
mid-turn race it defeats — and a fork that already committed against the
begin epoch is healed the same way: the seal re-marks the head cold, so
the next event rebuilds with complete history. Seal failure never diverts
the turn's own exit; the begin bump still fences everything prepared
before the turn.

* 🔗 fix: Replace the Best-Effort Epoch Bump With a Durable Legacy-Turn Fence

The second epoch advance could not make a legacy turn atomic, and three
findings shared that root cause: two conditional updates left a headless
gap a fork could create the head inside; the error exit sealed before
saveErrorTurn made the error history durable; and any crash or failure
between persistence and sealing left an incomplete fork authoritative,
because the seal was best-effort and its failure was swallowed.

A legacy turn now carries one durable fence. A token is written before
execution by a single update-pipeline write — no two-write gap, and the
cold marker is applied only where a head exists via $cond/$$REMOVE. While
the token is present no fork may prepare (the adapter refuses) or commit
(the CAS requires its absence), because the turn's messages are not yet
durable. One atomic write clears the exact token and advances the epoch
once history is persisted — after saveErrorTurn on the error exit — and
success, replacement, and error exits all route through it.

Failure is now fail-closed rather than silent: a failed seal leaves the
token set, which keeps blocking forks and is logged as such, and a fence
abandoned by a crashed turn is reclaimed only once stale, advancing the
epoch and marking any head cold so the next event rebuilds from whatever
history actually survived.

* fix: serialize legacy event actor turns

* fix: close legacy actor fence ownership gaps

* fix: preserve legacy actor persistence fences
2026-08-26 08:39:00 -04:00
Marco Beretta
0383030817
⚡ perf: Avoid Parallel Full and Paged Prompt Loading on Startup (#15031)
Co-authored-by: Danny Avila <danny@librechat.ai>
2026-08-25 21:21:17 -04:00
James Todaro
018775de07
🧾 fix: Honor Disabled Transactions on the Assistants Usage Path (#15100)
* 🧾 fix: Honor Disabled Transactions on the Assistants Usage Path

Thread the resolved transactions config through `recordUsage` from each of
its callers, so `transactions.enabled: false` is honored on the assistants
token spend path.

* 🧾 fix: Thread the transactions config through the vision-request caller

Address review: `ToolService.processVisionRequest` also records usage without
the resolved config, and `recordUsage`'s documented return type did not match
the function.

* 🧾 fix: Set the resolved transactions config after the usage spread

- provider usage could carry a `transactions` key that overwrote the trusted value
- matches the ordering the other `recordUsage` callers already use
2026-08-25 08:30:12 -04:00
Danny Avila
4b113697b5
🔌 feat: Background Execution Toggles for Actions & Plugin Tools (#14407)
* 🧵 feat: Background Execution Toggles for Actions & Plugin Tools

* 🩹 fix: Resolve action background opt-in across encoded-domain forms and scope it per action

* 🧹 refactor: Resolve action domain in a single pass

* 🧩 fix: Merge Normalized Action Background Options

* 🪢 fix: Reconcile Action Background Aliases

* 🧭 fix: Harden Action Background Compatibility

* 🕰️ test: Allow Settled Task TTL Expiry

* 🧬 fix: Merge Refreshed Action Tool Registrations
2026-08-25 08:13:13 -04:00
Danny Avila
d641c398d5
🧳 fix: Port Subagent Control Receipt Writes to DocumentDB-Safe Operators (#15171)
* fix: harden subagent control receipt persistence

* fix: harden durable subagent control replay

* fix: await terminal control receipts on shutdown

* fix: close subagent control replay races

* test: type stale-owner transport fixture

* fix: quiesce durable subagent controls

* test: await subagent shutdown durability boundary

* fix: serialize durable subagent controls

* fix: fail shutdown on cleanup errors

* fix: report cancellable result availability accurately

* fix: fence subagent control receipt ownership

* fix: close distributed control receipt races

* test: type control receipt race fixture

* chore: require authoritative control receipts

* fix: close subagent control lifecycle races

* style: separate control reservation member

* test: harden subagent settlement wait

* fix: preserve authoritative control replay state
2026-08-24 20:05:39 -04:00
Danny Avila
a997275902
🧾 feat: Persist Authoritative Subagent Control Receipts (#15168)
* feat: persist subagent control receipts

* fix: require control receipt persistence

* fix: preserve authoritative control history
2026-08-24 11:39:56 -04:00
Paco Cartones
bf1e13b806
🥁 fix: Compare TOTP Codes in Constant Time (#15157)
Co-authored-by: pacocartones <pacocartones@users.noreply.github.com>
2026-08-24 09:10:03 -04:00
Danny Avila
fc2b8584c4
📇 feat: Surface Event Child Activity Through a Bounded Parent Index (#15142)
* feat: surface event-driven child activity

* fix: keep child task aggregation documentdb-compatible

* fix: address event activity review findings

* test: provide markdown message context defaults

* fix: report bounded child history truncation

* fix: preserve current child activity state

* fix: preserve durable event child activity

* fix: handle missing task timestamps

* fix: keep active event snapshots live

* fix: preserve event activity across valid anchors

* fix: close event child activity gaps

* fix: preserve event activity across resume
2026-08-23 18:50:00 -04:00
Danny Avila
8969ee4b18
🎚️ feat: Configure Agent Event Runtime in YAML (#15128) 2026-08-23 02:37:33 -04:00
Danny Avila
c2aa688d73
🖥️ feat: Stream PTC Inner Tool Calls as a CLI-Style Trace (#15115)
* 🖥️ feat: Stream PTC Inner Tool Calls as a CLI-Style Trace

Programmatic tool calling runs a whole program inside the sandbox, and the
tool calls that program makes open no run step of their own. The card showed
one running spinner for the entire execution, with no sign of what the code
was doing.

Emit a new `on_ptc_tool_call` step event for each inner invocation — once on
dispatch, once on settle — and render them under the code as a terminal-style
trace: status glyph, tool identity, argument preview, duration, with a failure
message printed under the call that produced it.

The seam is the tool map the sandbox bridge resolves inner calls against.
`instrumentPtcToolMap` proxies `invoke` on each entry and leaves every other
property (name, schema, mcp) passing straight through, so nothing about
execution changes and emission failures can never fail a tool call.

Client state is a per-tool-call Recoil atom keyed like the sandbox-starting
and subagent atoms — live for the session, cleared on conversation switch so
a finished program's trace stays readable.

* 🩹 fix: Address Codex Review on the PTC Tool Trace

Five findings, all confirmed against the source before fixing.

Scope the trace atoms to a message occurrence. The hook already documents
that providers repeat a tool_call_id across turns and even within one
message, and `call_id` restarts at :0 for every outer call — so two programs
sharing `call_0` merged into one card. Key by (response message id, tool call
id) via `ptcTraceKey`, mirroring `subagentProgressKey`; the event's `runId`
already carries the message id and the card reads its own from MessageContext.

Prune unsettled rows on resume. Inner calls are not content parts, so the
resume snapshot cannot rebuild them, and `trackReplayEvent` only persists
OAuth events — a call that settled during a disconnect left a spinner that
never resolved. Settled rows are real history and stay.

Make the argument preview budget-aware. Iterate keys rather than entries so
the budget check can actually skip work, and clip against a bounded window so
a multi-megabyte value is never collapsed in full to build a 40-character
preview.

Catch the resumable emission promise. The synchronous try/catch around the
emitter cannot observe a rejected `emitChunk`, so a failing transport raised
an unhandled rejection per event instead of dropping telemetry.

Announce completion to assistive technology. The check glyph is decorative and
a fast call renders no duration, so a settled row previously announced no
outcome; each row now carries an sr-only status and the visible cell that
duplicated it is hidden.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MBRQUsPXSvDBnjrSDoXWHP

* 🧹 fix: Repair CI Failures on the PTC Tool Trace

Two failures on the previous head, both mine.

`Tests: api (shard 2/3)` — 46 failures in `initialize.spec.js`, all
`TypeError: createPtcProgressEmitter is not a function`. The suite mocks the
callbacks module with an object literal, and wiring the new emitter into
`initialize.js` without adding it there left the factory undefined at call
time. Added it alongside `createAttachmentEmitter`, plus an assertion that it
receives the same generation fence as every other resumable emitter — a stale
epoch would leak one run's inner calls into the next.

`Static checks` — import-order drift in `PtcToolTrace.tsx` and `handlers.ts`,
repaired with `scripts/sort-imports.mts`. ESLint and Prettier both passed, so
only the dedicated check caught it.

`openai.js` and `responses.js` never take the emitter, so their specs were
unaffected; verified the initialize mock now covers every name the module
destructures.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MBRQUsPXSvDBnjrSDoXWHP

* 🔐 fix: Address Second Codex Review on the PTC Tool Trace

Three of five findings actioned; two answered on the thread.

Respect tool-argument PII filtering (P1). Inner calls never reach
`filteredToolArgumentsResult` — the sandbox bridge invokes them directly — so
the trace was the one path putting their values on the wire in a deployment
that had configured `filters.toolArguments.pii`. When any of the name /
arguments / output fields are filtered, the emitter now omits both the
argument preview and the failure message, which routinely quotes the argument
that caused it. Name, status and duration still report.

Drop the light/dark-specific background (P1). `dark:bg-transparent` stepped
outside the semantic roles and would lose the intended separation under a
custom theme. The pane now sets no background at all and inherits the card's
surface, which resolves to the same color the override produced in both
default themes and stays correct when a theme reassigns its roles.

Bound the live trace (P2). A program looping over a large collection made
every event copy an ever-growing array and rendered a row per call. The trace
now keeps a rolling tail of 100 rows and counts what it evicted, surfaced as
"+N earlier calls" so the cap is never silent. A settle whose row is gone —
evicted, or pruned across a resume gap — no longer reappears out of order.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MBRQUsPXSvDBnjrSDoXWHP

* ✅ test: Keep PTC Trace Tests Aligned With Caller-Capability Filtering

Left out of the merge commit by a staging slip; without them
`handlers.spec.ts` fails on the merged tree.

`#15105` restricts the PTC tool map to tools whose `allowed_callers` admit
code execution, so the existing trace test's registry entry — which declared
none, defaulting to `direct` — was filtered out before the instrumentation
could see it. Declare the fixture `code_execution`.

Add a guard for the resolution itself: a `direct`-only tool must never appear
in the instrumented map. Tracing wraps the eligible map, and this fails if a
later change reorders that and lets the trace widen what the sandbox reaches.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MBRQUsPXSvDBnjrSDoXWHP

* 🛡️ fix: Close Name Disclosure and Follow the PTC Trace Tail

Two findings from the third Codex pass on `17a9ec9`.

Redact filtered inner-tool names (P1). The previous gate suppressed argument
and failure previews but the event still carried `name` verbatim, so a
deployment whose `filters.toolArguments.pii.fields` includes `name` could see
a blocked identifier disclosed through the trace — the one path inner calls
take, since they never reach `filteredToolArgumentsResult`. Inner tool names
are now inspected once per PTC call with the same `extractToolArgumentContent`
+ `inspectContent` pair the executor uses; any that trip the policy are left
unwrapped, so they still execute and emit nothing. An un-inspectable name
fails closed.

Follow the trace tail (P2). The row list is a 200px scroller that never moved,
so once a program exceeded the viewport the card sat on the oldest calls while
live activity accumulated below the fold. Reuse `useFollowScroll` — the hook
the code and command panes already use — which pins to the tail while calls
are running and yields the moment the reader scrolls up. The host card threads
its disclosure state so a collapsed pane is never scrolled invisibly.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MBRQUsPXSvDBnjrSDoXWHP

* 📌 fix: Pin the PTC Trace Through Its Final Settle

The fourth Codex pass on `4bf68e1`, one P2 finding.

`useFollowScroll` returned early whenever `active` was false, so the one
change it most needed to follow was the one it skipped. A failing inner call
settles by appending its error line in the same commit that clears the last
running row: the content grows and the stream ends together, and the pin that
would have revealed that line never fired. On an expanded, bottom-pinned pane
the failure — the row a reader most wants — stayed below the fold.

The falling edge of `active` now pins too, but only when the content changed
with it. Ending a stream on its own still leaves the pane where the reader
left it, which is what the existing contract promises and what the sibling
code and command panes rely on; a reader who has scrolled up is untouched
either way.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MBRQUsPXSvDBnjrSDoXWHP

* 🔌 fix: Keep PTC Calls That Outlive a Reconnect

Fifth Codex pass on `085a83f`; one of its two findings.

Pruning rows across a resume gap deleted every `running` row, but a stream gap
is not proof the call ended. A call still executing across the reconnect
settles normally on the restored live stream — and `applyPtcToolCall` drops a
settle whose row is gone, by design, so an evicted row cannot reappear out of
order. The call therefore vanished from the trace despite having run, which is
worse than the spinner the pruning existed to prevent.

Rows are now marked `interrupted` instead of removed. A call whose settle was
genuinely lost in the gap reports that honestly rather than spinning forever,
and one that survives the gap settles onto the row it opened, reporting its
real outcome and duration. `interrupted` is a client-side conclusion, so it
widens the row status locally and leaves the wire contract alone.

Two cases added: the gap marks rather than drops, and a post-reconnect settle
lands on its marked row; plus a render case for the new outcome.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MBRQUsPXSvDBnjrSDoXWHP

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-08-23 01:18:14 -04:00
Danny Avila
1de88e7e91
📨 feat: Continue Bound Child Agents from Events (#15112)
* feat: add authenticated agent event ingress

* style: sort agent ingress imports

* fix: harden agent event ingress

* fix: bind event provenance to API keys

* fix: inspect event input with legacy PII filters

* fix: scope event status reads to source keys

* fix: bind event status reads to remote sources

* feat: add bound event-driven child turns

* fix: harden event-bound child continuations

* fix: satisfy event binding type contracts

* fix: close event actor lifecycle races

* fix: harden event actor dispatch continuity

* fix: fence event actor resume lifecycle

* fix: bind event actor state to lifecycle

* fix: preserve cascade write outcomes

* test: type cascade failure injection

* style: sort cascade test imports

* fix: harden event child lifecycle boundaries

* fix: make event cleanup retryable

* fix: annotate event retention clock

* fix: reconcile partial cascade metadata

* fix: recheck event binding expiry on resume

* fix: fence event actors by retention deadline

* fix: close event actor lifecycle races

* fix: harden event child lease acquisition

* fix: lazy-load event child lease adapter
2026-08-23 01:15:57 -04:00
Danny Avila
89494d45fd
🚦 fix: Restrict Programmatic Tool Execution Maps (#15105)
* fix: restrict programmatic tool execution maps

* chore: bump `@librechat/agents` to v3.6.10

* fix: honor live programmatic caller projections

* style: sort caller capability imports

* test: expect caller projection loader argument

* chore: bump agents sdk to v3.6.11

* refactor: use SDK caller projection type

* style: sort agent handler imports
2026-08-22 11:02:09 -04:00
Danny Avila
d3e70159ca
📡 feat: Stream Detached Subagent Activity (#15111)
* feat: stream detached subagent activity

* fix: annotate activity stream limits

* fix: isolate subagent activity imports

* fix: harden detached subagent activity lifecycle

* test: cover synchronous activity transport failure

* test: include required subagent activity identity

* fix: identify and reconnect subagent activity events

* fix: bound subagent activity lifecycles

* fix: close subagent activity handoff races

* fix: bind and synchronize activity subscriptions

* fix: detect fresh activity attachment

* fix: complete activity synchronization handoff

* fix: bind activity sync and failure circuits

* fix: expose subscription-bound synchronization

* fix: fence activity reconnect publications

* test: make detached timeout settlement deterministic

* fix: fence Redis activity attachments

* fix: close failed activity streams

* perf: reuse fenced activity frontier

* style: sort subagent thread imports

* fix: preserve queued subagent activity

* test: type activity publication counter

* fix: disconnect subagent activity subscriber

* fix: close background activity lifecycle gaps

* fix: preserve streamed activity spacing

* fix: preserve bounded live subagent activity

* fix: merge durable subagent activity safely

* fix: model detached activity coverage

* fix: type detached activity inputs

* fix: order overlapping subagent activity

* chore: sort activity test imports

* fix: buffer subagent activity handoff gaps

* fix: flush activity after parent close

* fix: advance closed activity suffixes

* fix: preserve detached activity ordering

* fix: close detached activity delivery races

* fix: bound shared Redis subscriber readiness

* fix: expire shared Redis subscription readiness

* fix: clean up late Redis subscriptions

* fix: preserve late Redis subscription fallback
2026-08-22 09:45:27 -04:00
Danny Avila
3ebef4c84e
📨 feat: Add Authenticated Agent Event Ingress (#15110)
* feat: add authenticated agent event ingress

* style: sort agent ingress imports

* fix: harden agent event ingress

* fix: bind event provenance to API keys

* fix: inspect event input with legacy PII filters

* fix: scope event status reads to source keys

* fix: bind event status reads to remote sources
2026-08-22 01:09:04 -04:00
Danny Avila
67b7b441b2
🛂 feat: Filter Model-Bound Content by Source (#14425)
* feat: introduce optional content protection seam

* feat: enforce source-aware content filters

* feat: complete source-aware content enforcement

* test: activate skill file-text fail-close fixtures

* fix: harden source-aware content filters

* fix: harden model-bound content filtering

* fix: preserve legacy filters and generated files

* fix: inspect shared scalar metadata

* test: align mocks with current dev dependencies

* feat: add persisted content filter safeguards

* feat: complete source-aware content filter enforcement

* fix: move resume content preflight into TypeScript

* fix: close content inspection edge cases

* fix: harden content protection boundaries

* fix: complete content protection safeguards

* test: align persisted memory filter coverage

* fix: reconcile content protection with current dev

* fix: reconcile content protection with latest dev

* fix: close content protection review gaps

* fix: enforce source-aware provider boundaries

* fix: preserve legacy PII preflight semantics

* test: stabilize stored branch preflight fixture

* fix: defer agent writes until protected model admission

* perf: harden source-aware model-bound filtering

* fix: canonicalize provider lineage before validation

* fix: satisfy model-bound callback type checks

* perf: Bound content protection filtering work

* fix: Bound submission array traversal

* fix: Stabilize bounded content snapshots

* fix: Scope model-bound traversal overflows

* fix: Preserve scoped content inspection

* fix: Accumulate aggregate traversal scopes

* fix: centralize content policy boundaries

* test: align deferred tool policy context

* test: align controller policy mocks

* style: normalize content protection imports

* fix: close content policy review gaps

* fix: narrow active skill policy config

* fix: address content protection review boundaries

* fix: retain exact provenance overflow sentinel

* fix: preserve literal and scoped provenance updates

* fix: narrow persisted edit provenance

* fix: isolate exact overflow attribution

* fix: centralize stored prompt protection

* fix: fail closed on incomplete transcript evidence

* fix: align canonical transcript routing

* refactor: centralize content policy preflights

* fix: isolate upload policy error typing

* style: sort policy preflight imports

* refactor: centralize content policy boundaries
2026-08-21 22:43:32 -04:00
Danny Avila
8ae94afa91
🪡 fix: Thread Parent Message ID Through MCP Request-Scoped Bodies (#15095)
* fix: Unify MCP request-scoped headers

* fix: address request-scoped MCP review findings

* test: preserve request scope on status errors

* fix: treat authorized on-demand MCP servers as ready

* refactor: separate MCP readiness from connection state

* fix: preserve on-demand MCP readiness labels

* test: satisfy OpenAI conversation ownership guard

* fix: keep MCP action predicates boolean

* fix: close deferred MCP request context gaps

* fix: preserve on-demand MCP configuration actions

* fix: fail closed on unavailable MCP parent context

* test: complete MCP connecting-state mocks

* fix: preserve missing MCP parent on continuations

* fix: align native MCP request identities

* fix: preserve edited MCP parent identity

* test: use scoped Agent initializer fixture

* test: expose MCP request body helper

* fix: preserve MCP turn identity across resume

* style: sort stream metadata imports

* fix: carry normalized MCP identity to execution
2026-08-21 16:33:01 -04:00
Dustin Healy
f02ce63d57
✂️ fix: Strip Redundant Server-Name Prefixes from MCP Tool Keys (#14732)
* ✂️ fix: Strip Redundant Server-Name Prefixes from MCP Tool Keys

MCP servers that prefix every tool with their own name produce model-facing keys that embed the server twice once the _mcp_<server> suffix is appended, pushing long tool names past provider 64-character function-name limits. Tool keys now drop a leading <normalizedServerName>_ prefix (case-insensitive, skipped when a sibling tool already owns the stripped name). The original upstream name is recorded as serverToolName on the cached definition and is always what tool calls send to the server, and runtime lookups also try the stripped spelling of persisted pre-strip keys so existing agents keep resolving.

* 🩹 fix: Keep Stripped MCP Tool Keys Provider-Safe and Collision-Free

Assistant writers submit catalog entries verbatim, so the internal serverToolName mapping is now removed from provider-facing definitions before they reach create/update payloads. Prefix stripping is collision-guarded over the resulting name set rather than raw siblings only, which also covers case-variant prefixed pairs under the case-insensitive match.

Assistant payload healing now rewrites a pre-strip persisted key to the stripped catalog key when that key actually exists in the loaded definitions, and legacy agent references keep their persisted spelling as the runtime instance name so per-tool options stay applied while the upstream call still uses the matched entry's raw name.

* 🧷 fix: Harden Stripped MCP Tool Keys Against Heal, Collision, and Cache Edges

The pre-strip heal now resolves the key boundary against both raw and normalized server spellings, mapping back to the raw name for the shadow and membership guards, so keys persisted after server-name normalization heal too. Collision detection iterates to a fixpoint so a fallback to a raw name cannot silently collide with another sibling's stripped result, and a stripped remainder equal to a synthetic marker (wildcard or server pin) is never produced.

MCP catalog cache slices are versioned so replicas that predate serverToolName never read stripped entries during a rolling deploy; stale slices expire on their own.

* 🔎 fix: Resolve Pre-Strip Keys in Event-Driven Definitions and Reinspect Persisted Catalogs

The event-driven definitions loader now tries the stripped spelling of a persisted key when the exact lookup misses, keeping the persisted name so it matches the runtime instance, which stops legacy agents from failing initialization with expected tools unavailable. The registry storage schema version is bumped so followers rebuild persisted toolFunctions instead of republishing pre-strip definitions into the versioned catalog namespace.

The assistants heal also fails closed when a normalized-suffix reference lands on a contested server-name slot, since rewriting persisted data must not bind an ambiguous reference to the tie-break winner.

* 🛰️ fix: Reserve the Synthetic OAuth Name and Heal User-Owned Server Keys

A stripped remainder equal to oauth would make the client stream handlers treat a real tool call as a synthetic authentication prompt, so it joins the reserved remainders alongside the wildcard and pin markers.

The assistants heal now audits the FULL accessible server set on every run instead of operator config names only, since assistants reference user-owned servers whose catalogs the definitions loader already resolves; an unavailable audit still skips healing entirely.

* 🧬 fix: Verify Upstream Identity for Legacy Keys and Reserve Sibling Raw Names

Stripped results now reserve every sibling's raw name even when that sibling itself strips, so a stripped key can never shadow another tool's pre-rollout persisted references within the same snapshot. Every legacy fallback (runtime lookup, event-driven definitions, assistants heal) accepts a stripped-spelling match only when the entry's recorded serverToolName proves the same upstream tool, so a stale key for a removed tool degrades to unavailable instead of calling a different sibling.

To keep that identity visible to the heal, assistant tool definitions retain serverToolName and the controllers sanitize entries through toProviderToolDefinition at the provider submission boundary instead. The agent editor migrates pre-strip persisted ids the same identity-verified way, with the upstream name exposed on the MCP tools payload.

* 🧭 fix: Heal Wildcard Tool Options and Reserve the OAuth Namespace

Wildcard-expanded catalogs rename stripped tools without any agent.tools entry to preserve the spelling, so buildToolClassification now aliases persisted pre-strip tool_options keys onto the current instance names in place, identity-gated on the definition's recorded upstream name and never overriding an explicit entry. Both loading modes flow through it: instances carry mcpServerToolName from createToolInstance and event-driven definitions thread serverToolName from the catalog.

stripServerNamePrefix also reserves the entire oauth namespace rather than the exact name, since the client stream handlers classify every oauth-prefixed key as a synthetic authentication call.

* 🛡️ fix: Derive the Full Reserved Namespace and Heal Approval Policies

The reservation guard now covers every namespace consumers classify by prefix: the wildcard and server-pin markers alongside oauth, plus the server-scoped mcp_ pluginKey namespace that pre-strip keys could never enter. Stripping also never produces a key whose isActionTool classification differs from the raw key's, since a server whose normalized name contains _action_ would otherwise see a real MCP tool routed down the OpenAPI action path past MCP authorization.

Admin toolApproval globs written against upstream tool naming keep applying: pattern lists are healed at run wiring with the current names of tools whose pre-strip spelling matches, list-level so deny, ask, and allow precedence is unchanged and a non-matching deny can no longer fail open. The MCP tools wire type also declares serverToolName end to end.

* 🪪 fix: Alias Both Key Spellings for Approval Policies and Hook Matchers

Identity aliases are now collected once at tool classification, in both directions: a stripped instance aliases its pre-strip spelling and a legacy-named instance aliases its current catalog spelling, with the current name recorded on legacy matches by the runtime lookup and the event-driven definitions loader alike. The aliases ride the agent config through both loading modes, so approval pattern healing applies to deny rules written against either spelling, closing the bypass where a rule targeting the current name missed an unedited agent's legacy instance.

Programmatic approval hook matchers get the same treatment: each hook is additionally registered under an anchored exact-name pattern for tools whose other spelling its regex matches, keeping the admin's matcher semantics intact while argument, user, and tenant specific deny or ask decisions keep executing for renamed tools.

* 🔁 fix: Alias Tool Options in Both Spelling Directions

Options aliasing now consumes the same bidirectional alias pairs as policy healing and hook matchers, so options the editor migrated to the current catalog spelling still reach a legacy-named instance retained by an unedited agent.tools entry. The previous serverToolName-only derivation skipped exactly that case since the legacy key equals the instance name there.

* 🤝 fix: Reserve the Agent Handoff Namespace Before Stripping

The client renders any lc_transfer_to_ prefixed call as an agent handoff and the background and intent passes exclude such names, so a stripped remainder inside that namespace would misclassify a real upstream tool. It joins the mcp_ pluginKey namespace as a bare-prefix reservation, which pre-strip keys could never enter.

* ⚡ fix: Reuse the Loader's Server Snapshot and Index the Editor Catalog

getAssistantToolDefinitions now returns the accessible-server snapshot from the same merged registry read that resolved the catalogs, and the heal consumes it instead of repeating the app-config and registry round trips on the assistant write path; without a snapshot the heal still fetches and fails closed as before.

The agent editor's id migration uses a memoized tool_id map, so the per-key form heal does constant-time lookups instead of scanning the catalog per option.

---------

Co-authored-by: Danny Avila <danny@librechat.ai>
2026-08-21 14:30:29 -04:00
Danny Avila
8c14f03432
🗂️ feat: Scope Scheduled Chats to Chat Projects (#15056)
* 🗂️ feat: Scope Scheduled Chats to Chat Projects

Adds an optional chat-project destination to a schedule, plus the operator
config to require one — or to pin every scheduled run to a specific project.

Feature:
- `chatProjectId` on the schedule row, accepted on create/update, projected on
  the wire, and carried into the run's conversation through the durable trigger
  envelope's `run` context.
- `interface.schedules.requireProject` refuses schedules that are not filed
  under a project; `interface.schedules.projectId` pins every run to one
  project and implies the requirement.
- Dialog gains a project picker (required when configured, a read-only row when
  pinned); the card shows the destination and the new disabled reasons.

Invariants:
- ONE resolver (`resolveScheduleProjectId`) decides the destination for the
  write handler, the fire path, and the wire projection alike, and an operator
  pin OUTRANKS the stored id in all three. Tightening the config therefore
  redirects — or stops — existing schedules instead of grandfathering where
  their runs land. A pin implies `requireProject` for the same reason: without
  it, a row created before the pin would keep firing with no project at all.
- Create/fire precheck symmetry, mirroring `resolveAgentFireAccess`: a write
  this handler accepts is one the next fire also accepts. Any edit leaving a
  schedule ENABLED re-validates its EFFECTIVE (possibly stored) project, like
  the existing stored-agent and cadence-floor rechecks. A DISABLING edit skips
  the requirement, or a schedule auto-disabled for `project_required` could
  never be turned off.
- Fire-time enforcement auto-disables rather than filing runs loose, matching
  agent_deleted: new `project_required` (requirement raised after creation) and
  `project_deleted` (gone, or pinned to a project this owner does not have)
  reasons, both refused BEFORE a billed generation is dispatched, and both
  advancing so a schedule can never wedge on the occurrence.
- `computeCreateDigest` appends the field only when present, so a payload
  without a project digests byte-identically to one from before this change —
  a create retried across the upgrade still matches its own row instead of
  reading as key reuse.
- Project reads are scoped to the owner, so ownership and existence are the
  same lookup; a read ERROR propagates instead of failing closed, so a Mongo
  blip retries the fire rather than auto-disabling the schedule.

The trigger idempotency key hashes principal/event/target and never
`envelope.run`, so the added run field cannot destabilize delivery identity.

* 🗜️ fix: Keep the Schedule Dialog Inside Its Height Budget

The project picker landed as a new ROW in the schedule dialog, which broke the
e2e edit spec: `md:overflow-visible` turns off the template's scrolling from
`md` up, so the dialog's content must fit the viewport. The extra row pushed the
footer's Save button below a 720x1280 window, where Playwright reported a
visible, enabled button it could never click — 226 scroll-into-view retries and
a 2-minute timeout, on all three attempts.

Measured against `dev` at 1280x720 (Save button's bottom edge, viewport 720):
  dev              688   (32px slack)
  project row      ~790  (off-screen, CI failure)
  3-column row     704   (16px slack — half the budget spent)
  this commit      686   (34px slack, 2px better than dev)

The identity row is now three columns — name, agent, project — and its caption
moved out of the agent cell to sit full width beneath the row: at a third of the
dialog that sentence wraps an extra line, and the row is the tallest thing
competing for the budget. The caption is grouped with the row rather than left
to the form's own 4-unit rhythm, which spent more height on the gap than the
caption occupies.

The e2e spec now asserts the button is in the viewport before clicking it, so
the next field that overflows this dialog says so in one line instead of a
two-minute timeout on a visible element. FOLLOWUPS.md records what the planned
dialog controls (multi-day weekly, timezone, attachments) need first: give
`ControlCombobox` the `portalElement` prop `Dropdown` already has, portal the
popovers into the dialog content, and let the form scroll again.

* 🧹 fix: Address Codex Review on Scheduled Chat Project Scope

Four P2 findings, all real.

Unreachable clearing path (ScheduleDialog). The picker only held live projects, so
`com_ui_schedule_project_none` was a PLACEHOLDER — nothing selectable. Once a
schedule had a project the owner could never take it away, leaving the server's
`chatProjectId: null` path reachable only by API. The picker now carries a real
"No project" option whenever a project is optional, and omits it when one is
required, where there is nothing valid to select.

Placeholder shown for a real project (ScheduleDialog). A stored or pinned project
outside the first loaded page had no name in the paged map, and the combobox
renders its placeholder for an empty display value — telling the owner a scoped
schedule had no project. That one project is now read by id, with the raw id as a
last resort: a poor label, but an honest one.

Project policy skipped at the resume boundary (service.ts). `claimScheduleResume`
re-applied the schedules gate, the revision fence, the kill switch and
SCHEDULES:USE, but not the project policy this PR added. Approving a paused run
whose project was deleted — or whose owner now sits under a requirement or a pin
it no longer satisfies — billed a continuation the very next scheduled fire would
refuse and auto-disable the schedule for. The effective-project resolution now
runs there too, refused before the lease and the capacity slot so a policy refusal
costs nothing and leaves no state to unwind. NOTE: agent access and balance are
still not rechecked on resume; that gap predates this PR and is left alone.

Per-card project derivation (ScheduleCard). Every card ran the projects hook and
rebuilt the full option array, name map, and one icon element per project, to use
a single name — O(schedules x projects) per render and per project-list refresh.
The hook is split: `useChatProjectNames` (map only, for the panel, which resolves
every card's name once and passes it down) and `useChatProjectPicker` (options and
pagination, for the dialog's one combobox). The panel skips the query entirely
until some schedule actually has a scope.

Tests: four at the resume boundary (verified failing without the gate) and four in
the dialog spec. The picker selection in one existing test now goes through the
search field — the popover's VIRTUALIZED renderer sizes its window from a scroll
height jsdom always reports as 0, so with three options it materialized only two.
Full schedules e2e re-run green against the rebuilt client.

* 🎯 fix: Settle Project-Policy Refusals and Keep Create Retries Idempotent

Second Codex round, four P2s. Three were consequences of the resume gate added in
the previous commit, which was half-built: it admitted where it should not and
stranded the run where it refused.

Project policy moves from `claimScheduleResume` into `isScheduleLive`'s `policy`
branch. Both entry points consult that branch FIRST, and both already route its
refusal through abort-and-settle — so a policy stop now settles the occurrence
instead of answering a bare 409 while the job stays `requires_action`, the card
keeps reading "Needs approval", and every retry repeats the same 409 until expiry.
No change to resume.js: the existing branch does the work.

The rule is deliberately NARROW. It refuses only where no valid destination is
left — the requirement is on with nothing satisfying it, or the schedule's own
project is gone (which also unset it on the conversation). It does NOT refuse
because an operator's pin moved: the paused conversation cannot be rebound
(`chatProjectId` is excluded from the resume context and the continuation reuses
the same conversationId), so refusing would strand a pending approval over a
destination it can never reach, for a pin that governs only where the NEXT run
lands — which the fire path already redirects.

Create retries are idempotent again. Project policy had been applied BEFORE the
`clientRequestId` replay lookup, so a raised requirement, a deleted project, or a
moved pin could answer 400 for a create that already committed — pushing the
client to rotate its key and create a DUPLICATE schedule, the exact failure the
key exists to prevent. Policy now applies only to a genuinely new insert, and the
digest is computed from the CLIENT's payload rather than the resolved destination,
so today's policy can no longer re-digest a genuine retry into a mismatch.

An explicit `chatProjectId: null` under a pin is refused rather than silently
resolved to the pin. The payload contract defines `null` as clearing the scope;
answering 201 while filing under the pin reported success for the opposite of what
was asked. Only an OMITTED field takes the pin silently.

Tests: five on the policy branch (both refusals verified failing without it, plus
guards that a moved pin and a live project still admit) and two on the handlers
(the pinned explicit clear, and a committed create recovered by retry after the
policy tightened — verified answering 400 without the reordering).

* 🧭 fix: Converge the Stored Project on the Destination a Fire Resolved

Third Codex round, four P2s.

The root confusion behind the resume findings: an operator pin outranks the stored
id at fire time, `fireSchedule` sends the pin in the trigger envelope, and the row
keeps its old value. The row therefore LIED about where that occurrence's
conversation went, and every later re-validation — the resume boundary above all —
checked a project the conversation was never filed under. A schedule storing A,
pinned to B, with B later deleted and A still live, was admitted for resume into a
conversation that had just been unscoped.

Fixed at the source rather than at each reader: a fire that resolves a destination
different from the stored one writes it back, claim-token fenced like every other
worker-side write and deliberately WITHOUT a configRevision bump — this is the
server reconciling itself to policy, not an owner edit, and a bump would fence an
in-flight occurrence off its own run. Written only AFTER the destination validates,
so an unusable pin never lands in the row, and best-effort: the envelope already
carries the right destination, so a failed write costs accuracy on a later recheck,
never the run itself. The wire projection already reported the pin, so this also
stops the row and the UI disagreeing.

An explicit `chatProjectId: null` under a pin is now refused on the DISABLING edit
path too. The pin check and the requirement are independent rules, and folding them
together let `{enabled: false, chatProjectId: null}` skip the pin check entirely,
unset the row, and answer with a wire projection still naming the pin. Only the
requirement is waived for a disabling edit.

The dialog no longer requires a project for an edit that leaves a schedule DISABLED.
The server waives the requirement there precisely so a row auto-disabled for
`project_required` can still be renamed or tidied up; requiring it in the form made
that unreachable, and an owner with no projects could not edit the stopped schedule
at all.

FOLLOWUPS.md records the two residual gaps with their exact triggers: the sub-second
deletion race inside the resume claim window (which needs the effective project
persisted per OCCURRENCE plus a distinct policy conflict routed through
abort-and-settle), and the fact that convergence happens only when a schedule fires.

Tests: four on convergence (pin written, no write when unchanged, no write for a
destination that failed validation, fire survives a failed write), two on the
disabling-edit pin rules, two in the dialog. Schedules e2e re-run green.

* 🔑 fix: Keep an Explicit Project Clear Out of an Omitted Field's Digest

`computeCreateDigest` appended `chatProjectId` on `!= null`, so an OMITTED field and
an explicit `null` produced the same digest. Because the replay lookup and
`matchesCreateIntent` deliberately run before project policy, a request could reuse a
pinned create's `clientRequestId` while explicitly sending `chatProjectId: null` and
receive 201 describing the pinned row — success reported for the opposite of what it
asked, and the pinned-clear refusal the normal create path applies never reached.

Now `!== undefined`: an omitted field still digests byte-identically to a payload from
before project scope existed, so a create in flight across the upgrade still matches
its own row, while an explicit clear is a distinct intent and digests differently. A
pre-scope client never sent the field at all, so nothing legacy can carry an explicit
null.

* 📍 fix: Validate a Paused Run Against the Project Its Own Occurrence Used

The schedule-wide convergence from the previous commit was not enough, and the
reason is the single-active run index: it covers `status: 'started'` only, so a
PAUSED run does not block the next occurrence. While run 1 sat paused in project A,
a pin move plus one later fire rewrote the schedule row to B — and the resume
policy then validated B while run 1's conversation was still filed under A. Delete
A and the continuation was admitted into a conversation that had just been unscoped.
That window lasts as long as the pause, not the sub-second race the previous commit
documented.

The reservation now records the destination THIS occurrence used, and
`isScheduleLive` validates that record when given the occurrence's `scheduledFor` —
which `resume.js` already reads two lines above the call. No new conflict type and
no settlement-path surgery: the refusal rides the abort-and-settle branch that check
already has.

An ABSENT record falls back to the schedule-level resolution rather than reading as
unscoped. A pre-scope occurrence, or one whose row is gone, must never be treated as
evidence to stop a run — the fallback keeps legacy paused runs behaving exactly as
they do today.

Schedule-wide convergence stays: it keeps the row honest for the UI and for every
check that has no occurrence in hand.

FOLLOWUPS.md now describes the one remaining gap accurately — a deletion inside the
claim window, which needs a distinct policy conflict routed through abort-and-settle
rather than the bare 409 an `inactive` conflict produces.

Tests: three on occurrence-vs-row precedence (the decisive one verified failing
without the lookup), two on what the reservation records, and the resume controller
spec now pins `scheduledFor` in the policy call. Schedules e2e re-run green.

* 🏷️ fix: Tell a Deliberately Unscoped Occurrence From an Unrecorded One

The occurrence fallback added in the previous commit conflated two different
absences. A post-upgrade run that deliberately went unscoped omitted the field
exactly like a row written before the field existed, so both took the fallback —
and a paused unscoped run was then validated against the schedule's CURRENT
project. Under a requirement or a pin added while it sat paused, that admitted a
billed continuation into a conversation satisfying no present policy.

The reservation now ALWAYS records its decision, `null` for unscoped, and the read
reports `recorded` from key PRESENCE rather than truthiness. Only an unknown record
— a pre-scope row, or no row at all — falls back to the schedule-level resolution;
a recorded null is the genuinely unscoped occurrence it says it is, and is refused
once a project becomes required.

The distinction rests entirely on a stored `null` surviving as a present key while a
never-written field stays absent, so that is asserted against real Mongo rather than
assumed: if it ever stopped holding, unscoped runs would silently start being
validated against the schedule's current project again.

Tests: two against mongodb-memory-server (recorded null vs never-written vs missing
row), plus refusal of a recorded-unscoped occurrence under a new requirement and the
preserved fallback for a pre-scope one. Schedules e2e green.

* 🔁 fix: Validate an Initial Scheduled Start Against Its Own Occurrence

The initial-start policy check in `request.js` called `isScheduleLive(..., { policy:
true })` without `scheduledFor`, so it fell back to the schedule-level resolution
even though the run row already carries the occurrence's recorded scope. An
occurrence reserved unscoped, with a pin introduced while its loopback request sat
queued, was therefore admitted against the new pin — producing a billed unscoped
conversation under a requirement it does not satisfy, from an envelope already built
without a project.

`scheduledFor` was already in scope there. Passing it makes the initial start and the
resume validate the same way: against the destination the occurrence itself recorded.
2026-08-21 11:09:04 -04:00
Danny Avila
a5cb041f47
🕊️ feat: Yield to Subagent Completion Wakeups (#15066)
* 🕊️ feat: yield to subagent completion wakeups

* ⚡ fix: bound wakeup status guidance
2026-08-21 01:45:42 -04:00