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994 commits

Author SHA1 Message Date
Danny Avila
fb8ae881cf
⏱️ feat: Show Run-Step Durations On Tool Cards (#14892)
* ⏱️ feat: Show Run-Step Durations On Tool Cards

Surfaces how long each tool call took, derived from the `closed_at` /
`created_at` pair already carried by `on_run_step_closed` — the same event
#14871 and #14873 use for the terminal status. No new event, no new SDK
surface.

The duration is stamped onto the content part at the same three sites as
`runStepStatus`, so it survives a reload and a resumable reconnect rather
than living only on the live React message:

- `callbacks.js`, on the aggregated part before the event is forwarded
- `RedisJobStore`, in the host-authored replay reconstruction branch
- `useStepHandler`, on the live message

Rendering lands in the shared `ProgressText`, which nine tool cards already
use, rather than in each card: one place decides whether a duration is shown
and how it reads, and the cards only forward the number. That keeps this from
adding a tenth independent state derivation to a component family whose
label/announcement/progress split is already the subject of AI-1810.

The value is deliberately absent rather than zero whenever it would be a
guess — no `created_at`, non-finite input, or a negative elapsed time from
two clocks that disagree, which is now reachable because a step can be opened
in one process and closed in another after a checkpoint resume. Sub-second
durations are suppressed as noise, and it renders only on a settled,
non-error card, where the slot is not already carrying the cancelled icon or
the error suffix.

For assistive technology the compact form (`3.5s`) is hidden and paired with
a spoken equivalent ("took 3.5 seconds"), both inside the button, so the
accessible name carries the duration without an `aria-live` region
re-announcing it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🎨 style: Sort Imports In Touched Files

The import-sort gate runs against the files a PR changes, so pre-existing
drift in `ProgressText.tsx` and `RedisJobStore.ts` surfaced on this branch.
Both were already unsorted on `dev`; this is the sorter's output, with no
semantic change.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🐛 fix: Accept Partial Timestamps In Run-Step Duration Helper

`getReportableRunStepDurationMs` declared its parameter as
`Pick<RunStepClosedEvent, 'created_at' | 'closed_at'>`, where `closed_at` is
required. That contradicted the function's own purpose: every guard inside it
exists precisely to handle stamps that may be missing.

The Redis replay branch reconstructs closures from persisted JSON and holds
nothing stronger than "might be a number", so it failed to typecheck against
the narrower signature.

Widened to an exported `RunStepTimestamps` shape with both stamps optional,
rather than asserting at the call site — an assertion would move the decision
about what is trustworthy somewhere it cannot be enforced, which is the thing
the helper exists to centralize. Callers holding a fully-typed event still
pass, since a required field satisfies an optional one.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🐛 fix: Suppress Duration When Failure Arrives As errorSuffix Alone

At every call site `error` carries cancellation while failure travels
through `errorSuffix` with `error` false, so gating the duration on
`!error` alone rendered "· 3.5s" beside "· failed" — and announced it.
The gate now checks both terminal-failure channels.

The original test pinned only the `error: true` path, which is why this
survived; the failed-via-suffix path is now pinned separately, both the
visible and the announced half.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🧩 refactor: Persist Raw Run-Step Durations, Threshold At Render Only

The three stamp sites filtered through the 1-second reportability
threshold before persisting, baking a presentation rule into stored
data: a 900ms step stored nothing, making "fast" indistinguishable from
"not derivable" and unrecoverable if the display rule ever changes.

Stamp sites now persist the raw `getRunStepDurationMs` value — absent
only when genuinely not derivable — and the renderer alone decides what
is worth showing, which `ProgressText` already did. Rendering is
unchanged. `getReportableRunStepDurationMs` is removed; it existed only
to serve the write-time filter, and a test now pins that sub-threshold
durations survive to storage.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🐛 fix: Suppress Duration On Backgrounded Bash And Code Cards

A backgrounded call's run step closes when dispatch returns the handle,
so the stamped duration is the dispatch time. Rendering it beside
"Running/Finished in background" misstated a detached task's runtime as
seconds — and violated the "settled card only" rule, since the card is
still tracking the detached run. Scope is exactly the two cards that
parse background handles.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🌍 fix: Format The Sub-10s Decimal For The Active Locale

The fractional seconds value was interpolated as a raw JS number, which
hardcodes the en-US decimal point into every language — "1.4s" where
the locale writes "1,4 s" — and translators cannot fix a number
formatted in code. The value is now formatted via Intl.NumberFormat
with i18n.language, following MessageTimestamp's pattern of threading
the language into the util; plural-key selection stays on the numeric
value. A malformed language tag falls back to the plain number.

Also documents the two accepted limits of the derivation, so they read
as decisions rather than oversights: positive clock skew is
undetectable from a single stamp pair, and the value is wall-clock
elapsed, so a step held open across a suspension (checkpoint resume,
HITL approval wait) includes that time.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🐛 fix: Persist A Durable `backgrounded` Marker Through Harvest; Localize Minute Digits

Codex round 3, both findings confirmed.

**Background origin survived only as transient state.** The dispatch
handle in `tool_call.output` and the live status-marker attachment are
both gone once the harvester patches the settled task's stdout over the
handle — so the round-2 suppression (`backgroundHandle == null`) came
back on after harvest or reload, showing dispatch time as the task's
runtime. Following the same rule as e4bd15d (persist facts, decide at
render): the harvest patch now stamps `backgrounded: true` onto the
tool call in the same atomic write that erases the handle — on the heal
path too, which re-applies over full-row saves that reverted the part.
The cards gate on handle-or-marker; the dispatch duration itself stays
stored.

**Minute-branch digits bypassed locale formatting.** The seconds branch
went through Intl.NumberFormat while minutes interpolated raw numbers,
so Arabic/Persian locales flipped to ASCII digits above one minute. All
interpolated values now flow through the (renamed) formatDurationValue;
an ar-EG test pins the localized digits.

data-schemas cannot be installed in this environment (same npm ci 403 as
packages/api), so message.ts/harvest.ts are syntax-checked with
resolution off and otherwise verified by review; CI runs their real
typecheck and suites.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🧪 test: Assert The `markBackgrounded` Stamp In Harvest Expectations

The successful-harvest test's exact `toHaveBeenCalledWith` object did
not include the newly forwarded `markBackgrounded`, so the API suite
would fail on it. All three harvest-call expectations now assert
`markBackgrounded: true` — the exact-object one of necessity, the two
`objectContaining` ones deliberately, since the durable stamp (on the
best-effort file-failure path and the reapply heal alike) is now part
of the behavior under test.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🎨 style: Wrap Harvest Spec Expectation Per Prettier

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-08-16 16:17:02 -04:00
Danny Avila
bce93f9c55
🎯 refactor: Infer Agents Endpoint for Model Specs Naming an Agent (#14889)
* 🎯 fix: Infer Agents Endpoint for Model Specs Naming an Agent

A model spec whose preset names an `agent_id` but omits `endpoint` was
unusable. `isModelSpecEndpointMatch` compares the request's endpoint to
`preset.endpoint` by strict equality, so an undefined endpoint matched
nothing and every request selecting the spec was rejected with a bare
`Model spec mismatch` — an error naming neither the spec nor the missing
field.

The selector had the matching half of the same gap: `handleSelectSpec`
read `preset.endpoint` directly, so it sent no endpoint and skipped
assigning `agent_id` to `model`. Fixing only the server would leave the
request malformed, so the resolution is shared between both.

- Add `resolveModelSpecEndpoint` to `librechat-data-provider`, inferring
  the agents endpoint when a preset names an agent and none is set. An
  explicit `endpoint` always wins, so configured specs are unaffected.
- Use it for endpoint matching and in the selector, so the menu and the
  request pipeline resolve a spec identically.

* 🔁 refactor: Materialize Inferred Spec Endpoints at Config Load

The review showed the lazy-resolver approach was unsound end to end:
config validation rejected an endpoint-less spec before the resolver
could ever run (`tPresetSchema` requires the `endpoint` key), and the
resolver was applied at 2 of ~8 read sites, leaving selection handlers,
startup presets, access filters, and provider-key reachability reading
the raw preset.

Materialize once at the boundary instead:

- `tModelSpecPresetSchema` now makes `endpoint` optional (`nullish`).
  This is barely a widening — `endpoint: null` already validated — and
  only for model-spec presets; `tPresetSchema` is untouched.
- `materializeModelSpecEndpoints` writes each spec's resolved endpoint
  back onto its preset. `createAppConfigService` applies it at both
  effective-config assembly points — YAML base load and DB-override
  merge — so admin-panel specs stored in override documents are covered.
  Identity-preserving, so cached configs see no new references when
  nothing needs filling in.
- Every consumer now reads complete specs; the client's lazy resolve in
  `handleSelectSpec` is reverted to a raw read. `getModelSpecPreset` and
  the two hand-rolled preset constructions resolve the endpoint
  explicitly, which the narrowed preset type now enforces at compile
  time for any `TPreset`-shaped destination.
- `isModelSpecEndpointMatch` keeps the resolver as request-time defense.

* 🩹 fix: Materialize Spec Endpoints Before the YAML Missing-Endpoint Guard

`processModelSpecs` warns and skips any spec whose preset lacks an
endpoint, and it runs inside `loadBaseConfig` — so the previous commit's
materialization received a YAML list from which the inferable spec had
already been dropped. Only DB-override specs (merged after the guard)
actually benefited.

- Materialize at the entry of `processModelSpecs`, so inference happens
  before the guard and YAML agent specs survive it. The guard keeps
  skipping genuinely endpoint-less specs. The `createAppConfigService`
  calls stay: the base-path one guards alternate `loadBaseConfig`
  implementations, the merged-path one covers override documents, and
  both are identity-preserving no-ops when specs are already complete.
- Constrain the widened schema: omitting `endpoint` is only legal when
  the preset names an `agent_id`. A preset with neither validated as a
  hard error before the key became optional, and silently accepting it
  would trade that startup-time error for a dead spec. An explicit
  `endpoint: null` (valid before this PR) keeps validating.

* 🩹 fix: Infer Only From Non-Empty Agent IDs, Never Over Explicit Null

Two edge cases in the inference contract:

- `agent_id: ''` (what a form-backed writer persists for an untouched
  field) passed the nullish checks, validating and materializing a spec
  that names no agent. Both the refinement and the resolver now require
  a non-empty id, so such config fails validation loudly instead of
  producing a selectable spec that cannot work.
- `endpoint: null` alongside an `agent_id` was treated as inferable,
  silently activating a spec that validated — and was skipped — before
  this PR. An explicit null is a statement, not an omission: the
  resolver now infers only when the key is absent, preserving prior
  behavior for previously valid configs.
2026-08-16 11:04:52 -04:00
Danny Avila
06bf324cf0
🛤️ feat: Per-Agent Code Execution Routing With Stateful Session Scopes (#14848)
* feat: route code execution per agent profile

* chore: sort execution profile imports

* test: preserve stateful environment literal types

* fix: isolate stateful code environments by user

* fix: preserve per-agent code routing end to end

* fix: route code priming by execution profile

* fix: isolate code profile lifecycle state

* fix: preserve mixed-profile code resources

* fix: complete stateful skill routing
2026-08-16 09:42:15 -04:00
Danny Avila
d411512a98
⬆️ chore: Bump @librechat/agents to v3.6.0 (#14890)
* ⬆️ chore: Bump `@librechat/agents` to v3.6.0

Bumps the pin in `api` and `packages/api` from `^3.5.1` to `^3.6.0`. The
caret on `^3.5.1` cannot cross the minor, so both manifests and the lockfile
need the explicit bump.

v3.6.0 contains three changes over v3.5.1, all additive:

- `fix: Close Subagent Child-Graph Run Steps` — subagent child graphs run via
  `workflow.invoke()` outside `Run.processStream`, so the terminal sweep never
  reached their steps. They now close on both the success and error paths,
  which is what makes `on_run_step_closed` reliable for subagent tool cards.
- `fix: Restore Run Steps Across Process Resumes` — open run-step lifecycle
  state is now persisted in LangGraph checkpoints, so a step opened by one
  process closes correctly after a resume on another.
- `feat: route code execution per agent profile` — new optional
  `codeSessionKey` partition for code-session ids and file refs.

No breaking changes: every new field on the public type surface is optional,
and the package's own dependency set is unchanged between the two versions
(verified against the registry), so the lockfile diff is limited to the
`@librechat/agents` entry itself.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🔒 chore: Sync `bun.lock` with the agents v3.6.0 bump

`bun.lock` still recorded both workspace requirements and the resolved
package as `@librechat/agents@3.5.1`, which no longer satisfies `^3.6.0`, so
`bun install --frozen-lockfile` would reject the committed state.

`bun install --lockfile-only` cannot run in this environment: bun stores no
integrity for the `xlsx` URL dependency and therefore re-fetches
`cdn.sheetjs.com`, which the sandbox network policy denies (403 on CONNECT).
The entry was updated directly instead, which is exact here because the
package's dependency graph does not move between the two versions: its
`dependencies`, `peerDependencies` and `optionalPeers` at 3.6.0 are identical
to 3.5.1 (checked against the registry), so only the version, the resolution
id and the integrity hash change. The integrity matches the one npm resolved
into `package-lock.json`, and the two existing
`@librechat/agents/*` hoisting overrides stay valid because the dependency
set they resolve is unchanged.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-08-16 09:15:35 -04:00
Danny Avila
eb3b353712
📡 fix: Publish App-Level MCP Tool Catalogs Without a Reserved Revision (#14858)
* 📡 fix: Publish App-Level MCP Tool Catalogs Without a Reserved Revision

Shared MCP servers advertised no tools to agents, so every turn failed with
"configured to use MCP tools, but none are available" (#14857).

`replaceAppServerTools` returned false whenever a publication carried no
`publicationRevision`, but only `refreshChangedTools` reserves one. Every other
app-level publisher — the first-connect snapshot, reinitialization, on-demand
catalog reads, the retained-catalog restore — was silently dropped. The agent
path fails closed on that drop: the skipped write returns null, so reinitialize
yields no tools and the turn 503s.

Startup hid it. `connectAppServers()` defers the initial refresh and calls
`refreshToolList()` itself, which does reserve, so a boot that reaches its MCP
servers looks healthy. Only a lazily created app connection — the server not yet
up when LibreChat boots, a dropped connection, a cold cache — takes the
unreserved path.

`ConnectionsRepository` now reserves before its own `tools/list`, matching the
list_changed path; a failed reservation publishes unordered rather than failing
the connection. Publishers with no pre-fetch reservation point have already
fetched by the time they reach the cache, so they take the next revision at write
time instead of being discarded. `mergeAppTools` still publishes at revision 0 and
stays deferential to a live catalog.

* 📡 fix: Bind App Catalog Ordering to the Fetch That Produced It

Addresses review feedback on the previous commit: allocating a revision at
publish time lets a slow `tools/list` of an old catalog outrank a newer one that
reserved after it started, and it would let the retained-catalog restore — which
republishes deliberately pre-mutation data — outrank a live catalog.

Ordering now travels with the data. `fetchToolsSnapshot` reserves before its
first page and returns the ticket on the snapshot, so every app-level publisher
reads the revision belonging to the read it is publishing rather than one
allocated at an unrelated moment. `fetchOrderedToolsSnapshot` carries the
refresh's revision when it defers to one, since that is whose catalog it returns.

With the reservation at the single point where app-level tools are read, no
publisher can forget it, so `replaceAppServerTools` goes back to refusing an
unordered write: a publication that lost its ticket fetched at an unknown time
and cannot be ordered.

A failed reservation is reported as `orderingUnavailable` rather than swallowed,
which keeps the list_changed path retrying instead of publishing a catalog that
would be silently dropped, and leaves inspection unaffected by a transient cache
outage.

`MCPServerInspector.getToolFunctions` becomes `getToolCatalog` and returns the
revision with the tools, so there is no variant that quietly discards ordering.

* 📡 fix: Retry an Empty App Catalog That Could Not Reserve Ordering

Review follow-up. The no-tools-capability branch destructured the reservation
result and dropped `orderingUnavailable`, publishing without a revision when the
revision store was transiently unavailable. That write is rejected in silence,
and unlike the snapshot branch this one returned without reaching
`refreshToolList()`, so whatever the server last advertised stayed in place until
the connection was recreated or the cache expired.

Both branches now route an unreservable catalog through the same retry path.

* 📡 fix: Serve Tools Whose Shared Catalog Write Could Not Be Ordered

Review follow-up. Only the shared catalog write needs ordering; the tools
themselves were just read from the server and are correct to serve. Discarding
them because the write could not be ordered is what turns a cache failure into a
server that appears to have no tools at all, which is the reported symptom.

`updateMCPServerTools` now returns the tools it built when the publication has no
reserved revision, instead of null. A superseded write still discards — there
another replica holds something newer.

Reinitialization also asks the connection to republish under backoff when its
snapshot could not reserve ordering, so the shared catalog does not stay cold
until something else triggers a refresh.

* 📡 fix: Surface a Discarded App Catalog Instead of Debug-Logging It

#14857 went a release without a diagnostic because the only trace of a dropped
app-level catalog was a debug line no deployment runs. Operators saw agents fail
every turn with nothing in the logs to explain it, and the reporter had to read
the source to find the cause.

A publication discarded because it cannot be addressed or ordered means this
server's tools are unavailable to every agent that selected them, and serving an
unpublished catalog means every request re-fetches it. Both are warnings now. A
superseded write stays at debug: concurrent replicas produce it routinely and the
winner already holds newer tools.

Tests pin the level, so a later refactor cannot quietly make the failure silent
again.

* 🧪 test: Pin the Reinitialize Path's Catalog Ordering

Reinitialization is the path an agent falls back to when the shared catalog is
cold, so it is where #14857 surfaced as "configured to use MCP tools, but none
are available". Nothing pinned that it forwards the ordering its snapshot was
fetched with, nor that it asks the connection to republish a catalog it could
not order.

Both assertions fail against the pre-fix source.
2026-08-15 12:48:23 -04:00
Anubhav Anand
a2ad0aa0c8
🤐 feat: Allow Promptless Sends When Files Are Attached (#13717)
*  feat: Allow sending file attachments without a text message

When an agent asks the user to upload a document, the user could attach
the file but still had to type a placeholder message ("OK", "Here is
the file") before the send button enabled and the submit guard let the
message through.

Attachments now count as submittable content:

- New isSubmittableMessage(text, fileCount) util: non-whitespace text
  OR at least one attached file.
- ask() in useChatFunctions uses it instead of bailing on empty text,
  so an empty draft with attached files submits.
- SendButton receives the attached file count and enables accordingly.
- ChatForm only marks the text field as required when no files are
  attached, so react-hook-form validation no longer blocks handleSubmit.

Submitting an empty draft with no attachments is still rejected at all
three layers.

Fixes #13646

* Address review: support replayed file-only turns + drop empty vision text

- ask(): count replayed attachments (overrideFiles) in the submittable
  check and skip it entirely for regenerate, so a file-only message can
  be regenerated or saved-and-resubmitted instead of being rejected as
  empty.
- formatVisionMessage(): omit the text content part when the message text
  is empty. Anthropic rejects empty text content blocks with HTTP 400,
  and an empty block adds nothing for other providers; image-only sends
  now format cleanly. Added formatMessages tests for with-text and
  image-only (Anthropic + other) cases.

* Address review: keep attachment-only turns valid for providers, answer mode, and titles

- formatMessage: substitute minimal text when a user turn carries files but no
  inline content, so Anthropic does not reject an empty user message for RAG or
  code-environment attachments.
- assistants chatV1: send the same stand-in for attachment-only Threads
  messages, which reject an empty body. The persisted message keeps empty text.
- ChatForm: attachments no longer make an empty draft submittable in answer
  mode, where submitText consumes the click without answering or sending.
- agents request: seed title generation from attachment filenames when the turn
  has no text, so immediate-mode titles are not invented from an empty string.
- useChatFunctions.regenerate.spec: mock the utils barrel over the real module
  so new exports resolve.

* Cover the agents path for attachment-only turns

AgentClient formats its payload with the SDK's formatMessage, not the local
one, so the earlier guard missed the endpoint the feature actually targets: an
attachment-only turn still reached Anthropic as an empty user message. Apply
the same stand-in after the file-context and quote merges, so a turn that
already gained inline content is untouched.

* Carry filenames on freshly attached files

The fresh-file submission mapping copied only file_id, filepath, type, and
dimensions, so the attachment-only title fallback read an undefined filename
and produced nothing. Include filename, and cover it with a test that submits
an empty draft with one attachment.

* Address review: cover assistants v2, fresh agent attachments, editor, and title fallback

- agents client: the current turn has no files during buildMessages, so read
  the resolved attachments from message_file_map instead. The previous guard
  only ever fired for persisted historical turns.
- assistants chatV2: the default assistants endpoint routes here, so it needs
  the same stand-in body chatV1 got.
- assistants title: fall back to filenames, then the response, and keep the
  default title rather than saving an empty one.
- EditMessage: retained attachments make an empty edit submittable, matching
  the composer, so the overrideFiles replay path is reachable from the UI.

---------

Co-authored-by: Marco Beretta <81851188+berry-13@users.noreply.github.com>
2026-08-15 12:47:31 -04:00
Danny Avila
88747f0ad8
🩺 fix: Render Stopped Run Steps From Explicit Status (#14871)
* 🩺 fix: Render Stopped Run Steps From Explicit Status

Tool calls decided "still running" vs "stopped" with a whole-message
heuristic:

  const cancelled = !isSubmitting && progress < 1 && !hasError;

That inference cannot tell which step actually stopped. An aborted step
keeps spinning while `isSubmitting` is still true, and when submitting
ends, every unfinished part flips to "Cancelled" at once regardless of
which one died.

`@librechat/agents` v3.4.6+ emits `on_run_step_closed`, a terminal
per-step signal carrying `status` and timestamps — including for steps
swept at end-of-run because the caller aborted. The pinned 3.5.1 already
ships it; nothing consumed it.

- `StepEvents.ON_RUN_STEP_CLOSED` plus `RunStepClosedEvent` /
  `RunStepStatus` types mirroring the SDK payload.
- `PartMetadata.runStepStatus` — a dedicated field, since `status` is
  already claimed by activity-label and question-form parts.
- Server handler forwards the event without the visibility gating the
  other step handlers apply: a step whose open reached the client must
  get its close, or the client is left inferring again.
- `useStepHandler` writes the terminal status onto the tool call part.
- Both decision points (`ToolCall`, the shared `useToolCallState`) prefer
  explicit status, keeping the heuristic as fallback for messages saved
  before this and endpoints that do not emit the event.

Threaded through the five cards sharing `useToolCallState`.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🩹 fix: Address Codex Review On Run Step Closure Rendering

- Persist the terminal status server-side. The handler emitted the
  closure without folding it into `contentParts`, so the status existed
  only on the live React message: a reload or resumable reconnect
  dropped it and fell back to the very heuristic this fixes. Now stamped
  onto the aggregated tool-call part (via `stepMap`, falling back to the
  event's own index) before forwarding.

- Honor terminal status independently of output parsing. Gating on
  `hasError` meant a `failed` step with unparseable output rendered as
  "cancelled", while a `failed`/`cancelled` step whose output did parse
  as an error was not terminal at all and shimmered indefinitely when no
  completion event arrived. A closed step now forces progress complete
  and reports `failed` as an error state on its own authority.

- Pass the status to the second `BashCall` branch, which rendered the
  same updated component without it.

- Reuse `Agents.RunStepClosedStatus` in `PartMetadata` instead of
  redeclaring the union, so a future SDK status cannot diverge between
  the event and the persisted part.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

*  fix: Replay Closed Status On Redis Resume, Announce Failures

- Apply closure events during Redis reconstruction. The stamp added in
  the previous commit mutates only the originating process's in-memory
  `contentParts`; a resumable reconnect landing on another replica
  rebuilds from `RedisJobStore.getContentParts`, whose allowlist omits
  `on_run_step_closed`. The status was therefore absent from the sync
  snapshot and, being snapshot-covered, never redelivered as pending —
  so multi-replica resume fell back to the whole-message heuristic.
  Handled as a host-authored event alongside `on_steer_applied` and
  `on_activity_label`, since the SDK aggregator has no notion of it.

- Announce terminal failures in the live region. Forcing terminal
  progress for a closed step meant a `failed` tool reached the
  `aria-live` region through `getFinishedText()`, which only special-
  cased cancellation and otherwise announced "completed function" —
  telling screen-reader users the opposite of what the card showed. A
  regression introduced by the previous commit; error states now
  announce failure before any completion string.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

* 🎯 fix: Resolve Closed Steps By ID, Never By Index

The steer and HITL offset wrappers clone and shift only `ON_RUN_STEP`
and `ON_AGENT_UPDATE`; every other event passes through untouched. A
stored `on_run_step_closed` therefore carries the SDK's unshifted index,
while the part it belongs to was rebuilt at the shifted one. Any run
containing a steer insertion or HITL resume would stamp the status onto
an earlier tool card, or none — leaving the real card on the fallback
heuristic while mislabeling a different one.

- Redis reconstruction builds a step ID -> index map from the replayed
  `on_run_step` payloads (which carry the shifted index) and resolves
  closures against it, mirroring what the live callback does via
  `stepMap`.

- The live handler drops its `?? data.index` fallback for the same
  reason. Skipping is the safe failure: a missing status degrades to the
  old heuristic, whereas a misplaced one actively mislabels the wrong
  card.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014vLhxCFMYkCaTsoFTiAjJ5

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-08-15 10:14:16 -04:00
Danny Avila
cd4511038d
🚏 feat: Central Trace Destination Opt-Out for Langfuse (#14838)
* feat(langfuse): let callers opt out of the central trace destination

Adds `centralTraceExportEnabled` to the score-destination options and threads
it through `getScoreDestinations`, `getLangfuseTraceDestinationIds` and
`getLangfuseTraceMessageFields`.

Deployments that route traces per tenant may want a given turn's spans to reach
only the tenant destination — for example when central export is a per-tenant
setting rather than a deployment-wide one. Today the central project is included
whenever env credentials exist, with no way for a caller to decline it for a
single trace.

Defaults to `true` everywhere, so existing callers are unaffected: the option is
additive and every current call site resolves exactly as before. The three
public helpers gain an optional trailing parameter and nothing else.

While here, `getScoreDestinations` destructures its options with defaults
instead of repeating `options?.waitForCentralProjectId !== false` at both call
sites, which is what made adding a second flag awkward.

Verified: no new tsc errors (one pre-existing cacheFactory error is unchanged),
99 langfuse tests pass, ESLint and Prettier clean.

* fix(langfuse): keep the central opt-out intact when destinations resolve

Addresses two review findings on the new `centralTraceExportEnabled` option.
Both are cases where opting out of central export was silently discarded by
destination resolution, letting later feedback reach a project the trace never
went to.

1. Non-fanout deployments with no central env credentials still returned the
   configured connection, because only the central-credential branch was gated.
   `resolveLangfuseExportPlan` reports `disabled` for that shape — without a
   fanout route there is nowhere for a central-suppressed trace to go — so
   return no destinations and match it.

2. `getLangfuseTraceDestinationIds` returned `undefined` whenever any
   destination lacked an id, and `sendFeedbackScore` reads `undefined` as
   unrestricted. A tenant destination has no id when its optional `projectId`
   is unset, so a suppressed-central trace could resolve back to the central
   project at feedback time. Fail closed with an empty list, which stays
   restricted, instead.

Both paths now have regression tests, each verified to fail without the
corresponding change: the first returned 3 destination ids, the second returned
`undefined`.

* fix(langfuse): carry the central opt-out into the feedback path

`getLangfuseTraceDestinationIds` returns `undefined` when an eligible
destination has no stable id, which a tenant route hits whenever the
optional `langfuse.projectId` is unset. `sendFeedbackScore` read that as
"unrestricted" and re-resolved destinations with central export enabled,
so a suppressed-central trace still drew central feedback.

Persisting an empty list instead only traded the leak for a drop: the
destination filter rejects every id-less destination, discarding ratings
the tenant should receive. The id list restricts feedback to destinations
that survived reconfiguration; it cannot also encode deployment policy.

Thread `centralTraceExportEnabled` through `sendFeedbackScore` so the
policy is evaluated the same way at trace time and feedback time, and
restore `undefined` for unidentifiable destinations.
2026-08-15 08:41:18 -04:00
Danny Avila
e1178d3c65
🏘️ fix: Scope OpenID User Cache Keys to Signed User Identity (#14837)
* fix(auth): scope OpenID user cache by tenant

* fix(auth): preserve pre-auth cache scope

* fix(auth): type OpenID reuse secret
2026-08-14 15:51:18 -04:00
Danny Avila
c06fbff475
📦 chore: bump @librechat/agents to v3.5.1 (#14830)
* 📦 chore: bump `@librechat/agents` to v3.5.0

* chore: bump agents sdk to v3.5.1
2026-08-14 11:14:07 -04:00
Ravi Kumar L
bc6392d05b
🪢 fix(langfuse): mark provider-backed agent traces (#14833)
* fix(langfuse): mark provider-backed agent traces

* fix(langfuse): mark stored response traces

* test(langfuse): isolate provider marker setup
2026-08-14 10:28:25 -04:00
Danny Avila
0ce4c3374b
⏲️ test: Give ServerConfigsDB Mongo Hooks a 60s Timeout Budget (#14831)
`beforeAll` boots a real mongod via MongoMemoryServer, resets the module
registry and re-imports data-schemas, ServerConfigsDB and the MCP OAuth handler
before a single test runs. That exceeds the 15s global `testTimeout` once the
runner is busy: the suite finishes in ~4.5s on its own but has been observed at
16.8s under a loaded `@librechat/api` shard, failing every test in the file with
"Exceeded timeout of 15000 ms for a hook".

Give both mongo hooks an explicit 60s budget, matching
`checkpointer.integration.spec.ts`, the other MongoMemoryServer suite that
already opts out of the global default. `afterAll` gets the same treatment since
`mongoServer.stop()` is subject to the same contention.

No behaviour change — the timeout only bounds setup, and the suite still
completes well inside it.
2026-08-14 09:55:42 -04:00
Danny Avila
eaef87fa26
🚀 chore: Prepare v0.8.8-rc1 (#14394)
* 🚀 chore: Prepare v0.8.8-rc1 release

* 📚 docs: Complete v0.8.8-rc1 operator references

* 📚 docs: Mark stateful sessions experimental

* 📚 docs: Clarify background code capability

* 📚 docs: Refresh v0.8.8-rc1 operator guidance

* 📚 docs: Highlight v0.8.8-rc1 features in README

* 📦 chore: Bump publishable packages again

* 📚 docs: Add streaming question progress

* 📦 chore: Bump publishable packages again

* 📚 docs: Refresh v0.8.8-rc1 release highlights

* 📦 chore: Bump publishable packages again

* 📚 docs: Refresh v0.8.8-rc1 release guidance

* 📦 chore: Bump publishable packages again

* 📚 docs: Highlight batched Agent questions

* 📦 chore: Bump publishable packages again

* 📦 chore: Bump publishable packages again

* 📦 chore: Bump publishable packages again

* 📦 chore: Refresh v0.8.8-rc1 package versions

* 📦 chore: Refresh v0.8.8-rc1 package versions

* 📦 chore: Refresh v0.8.8-rc1 package versions

* 📄 docs: Note PowerPoint template support

* 📦 chore: Refresh v0.8.8-rc1 package versions

* 📄 docs: Note latest provider and file support
2026-08-14 03:24:59 -04:00
Danny Avila
2f0cd2eb75
🔌 chore: Bump the MCP SDK to 1.30.0 and Parse Content-Type Instead of Searching It (#14820)
`@modelcontextprotocol/sdk@1.30.0` is a small maintenance release on the 1.x line
(upstream's active line is now the 2.0.0 scoped packages). The range was already
`^1.29.0`, so only the lockfile pinned the old version; the manifests move too so
the floor matches what we test against.

Nothing in it is breaking. The four changed type declarations are additive —
optional `maxBufferSize` on `StdioServerParameters`, an optional third
constructor argument on `StdioServerTransport`, optional options on `ReadBuffer`,
optional `keepAliveMs` on the server transport — and the only manifest change is
`@hono/node-server` widening to `^1.19.9 || ^2.0.5`. No new dependencies.

Two behavior changes are worth knowing about even though neither is an API break.
`ReadBuffer` now caps a single stdio message at 10 MB (previously unbounded) and
errors the transport instead of growing, which is reachable through
`StdioClientTransport` if a stdio server returns a very large single result; it
takes `maxBufferSize` if that ever needs raising. And Content-Type handling
switched from substring search to parsed media types, client and server.

Most of the release is Streamable HTTP server hardening we do not run — a 15s SSE
keep-alive, `X-Accel-Buffering: no` on SSE responses, guards so a stale stream's
cancel cannot tear down its successor, and `_closed` checks so a transport closing
mid-request stops registering streams into swept maps. None of it changes how we
behave as a client. In particular it does not address the stale-stream 409 in
#14816: that keep-alive runs in whichever server we connect to, not here.

The same substring-vs-parse mistake the SDK corrected exists in our streamable
HTTP response guard, which classified a response as SSE with
`contentType.includes('text/event-stream')`. A `Content-Type` naming the SSE type
in a parameter — `text/plain; boundary=text/event-stream` — is not an event
stream, but matched. The guard then took `canEmitFallbackSSEError`, so an
oversized body was answered with a synthetic SSE error frame the caller reads as
a well-formed response body, rather than the throw a non-SSE response gets. The
check now compares the parsed media type, via a `mediaTypeEssence` helper added
to the header utils where `mergeHeaders` already lives.

Verified against 1.30.0 rather than assuming: the package was staged into the
worktree's own `node_modules` so it shadowed the shared install, and
`packages/api` `src/mcp` ran green on it — same four pre-existing red suites as
on 1.29.0 (`MCPReinitRecovery` plus three Redis `cache_integration` suites that
need a live Redis), no new failures.
2026-08-14 01:12:56 -04:00
Danny Avila
24d111fde9
feat: Add Gemini 3.7 Flash Support (#14818)
*  feat: Add Gemini 3.7 Flash Support

Adds first-class support for Google's Gemini 3.7 Flash (`gemini-3.7-flash`)
for both the Gemini API (AI Studio) and Google Cloud Gemini Enterprise Agent
Platform, following the Gemini 3.6 Flash integration (#14369).

- Context window (1,048,576) in googleModels; API + cache pricing in tx.ts.
- Model dropdown (config.ts) and GOOGLE_MODELS examples for both integrations.
- Register the model in the Flash-family handler so it inherits the existing
  strip of deprecated sampling params (temperature/topP/topK), rejected
  penalty params, and thinkingBudget, and defaults to `medium` thinking.
- Generalize that handler's enumerated table from a [id, level] tuple to a
  rule object, so a model can also declare thinking levels it rejects. Gemini
  3.7 Flash errors on `minimal` (which the Google endpoint offers in its
  thinkingLevel slider), so an explicit `minimal` is substituted with the
  nearest supported level, `low`. Explicit low/medium/high pass through
  unchanged.
- Apply Google's introductory pricing ($0.75 in / $3.75 out / $0.075 cached,
  per 1M) to Gemini 3.7 Flash and correct Gemini 3.6 Flash to the same rates.
  Both revert to $1.50 / $7.50 / $0.15 on 2027-01-01; noted at both call sites.

Resolves #14802

Ref: https://ai.google.dev/gemini-api/docs/models/gemini-3.7-flash
Ref: https://ai.google.dev/gemini-api/docs/pricing

* 📝 docs: Match the House Style for Promotional Rate Comments

Align the Gemini 3.6/3.7 Flash introductory-pricing notes with the existing
Sonnet 5 convention in the same file: one comment per group, naming the models
and the exact values to restore, so the manual follow-up is unambiguous.

No rate changes.

* ⬆️ chore: Bump `@librechat/agents` to 3.4.7 for Gemini 3.7 Flash Prefill

Unblocks this PR. `NO_PREFILL_GEMINI_MODELS` is model-enumerated in the agents
SDK, so 3.4.6 does not know `gemini-3.7-flash` forbids a trailing `model`-role
turn — editing an assistant reply and resubmitting would reach Google as a
prefill and return HTTP 400 on a model this PR adds to the default list.

3.4.7 (danny-avila/agents#412, released via #413) adds it. Verified the
published tarball: `3.4.6...3.4.7` touches only
`dist/{cjs,esm}/llm/google/utils/common.*` — the prefill array and its comment.
`dist/types` is byte-identical, so there is no API surface change.

Raises the declared range in both workspaces alongside the lock. `^3.4.6`
already permitted 3.4.7, but the fix is required rather than merely compatible,
so the floor should say so.
2026-08-14 01:12:42 -04:00
Danny Avila
5e464bc930
📎 fix: Alias Shell Script MIME Variants to application/x-sh (#14817)
* 📎 fix: Alias Shell Script MIME Variants to `application/x-sh`

Chrome on Linux reports `.sh` files as `application/x-shellscript`
(freedesktop shared-mime-info) and libmagic reports `text/x-shellscript`.
Neither string appears anywhere in the source, so uploads were rejected
even though `application/x-sh` is in the default allowlist and
`codeTypeMapping` maps `sh` to it — `inferMimeType` only consults the
extension map when the client sends no type at all, so a non-empty
browser value passed straight through to the allowlist check.

Alias both variants to the canonical `application/x-sh`, matching the
existing treatment of `text/x-markdown` and `application/x-zip-compressed`.

Also attach `statusCode`/`body` to multer file-filter rejections. Without
them the error misses the `isCustomError` branch in `ErrorController` and
falls through to a bare `500 An unknown error occurred.`, so the rejection
reason was logged server-side but never reached the client. The upload
hook already surfaces `error.response.data.message`, so a rejected file
now explains itself instead of showing a generic upload failure.

* 🔁 refactor: Move Upload Error Contract Into `packages/api`

Addresses codex P1 on #14817.

The producer of the `statusCode`/`body` pair now sits beside its consumer:
`isCustomError` and `ErrorController` are already in
`packages/api/src/middleware/error.ts`, and `CustomError` is already in
`packages/api/src/types/error.ts` — only the construction of that pair was
stranded in legacy JS. `createCustomError` is exported from the same module
as the guard that recognizes it, and `multer.js` is back to a thin caller.

Also pins the `.sh` back-compat claim with tests: configs from the
documented workarounds (`application/x-sh` per #4660/#5689/#6297, and the
broad patterns from #14804) still accept a `.sh` upload after the alias
rewrites the type. A negative control confirms the endpoint config is
genuinely in play rather than falling back to the default allowlist.
2026-08-14 01:12:23 -04:00
snapydziuba
6c46fd1252
📄 feat: accept PowerPoint template MIME type (#14761) 2026-08-14 00:22:01 -04:00
Danny Avila
6cbfd82772
🔌 fix: Recover Quietly From Stale MCP SSE Stream Conflicts (#14816)
A Streamable HTTP server allows one standalone `GET` SSE stream per session and
releases its mapping from the response stream's cancel callback. That callback
never runs when the connection dies at a proxy rather than at the client, so the
server keeps holding a stream nobody is reading while the client knows its stream
is gone. Every reconnect carrying that session id then gets a 409:

    SSE stream disconnected: TypeError: terminated
    Transport error (may require manual intervention):
      Streamable HTTP error: Failed to open SSE stream: Conflict
    Transport error (may require manual intervention):
      Maximum reconnection attempts (2) exceeded.

Nothing there requires manual intervention. The connection recovers on its own in
a few seconds, because the rebuild the first 409 escalates to sends the
spec-mandated `DELETE`, which drops the server's session along with the stream it
leaked. Two things made a self-healing event read as a fatal one.

`extractSSEErrorMessage` classified status by scanning the message text for
digits, but `StreamableHTTPError` and `SseError` carry the status on `code` and
their messages do not always repeat it. "Failed to open SSE stream: Conflict"
has no digits at all, so a 409 never reached the status branch and fell through
to the terminal `isTransient: false` — the same verdict as a DNS typo. A 5xx
arriving on `code` alone had the same blind spot. The status is now read from
`code` when it is in HTTP range, with the message scan kept as a fallback, and
409 joins 5xx as transient: the stale session it reports is cleared by the
rebuild, with nothing for an operator to do.

The second is volume. Each SDK retry fires `onerror` twice — once with the raw
throw out of `_startOrAuthSse`, once with the `Failed to reconnect SSE stream`
wrapper. Only the wrapper matched the existing suppression, so every doomed retry
logged at error level, and the retries are doomed by construction: nothing about
the same session id can stop conflicting. The first conflict now escalates for
rebuild and the rest are logged as the echo they are, along with the SDK's
out-of-retries announcement when a rebuild is already underway. The non-conflict
path for that announcement is untouched, so an exhausted budget still falls
through to our reconnection everywhere else.

`extractSSEErrorMessage` moves to `errors.ts` alongside `isOAuthAuthenticationError`.
It had no test: `MCPConnection.test.ts` held a hand-copied clone marked "keep in
sync with the actual implementation", so 66 assertions were exercising the copy.
The clone is deleted and the suite now imports the real function, which it turns
out had not drifted.

`MCPConnectionSseConflict.test.ts` drives a real client transport against a real
in-process `StreamableHTTPServerTransport` reproducing the sequence above: the
stream opens, its socket is destroyed underneath the client, and every later
`GET` on that session id conflicts while a rebuilt session gets a healthy stream.
2026-08-14 00:01:13 -04:00
Danny Avila
0654efb7ed
🔌 fix: Preserve MCP serverInstructions Declaration Through Inspection (#14815)
`MCPServerInspector` overwrote the operator's `serverInstructions` declaration
with the text fetched from the server. That made a YAML server's cached entry
differ from its own raw config on an admin-configurable field, so
`isUnmodifiedYamlServer` misclassified it as admin-modified and re-inspected it
on the first user-scoped resolve.

The second inspection produced a config with a newer `updatedAt`, which:

- flipped `getServerConnectionStatus` to `disconnected` permanently, since the
  healthy app connection was then measured against the newer timestamp; and
- made `isAppServerConfig` reject the effective config, gating off the app
  connection so `GET /api/mcp/tools` returned zero tools and cached nothing.

Fetched instructions now land on a separate `resolvedInstructions` field,
matching how every other inspector-derived value is stored, so the declaration
survives inspection and the guard compares like with like.

Bumps `REGISTRY_STORAGE_SCHEMA_VERSION` so Redis-backed deployments rewrite
entries whose `serverInstructions` still holds fetched text.

Fixes #14798
2026-08-13 23:37:58 -04:00
Danny Avila
abc669ab58
🩹 fix: Restore the @librechat/api Build and Remove Legacy Code (#14808)
* 🧹 chore: Remove Dead Legacy Agent Controller

`_LegacyAgentController` has been unreachable since the resumable path became
the only route: it is unreferenced, unexported, and untested. It had also
drifted out of compilability against the live file — line 2009 called
`attachConversationCreatedAt(req, { userId, conversationId, isNewConvo })`
against the 3-argument signature declared at line 97, which would await
`undefined` and then throw dereferencing `resolved.createdAt`.

Keeping it was not free. It carried a third independent copy of the response
message-id wiring (`getReqData`, `onStart`, four `updateMetadata` calls), so
every change to how a generation identifies its response row had a dead third
site to keep in step, and no test to say whether it had been kept in step.

Removing the block leaves `createCloseHandler` and the `sendEvent`,
`clientRegistry`, `requestDataMap` and `handleAbortError` imports with no
remaining callers, so those go too. `AgentController` was a three-line
passthrough to `ResumableAgentController`; the real controller is now exported
directly, which also matches the `[ResumableAgentController]` prefix every log
line in the file already uses. `server/routes/agents/chat.js` binds the export
to its own local name and passes the same five arguments, so the route is
unchanged.

No behavior change: 379 lines removed, 2 added.

* 🩹 fix: Remove Duplicated Anchor Block Breaking the `@librechat/api` Build

`dev` does not build. `packages/api/src/agents/activityPhases/runtime.ts`
carries two byte-identical 98-line copies of the same block (former lines
516-613 and 614-711), so rolldown fails to parse it:

    [PARSE_ERROR] Identifier `AnchorFields` has already been declared

The duplicated block is the anchor-construction work from #14805:
`AnchorFields`, `laterDefinedIndex`, `foldedAgentIds`, `boundedAnchor` and
`mergeAnchors`. #14807 was squashed from a branch that predated #14805 and
re-included that commit, so both copies landed. Only the `type` produced an
error — the four function declarations simply redeclare.

This removes the first copy. The two blocks were verified byte-identical
before the cut, and the resulting file has no duplicate top-level
declarations, is missing nothing that #14805 introduced, and retains
everything new to #14807 (`ResolvedPosition`, `resolvePosition`).

Verified: `tsdown` builds, `tsc --noEmit` clean, `config/circular-deps.mjs`
green across all five graphs (it was reporting `✗ @librechat/api` purely
because the build it shells out to was failing), and the 68 tests in
`activityPhases/runtime.spec.ts` pass.

Carried here rather than in a separate PR because this PR's checks cannot go
green until it lands: the failed `packages/api` build cascades into e2e, MCP
list_changed, bombadil and the Docker image jobs.
2026-08-13 19:57:32 -04:00
Danny Avila
78eb0c98ce
🧭 refactor: Resolve Activity Phase Position Once Per Boundary (#14807)
* refactor(api): make anchor construction exhaustive

Bounded anchors were built in two places, each spreading one side and
hand-picking the rest, so any field nobody named was dropped silently and
nothing failed until a boundary landed badly. That already cost agentId
and then unresolvedToolStartIndex in consecutive review rounds, and
mergedAgentIds was never added to the demotion path at all.

Both constructors now assign an AnchorFields literal, mapped over
keyof Required<TrackedActivity>, so adding a field to TrackedActivity is
a type error at both sites until its anchor semantics are decided.

No behavior change: every field resolves to what the hand-picked versions
already produced. Adds a folding property over count, failure count,
agent attribution, and ordering.

* refactor(api): resolve activity position once per boundary

Positional fields on TrackedActivity are captured at different times
against an array that keeps moving, so each was a cache that could go
stale, collide, or be truncated — and closesBeforeBoundary read three of
them directly. Roughly two thirds of the review findings on #14785 were
that pattern: a proxy outranking, outliving, or standing in for the
rendered position.

resolvePosition now folds tool indices, the prior partition floor, the
unmaterialized fallback, and reasoning anchors into one value, and
closesBeforeBoundary takes only that value. A caller cannot reach past
it to a raw field, and the four branches the predicate used to carry
collapse into one comparison: an activity closes early exactly when
nothing locates it beyond the boundary.

Resolution also decides when the saved fallback has gone stale, so the
stripping that kept it out of snapshots is now a property of the resolved
value rather than a separate step.

No behavior change; the existing boundary and straddle regressions cover
both directions.
2026-08-13 19:29:42 -04:00
Danny Avila
619ed2f1fb
🧱 refactor: Make Activity Phase Anchor Construction Exhaustive (#14805)
Bounded anchors were built in two places, each spreading one side and
hand-picking the rest, so any field nobody named was dropped silently and
nothing failed until a boundary landed badly. That already cost agentId
and then unresolvedToolStartIndex in consecutive review rounds, and
mergedAgentIds was never added to the demotion path at all.

Both constructors now assign an AnchorFields literal, mapped over
keyof Required<TrackedActivity>, so adding a field to TrackedActivity is
a type error at both sites until its anchor semantics are decided.

No behavior change: every field resolves to what the hand-picked versions
already produced. Adds a folding property over count, failure count,
agent attribution, and ordering.
2026-08-13 19:29:18 -04:00
Danny Avila
05ed7ad8c0
🔖 fix: Split Activity Phases at Substantial Text (#14785)
* fix(api): split phases at substantial text

* tune(api): split phases after 200 text chars

* fix(api): reanchor substantial text boundaries

* test(api): type multi-phase payload captures

* fix(api): preserve activity phase boundaries

* fix(api): anchor retained phase partitions

* fix(api): persist phase partition anchors

* fix(api): harden activity phase boundaries

* fix(api): preserve bounded phase partitions

* fix: preserve final and delayed phase content

* refactor(api): partition phase state at one boundary

Boundary closure split fifteen separately-maintained fields by hand, and
each fix partitioned one more while the next stayed unguarded. Fold the
overflow bookkeeping into the tracked activity list so every counted
activity carries a position, and route the split through a single
partitionAt that returns both sides.

Counts are now summed from the partition instead of reconstructed by
subtraction, so a run past the anchor budget reports every activity it
performed rather than the truncated window. Snapshots move to version 3;
the reader still accepts versions 1 and 2 and rebuilds their unpositioned
remainder as a bounded anchor, dropping it when its evidence is stale.

Adds a boundary-conservation property covering every split point.

* fix(client): drop empty phase content segments

Late-child recovery can strip every index from a segment it already
claimed, leaving a content segment with no parts. Each one still mounts a
nested ContentParts that renders nothing, and it broke the exact-segment
expectation in the late-child regression from 831a00353.

Route the four content pushes through one guard that skips index-less
segments, matching the existing splice of fully recovered segments.

* fix(api): keep the run's answer outside the collapsed phase

The substantial-text boundary replaced completion's final-text boundary
outright, so a short reply from a provider that emits no phase metadata
was folded into the collapsed parent. That is the deterministic e2e
failure at activity-phases.spec.ts:182 and codex's short-final-answer
findings; 831a00353 fixed only the path where the provider labels the
step final_answer.

Restore the completion boundary at the last materialized visible text
whatever its length. Length now decides only whether intermediate text
earns a boundary, and semantic commentary still stays inside. The
"later work" check shares one predicate with partitionAt so the two
cannot drift.

Also splits a legacy v1/v2 remainder across the positions its saved tool
anchors still materialize at, each carrying its own id so it can be
located, and merges over-cap anchors by closest pair into the earlier
position instead of folding the oldest forward.

* fix(api): clear resolved anchors and keep folded agents

Two findings from the latest review:

A resumed activity whose tool was missing at construction kept its high
fallback anchor after that tool materialized at a lower index, so the
partition rejected it at any boundary below the stale value and pushed
pre-boundary work into the following phase. Drop the anchor once every
tracked call has materialized.

Folding anchors past the cap spread only the surviving side, silently
dropping the other's agent. close() now derives both marker attribution
and the summarizer payload from the partitioned activities, so a merged
anchor carries the union instead.

Both regressions are mutation-checked against their own fix.

* fix(api): anchor live batches awaiting materialization

A batch tracked after its child-label slot is reserved but before its
tool call reaches the shared array had no materialized position, and the
partition read "nothing materialized" as "happened earlier". A boundary
between the two then counted the batch in the earlier phase while ending
before its eventual tool call, stranding the tool outside its parent.

Record the tracked start as an unresolved anchor in that window so the
existing retain branch keeps the batch on its own side. Using the plain
fallback index instead is wrong: restored evidence-less activities carry
a synthesized index, not a position.

Regression is mutation-checked against its own fix.

* perf(api): partition in one pass and reanchor filtered batches

Dropping a batch's already-covered calls leaves a different activity
behind, but the batch position was still the covered call's index. The
survivor therefore inherited a position inside an emitted phase and was
consumed by it instead of being held for its own. Re-derive the start
from the retained ids, which also restores the unresolved-anchor signal
when none of them have materialized.

The boundary partition also classified every activity twice and rescanned
retained ones to reanchor, walking the shared content array several times
per activity per boundary. Build both sides in one pass with the
materialized tool indices computed once and threaded into the predicate.

Regression is mutation-checked; an earlier version of it was vacuous
because the tool materialized before completion, converging both paths.

* perf(api): carry tool indices through boundary resolution

The previous pass cached the materialized indices only in the partition
loop, so resolution still scanned for the batch start and again for the
fully-materialized check, and an empty result triggered a third scan
inside the boundary predicate.

Walk the shared content array once per activity and carry the indices
through resolution, classification, and reanchoring. findTrackedToolStart
becomes its own first element and is dropped.

* fix: trust rendered position over registration order

Three findings from the latest review:

Context partitioning only consulted the rendered index when the activity
position tied the closing count, so a parallel lane registered before the
closing tool hooks was assigned to the earlier phase despite rendering
after the boundary. An activity position is registration order; a
materialized index is proof, and now wins whenever it has one.

Snapshot restore bound pending reasoning to the first part sharing its
80-character anchor, which could replay a still-pending lane on the
earlier side of a boundary and delete it. An ambiguous anchor is treated
as unresolved.

Recovering the only filled child label out of a phase segment left its
hasContent flag set, rendering an expandable card with an empty body.

The context regression is mutation-checked against its own fix.

* fix(api): decide context by proven position, both directions

The previous change let a rendered index override registration order only
when it proved the text was after the boundary, and trusted that index
even when it was not provably this entry's.

Both gaps were reachable. Context registered after work that already
rendered ahead of it was retained despite rendering before the boundary,
and a restored entry with no step id whose excerpt repeats after the
boundary matched the later occurrence and moved to the wrong phase.

Locating now reports whether the position is authoritative — anchored by
a step index or a unique text match — and only then decides, in both
directions. Otherwise the saved activity position stands.

Each regression is mutation-checked against its own direction.

* fix(api): carry unresolved positions through folded anchors

Folding two anchors spread only the surviving side, dropping the later
one's unresolved fallback. A boundary between them then saw just the
earlier materialized tool index and closed the whole merged count,
counting work whose tool call had not appeared and leaving that call
outside its parent.

Carry the later fallback into the merged anchor; resolution already
clears it once every retained id materializes.

Regression is mutation-checked against its own fix.

* fix(client): keep phase headers recovery did not empty

A completed phase can carry no children after compaction — its summary
header is the whole segment. Recovery spliced any segment left with no
retained indices, so a later marker deleted that header even though it
recovered nothing from it.

Only drop a segment recovery actually emptied, not one that arrived
empty. Regression is mutation-checked against its own fix.
2026-08-13 16:16:09 -04:00
Danny Avila
bcbe26ab4c
🪑 fix: Rebase Activity Phase Bounds Onto Compacted Content and Unskip the MCPManager Suite (#14782)
* 🧭 fix: Rebase Activity Phase Bounds Onto Compacted Content

`filterMalformedContentParts` compacts the aggregator's content array —
`Array.prototype.filter` skips holes and drops malformed tool calls — but a
parent phase marker's `activity_start_index`/`activity_end_index` still address
the pre-filter positions. The array is routinely sparse: the aggregator writes
parts at provider-source indexes, so a model turn that emits no text before its
tool calls leaves an empty slot.

Every part after a hole therefore shifts left on persistence while the bounds
stay put, so the stored phase claims the wrong range — the final answer is
swallowed into the parent card and the marker's own slot is counted as a child.
The in-run analogue (`rebaseActivityPhaseBounds`) already rebases after
completion-time reshaping; the final compaction had no such step.

Rebase the bounds as part of the compaction, mapping each bound to the number
of retained parts ahead of it. The mapping is monotonic, so `start <= end <=
markerIndex` survives, and an identity mapping leaves untouched arrays — and
their marker objects — exactly as they were. Markers are copied rather than
mutated so the caller's array keeps its own coordinates, which the live stream
and the resume snapshot still address.

Fixes the `activity-phases` e2e failure on dev and the same defect on the two
resume persistence paths.

* 🔌 fix: Stop Replacing the Env Module in the MCPManager Suite

`MCPManager.test.ts` mocked `~/utils/env` with a factory that replaced the whole
module. #14780 then made `~/mcp/utils` read `ALLOWED_BODY_FIELDS` from that
module at module scope, so importing `~/mcp/oauth` -> `handler.ts` ->
`~/mcp/utils` evaluated `undefined.map(...)` and the suite died at import time.
All 111 of its tests have been silently skipped since; the shard has been red on
dev, on this PR, and on release-v0.8.8-rc1.

Spread the real module and keep only the mock that earns its place.
`processMCPEnv` stays a seam: fifteen cases drive it with `mockReturnValue` /
`mockImplementation` to hand the manager a specific processed config, and one
asserts its call count, so making it real would couple these tests to
env-substitution logic. `isPluginSourced` and `MCP_PLUGIN_SOURCE` were dropped —
the factory restated the real implementations verbatim and no test referenced
either, so they were duplication, not a seam.

111 tests now run and pass.

* 🧪 test: Stop Replacing the Env Module in Three More Suites

Same latent trap as the MCPManager suite: a `jest.mock('~/utils/env', ...)`
factory that replaces the whole module. These three pass today only because
their import graphs never reach `~/mcp/utils`, which reads `ALLOWED_BODY_FIELDS`
from that module at module scope — the next module-scope constant added to
`env.ts` would break all three the same silent way.

Each mock is kept only where it earns its place:

- `activityLabels/host.spec.ts` — dropped. `createSafeUser` was never referenced
  and the stub returned `undefined` where the real function returns `{}`, so the
  mock was strictly less faithful than the real, pure implementation.
- `run-codeTools.test.ts` — dropped. Neither `resolveHeaders` nor
  `createSafeUser` was referenced by any case.
- `run-summarization.test.ts` — `resolveHeaders` is now a spy wrapping the real
  implementation rather than an identity stub. One case asserts templated header
  values go through it, which only means something if the real substitution
  actually runs. `createSafeUser` dropped as unreferenced.

103 suites / 2708 tests green across `src/agents`, `src/utils`, and the
MCPManager suite.

* 📝 docs: Describe the Full Contract of filterMalformedContentParts

Per Copilot's review: the public JSDoc still described the function as only
dropping malformed tool calls, while the implementation also compacts empty
slots and rebases parent activity-phase bounds. The detail lived on the private
helper, so callers reading intellisense saw a stale contract.

State what it actually produces, note that compaction is inherent rather than
incidental (the aggregator writes at provider-source indexes, so the array is
frequently sparse), and add an example of a hole moving a phase bound. The
example was verified against the built runtime, not written from memory.
2026-08-13 07:52:12 -04:00
Danny Avila
df6e15a0de
🔖 feat: Bound Parent Activity Phases With an Exclusive End Index (#14768)
* 🧭 fix: Finalize Parent Activity Phases at Run Completion

* 🧭 fix: Preserve Activity Phase Boundaries

* 🎨 fix: Format Activity Phase Boundary Check

* 🧭 fix: Ignore Late Label Artifacts at Phase Completion

* 🧭 fix: Preserve Logical Activity Phase Membership

* 🩹 fix: Narrow Optional Activity Phase Marker

* fix activity phase tail boundaries

* fix activity phase test lint

* fix straddling activity phase batches

* preserve activity phase boundaries at scale

* fix persisted activity phase final boundary

* fix resumed activity phase edge cases

* fix sparse activity phase grouping

* fix sparse activity phase tail scan

* fix resumed activity phase text fallback

* fix sparse activity phase completion scans

* avoid sparse activity phase runtime scans

* stabilize sparse activity phase resumes

* support activity phases on current ts target

* preserve sparse phase reservations

* finalize activity phase boundary handling

* avoid sparse phase start scans

* fix activity phase final text bounds

* tighten activity phase summary boundaries

* format activity phase boundary checks

* leave final commentary outside activity phases

* recognize lane-tagged final activity text

* rebase retained activity boundaries on resume

* bound activity phase collection work

* correct resumed phase activity count

* resolve late reasoning before phase completion

* preserve lane-tagged final answers

* assert durable activity phase bounds in e2e

* preserve empty finalized activity phases

* ignore empty reasoning at phase completion

* format phase completion guard

* fix(api): retain overflow reasoning anchors

* perf(api): index overflow reasoning anchors

* perf(api): skip empty reasoning index scans

* fix(api): reconcile completion boundaries efficiently
2026-08-12 23:43:35 -04:00
Danny Avila
1a3e2aebcb
🛰️ fix: Attach Request-Scoped MCP Servers (#14780)
* fix: attach request-scoped MCP servers

* fix: satisfy MCP static checks

* fix: format MCP runtime hint
2026-08-12 23:43:02 -04:00
Danny Avila
298a3d9ee9
📦 chore: Update @librechat/agents to v3.4.6 (#14781) 2026-08-12 23:42:13 -04:00
Danny Avila
8f1f961212
🧱 refactor: Require Broad Config Management for Base Field Mutations (#14775) 2026-08-12 22:32:38 -04:00
Danny Avila
861cfe8a3c
🧩 fix: Normalize Malformed MCP Required Schemas (#14771) 2026-08-12 22:29:25 -04:00
Ravi Kumar L
9980b6221f
🪢 feat: add Langfuse session links (#14776)
* feat: add Langfuse session links

* fix: tighten Langfuse session link resolution

* fix: clear stale Langfuse session links

* test: verify tenant Langfuse session links

* fix: align Langfuse link with client conventions
2026-08-12 22:25:23 -04:00
Marco Beretta
92a8058f02
🛟 fix: Isolate Invalid Skills During GitHub Sync (#14735)
* fix: treat unrecognized SKILL.md frontmatter keys as warnings

An unknown key in one SKILL.md failed that skill outright, and because the
GitHub sync runner marks a source failed on any validation error, a single
stray key took down every other skill in the repository. Syncing
github.com/cloudflare/skills failed entirely because 2 of its 13 skills
carry a `references:` key.

UNKNOWN_KEY is now a warning, so the skill is stored (unknown keys and all)
and the issue is surfaced rather than fatal. `references` joins the allowed
set with a shallow JSON-safety check instead of a strict kind match: real
files use a string, a list of strings, a list of objects, and a map, and
pinning one shape would reintroduce the same failure.

Malformed frontmatter stays fatal: INVALID_TYPE, INVALID_SHAPE and the
non-plain-object check are unchanged.

* fix: skip individual skills instead of failing a whole sync source

Any error inside the discovery or commit loop reached the outer catch and
marked the entire source failed, so one unusable SKILL.md, one oversized
blob, or one duplicate name cost every other skill in the repository.

Each skill now runs inside its own boundary and a failure is recorded
against that skill. Errors that mean nothing else in the run can succeed
(lock loss, GitHub auth failures, rate limiting) still abort the source
rather than being charged to whichever skill hit them first. Skills are
marked seen before the attempt, so the reconcile pass cannot mirror-delete
the previously synced copy of a skill a later run can repair, and duplicate
names now drop the whole colliding group instead of letting tree order pick
an arbitrary winner.

Status gains `partial` (published some, skipped others) plus a capped
sample of the skipped skills with the reason for each. A run that publishes
nothing and skips something is still `failed`, carrying the first skip's
error. The skipped entries name repository paths, so they follow the same
visibility rule as owner/repo/paths; the bare count does not.

Sync warnings are logged too: a background run has no user-facing surface,
so the log is the only place a maintainer sees why an upstream SKILL.md
looks off.

* test: cover skill sync warnings reaching the log

An unrecognized frontmatter key no longer fails the skill, so a background
sync has nowhere to report it except the log. Every mock in this spec
returned an empty warning list, which left that path unexercised.

* fix: describe nested frontmatter values in the shared skill type

`SkillFrontmatterValue` allowed only scalars and string arrays, while the
server has always stored `hooks` and `metadata` as JSON-safe objects, and now
`references` too. A skill carrying any of them could not be represented by
`TSkill`, `TCreateSkill` or `TUpdateSkillPayload` without a cast.

The type stays free of `any` and `unknown`: values remain JSON-safe by
construction, and the server keeps bounding depth, string length and array
size when it validates them.

* fix: protect moved mirrors and rolled-back counts when a skill is skipped

Continuing past a failed skill exposed two problems that aborting the whole
source used to hide.

A moved skill's mirror keeps its old upstream id until the update lands, and
only the new path was marked as seen, so the reconcile pass read the mirror as
stale and deleted the very copy the skip path exists to preserve. The old id is
now marked as seen too.

Deletion counters were incremented when a stale name-conflicting mirror was
removed, but never undone when the following commit failed and the mirror was
restored. The run no longer stops there, so the status persisted a deletion
that did not happen and the reconcile pass counted the restored row again.
Counters are now rolled back when the restore succeeds.

* fix: bound unknown frontmatter values and keep moved mirrors through duplicates

Tolerating an unrecognized key meant its value skipped the shared JSON-safety
check, so a deeply nested or oversized payload was accepted and persisted under
a key nobody validates. The key stays non-blocking; the value is now held to
the same depth, array and string bounds as every structured key.

A skill that moves into a name another discovered skill also claims is dropped
with the rest of its duplicate group before the sync path can reuse its mirror,
which left the still-published copy unmarked and reconciled away. Both paths now
mark the moved mirror through one helper.

* fix: end the source when a skipped skill fails to roll back

A skill that fails and rolls back cleanly is just a skipped skill. One whose
restore or delete also fails leaves a mirror with half-rewritten files or a
half-created row, and the run now continues past it, so the source could report
partial success while that mirror stayed inconsistent and its pre-marked
upstream id kept reconciliation away from it.

Failed rollbacks now raise a source-fatal error carrying the original failure,
which stops the source the way a lost lock or a refused GitHub token does.

* test: cover a skipped skill discovered at the repository root

A repository-level SKILL.md is discovered with an empty path, so this pins
that a skip recorded against it still persists with the rest of the partial
status rather than taking the whole status row down with it.

* docs: describe unknown skill frontmatter warnings

* fix: preserve mirrors after partial skill sync

* fix: preserve skill validation details during sync

* fix: fail sync when mirror identity cannot be restored

* fix: harden skill sync failure boundaries

* fix: preserve skipped skills on fatal sync

* fix: surface skill sync diagnostics and rollback failures

* fix: preserve skill frontmatter extension keys

* fix: reject skill frontmatter keys that collide when normalized

Frontmatter keys are matched case-insensitively against the canonical
key list, so "Name" and "name" both resolve to "name". Every call site
normalized independently, and the last key in iteration order silently
won, meaning the effective value depended on YAML ordering rather than
on anything the author could see.

Centralize the normalization in normalizeSkillFrontmatterKeys and have
it fail when two recognized keys resolve to the same canonical key,
rather than picking one. parse.ts, deployment.ts and the agent handler
now surface that as a parse error; createSkill and updateSkill surface
it as a blocking DUPLICATE_KEY validation issue. Unrecognized keys are
still passed through untouched so extension frontmatter survives.

deriveStructuredFrontmatterFields and both write paths now run on the
normalized map, so a "Disable-Model-Invocation" key derives the same
column a lowercase one does.

* fix: harden github skill sync against dropped requests and failed cleanup

Three failure paths in the GitHub sync could leave a source looking
healthier than it was.

githubJson only handled HTTP-level errors. A fetch that rejected before
producing a response (DNS failure, socket reset, abort) escaped as a
raw TypeError, so the sync reported a generic crash instead of a typed
sync error. Wrap it as GITHUB_REQUEST_FAILED and add that code to the
fatal set, since a source whose requests never complete cannot be
partially synced.

When a synced file failed to persist, the orphaned upload was cleaned
up on a best-effort basis and the cleanup error was only logged. If the
cleanup itself failed, the source still ended with the original error
and left a real orphan behind. Promote that to a rollback failure so
the source reports SYNC_ROLLBACK_FAILED with the triggering error.

Skill warnings were logged inside commitRemoteSkill, before the file
sync and viewer setup that can still roll the skill back. A skill that
never survived publication therefore emitted warnings as though it had.
Return the warnings from the commit and log them once the skill is
fully published.

* fix: report skipped github skills before credential errors

serializeErrorMessage checked isCredentialError first, and that check
matches on the error text. A skipped skill whose path happens to
contain a credential-ish word, for example skills/credential-helper,
was therefore redacted to "GitHub skill sync credentials are not
available" for admins without credential-metadata access, hiding a
parse failure behind a wrong diagnosis.

Check the promoted skipped-skill case first, since it is identified by
error code rather than by text and is the more specific match. The
credential redaction still applies to everything else.
2026-08-12 13:22:06 -04:00
Danny Avila
ee8c0abe2d
🪝 feat: Execute Agent Plugin Command Hooks (#14755)
* 🪝 feat: Execute Agent Plugin Command Hooks

Implement the missing PluginHookExecutor boundary so deployment plugins'
ai.librechat/hooks/hooks.json documents execute instead of loading inert:

- Command executor runs handlers as child processes outside the API
  process: Claude-shaped JSON payload on stdin, exit 0 + JSON stdout as
  sanitized hook output, exit 2 blocks with stderr as the reason, minimal
  allowlisted environment plus PLUGIN_ROOT/PLUGIN_DATA, abort-signal kill
- Plugin loading carries the parsed hooks document on the contribution and
  threads hookCapabilities from startup, gated on the operator opt-in
  DEPLOYMENT_PLUGIN_HOOKS (off by default: parsed-but-inert with warning)
- Runs register every ready plugin hook onto the per-run HookRegistry after
  internal policy hooks, with once-per-conversation SessionStart dedup

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Harden Plugin Hook Execution Boundary

Address CI and Codex/Copilot review findings on #14755:

- Break the agents -> plugins import cycle: the run seam now reads a
  PluginHookSource wired at startup (mirrors the tool-approval registry)
- Tighten plugin ask decisions to deny unless the run has HITL wiring,
  so an un-resumable interrupt can never strand OpenAI-compatible callers
- Scope cross-run dedup keys by authenticated user and handler identity:
  caller-supplied conversation ids cannot collide across principals, and
  sibling SessionStart handlers all fire; once handlers persist across runs
- Replace a literal NUL byte in source with an escape (file diffed binary)
- Kill the whole detached process group on abort, not just the shell
- Map exit 2 on events without a decision channel to preventContinuation
- Reserve PLUGIN_ROOT/PLUGIN_DATA against allowlist overrides, quote
  PowerShell args, cap captured output by bytes with one-pass decoding,
  and serialize payloads inside the executor's error boundary
- Fix import ordering flagged by the static checks

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Close Plugin Hook Policy and Namespace Gaps

Address the second Codex review round on #14755:

- Drop updatedInput from plugin command outputs: hooks in one dispatch all
  receive the original arguments, so a plugin rewrite would reach the tool
  without the approval policy re-evaluating it (host-only now)
- Translate Claude tool aliases (Bash/Write/Edit/Read) to LibreChat runtime
  names in matchers, with reverse payload mapping, so Claude-authored guards
  fire instead of planning ready and never matching
- Key once-only state by declaration position as well as handler contents,
  so sibling declarations with identical handlers stay independent
- Thread sessionStartSource through createRun and mark the HITL resume
  rebuild as 'resume', so SessionStart matchers see the real lifecycle

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Translate Regex-Form Claude Tool Aliases

Address the third Codex review round on #14755: alias translation now
substitutes word-bounded tokens, covering regex matchers like ^Bash$ and
^(Write|Edit)$ that the exact-token pass left registered against Claude
names and silently never firing. A regex whose alias sits inside a
character class or escape is rejected as unmapped so it fails loudly at
plan time instead of never running.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Scope Alias Translation and Reuse Load-Time Plans

Address the fourth Codex review round on #14755:

- Add the WebSearch -> web_search alias so Claude-authored web-search
  guards fire against the LibreChat built-in
- Apply alias translation only to tool-name events; a StopFailure matcher
  like ^Bash failed$ stays untouched and keeps matching the error text
- Reuse each plugin's load-time hook plan at run registration instead of
  re-planning up to 512 handlers on every chat turn

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Translate Aliased Tool Inputs and Harden Hook Domains

- Present aliased tool inputs under Claude field names (file_path,
  old_string, new_string, including nested edits), so Write/Edit/Read
  guards see the fields they check instead of silently allowing
- Derive the alias table from canonical tool-name definitions
  (BashExecutionToolDefinition, CREATE_FILE_TOOL_NAME, Tools.web_search)
  instead of a parallel hand-authored table
- Reject matchers naming Claude built-ins with no runtime equivalent
  (Task, Glob, Grep, WebFetch, ...) as unmapped at plan time instead of
  registering guards that never fire
- Replace per-event Sets and Stop special-cases with an exhaustive
  EVENT_TRAITS record over HookEvent, so new engine events demand
  explicit semantics at compile time
- Move cross-run once-state behind a PluginHookOnceStore seam with a
  least-recently-marked memory default: active conversations refresh
  their keys each turn, so capacity eviction can no longer re-fire a
  conversation that is still in use; the seam admits a shared-cache
  store for multi-replica deployments
- Gate portable-only command handlers at plan time on Windows via a new
  supportsHandler capability (commandWindows or shell powershell
  required) instead of spawning bash that cannot exist
- Kill Windows hook process trees with taskkill /t on abort
- Require declaration indices on execution requests, stamped from the
  plan instead of defaulted at execution time

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Keep Group SIGKILL Escalation Armed After Wrapper Exit

An aborted hook whose descendant ignores SIGTERM could leak that
descendant: the wrapper shell's exit fired close, which cancelled the
scheduled group SIGKILL. The escalation timer is now never cancelled —
it is unref'd and killTree already tolerates a vanished process group,
so a redundant late sweep is harmless while a surviving descendant is
reliably killed at the grace deadline. killGraceMs is configurable on
CommandExecutorOptions, with a regression test driving a trap-protected
descendant past the wrapper's exit.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Scope Once Retention by Conversation and Reject Clear Source

- Restructure the once store around conversation scopes: registration
  touches the scope every run, so rarely-matching once handlers keep
  their keys while the conversation is active; eviction removes whole
  idle conversations (capacity counts conversations, not keys)
- Reject SessionStart matchers naming the clear lifecycle source at
  plan time — no LibreChat run-construction path emits clear, so the
  handler would plan ready and never fire; wildcard warning text now
  reflects the sources that actually occur
- Make the SIGKILL-escalation regression test real: the surviving
  descendant redirects its stdio away from the captured pipes so the
  wrapper's close fires while it is still alive, exercising the
  window a close-time cancellation would leak

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Bound Alias Tokens by Tool-Name Characters and Host Shells

- Translate Claude aliases (and reject unsupported built-ins) only when
  delimited by characters that cannot appear in a runtime tool name:
  action tool names preserve hyphens, so an alias embedded in a longer
  name like deploy-Bash-v2_action_example_com stays the literal tool
  name instead of being rewritten into a matcher that never fires
- Reject PowerShell-only command handlers on POSIX hosts at plan time
  (and skip them at runtime): bash cannot run PowerShell syntax, so the
  guard would fail open; a handler with both variants still runs its
  portable command
- Handle rejected asynchronous once-store calls: a failed touch logs
  instead of raising an unhandled rejection during run construction,
  and a failed markOnce lookup fails open per the store's documented
  over-fire direction

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Probe Group Liveness Before Cancelled or Delivered SIGKILL

The never-cancelled escalation timer could signal a recycled
process-group id when an aborted hook's whole tree exits early in the
grace window. Escalation now probes the group with signal 0: close
cancels the timer only when the group is verifiably empty, and the
deadline re-probes before delivering the group SIGKILL, so surviving
descendants are still reaped while a fully-dead group never receives a
blind late signal. The residual probe-to-signal race is documented as
irreducible without pidfd support.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Gate Windows Escalation on Root-Process Liveness

Windows taskkill /t walks the tree from the root process, so once Node
observes the root's exit an escalation pass can reap nothing and a late
forced taskkill could only hit a recycled PID. The liveness gate is now
platform-aware in one helper: POSIX probes the process group with
signal 0, Windows checks the root's observed exit state, and both the
close-time cancellation and the deadline delivery consult it — no
platform retains a blind late signal. Orphaned SIGTERM-ignoring
descendants on Windows are documented as the platform limitation they
are without Job Objects.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Scope Payload Namespace to Declarations and Reap Stray Workers

- Reverse name/input translation now applies only to declarations whose
  matcher actually required Claude-alias translation: the plan records
  requiresToolNameTranslation per entry, so a native-authored matcher
  like ^create_file$ receives native tool names and fields instead of
  Claude-shaped payloads its guard never expected
- Coordinate the two dedup layers via a shouldExecute gate on the
  executor: a declaration suppressed by spent once-state declines
  before claiming the per-input dedup slot, so an identical handler
  under an overlapping matcher can still claim it and fire its own
  independent once-key instead of being permanently shadowed
- Reap process groups that outlive a successful hook: a backgrounded
  worker left running after normal wrapper exit gets the same
  term-then-escalate sequence an abort uses, since unsupported async
  handlers mean no lifecycle owns such processes

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🧰 chore: Vendor Pocock Codebase-Design and Architecture Skills

Adds mattpocock/skills engineering/codebase-design and
engineering/improve-codebase-architecture (MIT, license included) under
.claude/skills so future sessions share the deep-module vocabulary
(module, interface, depth, seam, adapter, leverage, locality) and the
architecture-review process. Force-added past the /.claude/ gitignore
deliberately; relocate if project skills should live elsewhere.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 refactor: Extract Process-Tree Reaping Into a Reaper Module

Tree lifecycle — five of the last seven review findings — lived as
event-handler wiring inside runCommand with its invariants in comments.
It now sits behind a two-method seam: createReaper(child, graceMs)
exposes reap() and onClose(), hiding the term-grace-escalate state
machine, the per-platform liveness gates, the recycled-id guards, and
the clean-exit sweep. The executor shrinks to capture-and-parse, and
the reaper is unit-tested directly with real process trees through its
own interface instead of only via whole-executor integration runs.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Scope Translation Per Alternative and Sweep at Root Exit

- Track which runtime tool names alias translation produced, so a
  mixed-namespace matcher like Bash|create_file presents Claude-shaped
  payloads only for bash_tool invocations while the natively-authored
  create_file alternative keeps native names and fields; a capability
  omitting the produced-names list keeps declaration-wide translation
- Sweep the process tree at root exit as well as close: a backgrounded
  descendant holding the captured pipes delays close until it dies, so
  the exit-time sweep terminates it promptly instead of stalling the
  hook until its timeout aborts
- Pass the primary agent's resolved model and identity into the plugin
  hook context, so SessionStart payloads carry model and agent_type
  instead of always omitting them

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Default Wildcard Declarations to the Document Namespace

- Matcherless (or wildcard) tool-payload declarations now inherit the
  hook document's Claude namespace: with no alternatives to carry
  namespace evidence, the plan marks them for declaration-wide reverse
  translation, so a wildcard guard inspecting standard Claude names and
  fields sees Write/file_path instead of silently failing open on
  native payloads; PostToolBatch entries translate the same way
- Recognize aliases delimited by regex metacharacters: dots leave the
  tool-name boundary class (runtime names never contain them — action
  ids underscore domain dots), so ^Bash.*$ translates to ^bash_tool.*$
  instead of registering a guard that never fires
- Expand Claude's ${CLAUDE_PLUGIN_ROOT} spelling in hook commands and
  export it in the child environment alongside PLUGIN_ROOT
- Scope SessionStart once-keys by lifecycle source, so a startup firing
  no longer suppresses the conversation's resume rebuild

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Normalize Claude Structured Hook Output

Stock Claude hooks return decisions under hookSpecificOutput
(permissionDecision/permissionDecisionReason), surface context there,
and use continue:false plus the legacy approve/block decisions — none
of which the sanitizer's native field names recognized, so a guard that
works in Claude silently allowed in LibreChat. Parsed JSON now passes
through a dialect normalizer first: hookSpecificOutput fields map to
decision/reason/additionalContext, continue:false becomes
preventContinuation, approve becomes allow, and block becomes deny on
events that block by denying. Native fields win when both dialects
appear, and the ask-to-deny gate applies to the Claude dialect too.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Validate Native Decisions and Slim Once Keys

- Strip malformed native output fields before the dialect merge, so a
  placeholder like {"decision":null} can no longer suppress a valid
  Claude permissionDecision into a silent allow; only recognized
  decision tokens take precedence
- Preserve the caller's working directory in hook payloads: cwd now
  reports the run's session context instead of the plugin installation
  path, which commands already receive as PLUGIN_ROOT and which the
  executor still uses as each process's working directory
- Store a compact sha256 digest instead of the full serialized handler
  in once keys: declarations may carry 32 KB commands and 256 args, and
  the previous key embedded them in every retained conversation scope

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

* 🪝 fix: Validate Decisions Per Event Channel and Control Post-Tool Blocks

- Accept native decision tokens only from the target event's own
  vocabulary: "continue" is valid on Stop but malformed on a tool
  event, where it previously survived validation, blocked the Claude
  dialect merge, and was then dropped by sanitization into a silent
  allow
- Translate a structured "block" on events with no deny channel
  (PostToolUse, PostToolUseFailure, and the other prevent-trait events)
  into preventContinuation with the block reason as stopReason, instead
  of discarding it and returning a reason that controls nothing
- Document why LibreChat runs supply no payload cwd: tool paths address
  a remote code-execution sandbox rather than the API host where hook
  commands run, so no host directory describes the run

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MWXQZD2WzeAsvee4eRdWWc

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-08-12 13:21:15 -04:00
Danny Avila
b2128a7d18
📡 fix: Preserve Redis Abort Terminal Delivery (#14749)
* fix(stream): preserve terminal delivery after Redis fences

* fix(stream): cover Redis abort acknowledgment window

* chore: sort stream timing imports

* fix(stream): follow durable replacement handoffs

* fix(stream): bound replacement handoff retirement

* test(stream): cover handoff deadline drain

* test(stream): cover fenced steer retirement grace

* fix(stream): scope fenced retirement lifecycle

* fix(stream): retire fenced subscribers safely

* test(stream): settle subscription fixtures
2026-08-12 07:33:07 -04:00
Danny Avila
88e08c91e8
🧷 fix: Preserve Elicitation Answers Across Aborts (#14745)
* fix: preserve elicitation answers across aborts

* chore: sort stream type imports

* fix: guard malformed resolved answers

* fix: close abort answer race gaps

* fix: retain exact answers across pauses

* fix: retain answers across resumed pauses

* test: satisfy HITL fixture types

* fix: retain legacy answers through approvals

* fix: preserve answers in reconnect snapshots

* test: type legacy answer fixture

* fix: bind legacy answers to paused content

* test: guard optional resume content

* fix: resume questions without streamed content

* fix: Preserve legacy answers through abort filtering

* test: Narrow reconstructed abort fixture

* test: Type abort transform fixture explicitly

* fix: Isolate answers with missing ask content

* test: Type missing-content ask fixture
2026-08-12 07:32:48 -04:00
Danny Avila
236ee6c1ab
🧭 fix: Re-Anchor Parent Activity Phase Bounds (#14741)
* test: cover parent activity phase finalization

* test(e2e): stabilize parent phase coverage

* fix(agents): reanchor parent activity phase bounds

* fix(agents): preserve delayed tools in activity phases

* test(agents): keep phase slice bounds typed

* fix(agents): preserve sparse activity phase bounds

* test(e2e): read structured phase replies
2026-08-11 10:16:57 -04:00
Danny Avila
ba29a6c5d6
🔐 fix: Preserve Plugin MCP Provenance Through Registry Storage (#14744)
* 🔐 fix: Preserve Plugin MCP Provenance Through Registry Storage

Agent Plugins MCP servers are tagged `source: 'plugin'` by the plugin
loader so `processMCPEnv` returns them verbatim, keeping any `${VAR}` a
plugin declared literal. The registry derived `source` from the storage
tier alone, so every startup server routed through
`addServer(..., 'CACHE')` was retagged `'yaml'` — before inspection and
again before persistence.

That dropped the marker for deployment plugin servers merged into the
startup MCP config, so `processMCPEnv` treated plugin-authored strings as
operator-authored templates and expanded them from `process.env`. A
malicious plugin declaring `Authorization: Bearer ${OPENAI_API_KEY}`
received the host's key at its own endpoint, at both boot-time inspection
and every runtime connection.

`resolveServerSource` now carries an existing plugin marker through
instead of re-deriving it, and is applied at all four tag sites
(`addServer`, `addServerStub`, `inspectServerUpdate`, and config-tier
lazy init, which hardcoded `'config'` and would have re-opened the same
hole). The marker is only honored for operator-loaded tiers: a DB entry
is user-authored and stays `'user'`, so user input cannot claim plugin
provenance to escape the sandboxed placeholder rules.

* 🔒 fix: Address Codex review — config-override provenance & upgrade re-tag

Two follow-ups from the Codex review of the provenance fix, plus a test
cleanup.

P2 — a Config-tier override that shadows a same-name plugin base inherited
the base's `source: 'plugin'` through the merge in `getServerConfig` /
`getAllServerConfigs`, so `processMCPEnv` stopped resolving the operator's
own `${VAR}` placeholders and silently broke their server. New
`overlaySource` helper keeps an operator override on its own trusted
source when the base is plugin-sourced; all other bases still inherit as
before. Fails safe (never a leak), but the regression is real.

P1 — the init fingerprint hashes only the raw MCP config, which already
carried `source: 'plugin'` before the provenance fix, so the hash is
unchanged by it. On a Redis-backed rolling restart with no config change,
followers short-circuit on the stale `INITIALIZED_CONFIG_HASH` and the
old `source: 'yaml'` plugin entries survive with no expiry — the fix
never takes effect. Fold a `REGISTRY_STORAGE_SCHEMA_VERSION` into the
fingerprint so an upgrade forces exactly one cluster-wide re-init.

Also drop unnecessary `as` casts in the provenance tests (declare the
fixture as `ParsedServerConfig`, assert with `toMatchObject`) and add a
regression test for the P2 override case.
2026-08-11 08:55:07 -04:00
Danny Avila
7347cfc195
🍡 feat: Batched User Questions With A Single Bounded Answer Form (#14737)
* feat: support batched user questions

* test: align batched question fixtures

* fix: harden batched question lifecycle

* test: submit batched HITL answers in e2e

* fix: address batched question review findings

* fix: preserve invoke return typing
2026-08-11 01:06:16 -04:00
Danny Avila
a3cec67e08
🪆 feat: Add Parent Activity Phase Summaries (#14721)
* feat: add activity phase summaries

* fix: preserve activity phase lifecycle semantics

* fix: satisfy activity phase type checks

* fix: simplify activity phase status mapping

* style: format activity phase changes

* fix: rebase activity phase bounds after shaping

* fix: link activity phase trace ancestry

* fix: reconcile activity phase bounds

* style: format activity phase reconciliation test

* style: align activity phase assertion

* fix: retain reasoning across commentary

* fix: preserve activity phase boundary state

* fix: detect renderable phase children

* test: type parallel phase assertion

* chore: bump agents SDK for activity phases

* fix: retain unphased lane reasoning

* fix: preserve tool group expansion across phases

* style: format phase expansion regression

* fix: preserve phase interaction state efficiently

* perf: skip sparse phase segment holes

* perf: partition phase segments with offsets

* fix: preserve phase boundaries and cursor state

* test: align activity phase regressions with CI

* test: keep phase context mock hoist-safe
2026-08-10 13:41:37 -04:00
Danny Avila
7fc62023eb
🧷 fix: Safely Recover Runtime MCP OAuth Rejections (#14684)
* fix runtime MCP OAuth recovery

* style: sort LC-008 imports

* fix: single-flight runtime OAuth handlers

* fix: retain transport OAuth failures for recovery

* fix(mcp): preserve OAuth recovery connections

* test(mcp): type request-scoped config fixture

* fix(mcp): harden shared OAuth recovery

* fix(mcp): bound OAuth recovery escalation

* style(mcp): sort OAuth integration imports

* fix(mcp): harden OAuth recovery boundaries

* fix(mcp): abort shared recovery waiters

* fix(mcp): bound request OAuth recovery phases

* fix(mcp): close OAuth recovery ownership gaps

* fix(mcp): retry borrowers closed by OAuth recovery

* fix(mcp): drain borrowers before OAuth reconnect

* fix(mcp): preserve eviction across OAuth recovery

* fix(mcp): unify OAuth recovery leases

* fix(mcp): serialize cache reuse with recovery

* fix(mcp): make recovery checkout atomic

* test(mcp): use numeric config timestamp

* fix(mcp): reacquire recovery checkouts

* fix(mcp): retain shared recovery disposal

* fix(mcp): restart checkout after recovery takeover

* fix(mcp): close recovery lifecycle gaps

* refactor(mcp): deepen OAuth recovery lifecycle

* fix(mcp): harden OAuth lifecycle disposal

* style(mcp): sort OAuth lifecycle imports

* fix: lease MCP OAuth lifecycle edges

* fix(mcp): isolate shared OAuth flows from aborts

---------

Co-authored-by: Dennis Schenk <dennis@gridonic.ch>
2026-08-10 10:38:34 -04:00
Dustin Healy
87a8b9aa12
📡 feat: Route Web Search and Scrape Egress through the SSRF-safe Agent (#14606)
* feat(web-search): route outbound search and scrape requests through the SSRF-safe agent

Build the SSRF-safe agents at the web-search tool-assembly site and pass them into the
search tool config so outbound search and scrape connections are validated at connect
time against their resolved IP, on every hop including redirects, consistent with the
other outbound clients.

Add allowedAddresses to webSearchSchema, reusing allowedAddressesSchema, so self-hosters
can permit a deliberately-private search or scrape endpoint (for example a private
SearXNG instance). The field is resolved directly from the webSearch config at the
createSearchTool call site, not through loadWebSearchAuth, because it is config and not
an auth credential. webSearchSchema is flat (providers are chosen by enums, not by
counting keys), so the field is inert with respect to provider selection.

Document the field and its operator warning in librechat.example.yaml, and assert the
wiring in handleTools.test.js: the SSRF-safe agents are threaded into the search tool
config, allowedAddresses is passed through when set, and omitting it still threads the
agents with no exemptions.

TODO awaits @librechat/agents release with the httpAgent hook: this consumes optional
httpAgent/httpsAgent fields on the search-tool config that are not yet in a published
@librechat/agents. package.json is intentionally left at the current version; bump it to
the release that ships the hook before this lands. Validated locally against a revendored
@librechat/agents build, not a published release.

* 🛡️ fix: Apply allowedAddresses to the Web Search SSRF Preflight

The connect-time SSRF agent already honors webSearch.allowedAddresses, but
loadWebSearchAuth ran the isSSRFUrl preflight without it, so an admin-permitted
private search or scrape URL was stripped before the agent could ever use it.

Thread allowedAddresses and the URL's effective port through isSSRFTarget and
resolveHostnameSSRF so the exemption is consistent across both SSRF layers.

* 🛡️ fix: Validate Web Search Destinations and Defer to Configured Proxies

Handing agents to createSearchTool covered only the connect-time DNS lookup,
which Node skips for IP-literal hosts, and a configured proxy connects on our
behalf without running that check. A literal private target such as
http://169.254.169.254 could therefore reach the network.

Route every resolved web-search destination through the existing
applySSRFSafeAgentIfDirect contract so a blocked literal target throws before
any request is made, and withhold the agents when a proxy owns egress, since one
agent pair is shared by every provider and a direct-connect agent on a proxied
connection would break the request while asserting protection the proxy's
network context cannot provide.

* 🛡️ fix: Keep Web Search SSRF Agents Under a Proxy and Restore Pooling

Withholding the agents whenever a proxy was configured removed protection from
every direct and NO_PROXY destination in exchange for preventing a failure that
cannot occur: for an https target Axios substitutes its own CONNECT tunnel, so
the injected agent is never used for the proxy connection. Only a plaintext http
target keeps our agent and repoints it at the proxy, and only a proxy whose
hostname resolves private then trips the connect-time check.

Always pass the agents and exempt the proxy endpoint instead, deriving host:port
from the same PROXY, HTTP_PROXY, and HTTPS_PROXY resolution the rest of LibreChat
uses so the proxy hop stays reachable while destinations remain guarded. Axios
already applies NO_PROXY per request, so bypassed routes keep enforcement with no
extra logic.

Drop the load-time destination validation. It duplicated the isSSRFTarget
preflight for user-provided URLs, rejected admin values that were previously
legal, and threw from inside loadTools, where both loader wrappers swallow the
error and drop every tool for the turn rather than degrading web search alone.

Build the agents with keepAlive and cache them per exemption list. A bare
http.Agent does not pool, so the previous code replaced the pooled global agents
for every search, scrape, and rerank call and allocated a fresh pair per turn.

* 🛡️ fix: Reject IP-Literal Private Targets on Web Search Connections

Node resolves nothing for a literal host, so the connect-time lookup never saw
one: a destination or a redirect target given as http://169.254.169.254 reached
the network. Redirect hops pass through the same createConnection, so checking the
literal there covers both cases and removes the need for a maxRedirects control
that createSearchTool cannot accept.

Gate it behind blockLiteralHosts so only web search opts in. A caller that
reaches a proxy or a deliberate private service by literal address must exempt it
first, and the merged consumers of createSSRFSafeAgents have no such exemption, so
enabling this everywhere would break configurations that work today.

* 🛡️ fix: Keep IPv6 Brackets on Derived Proxy Exemptions

The exemption parser accepts an IPv6 entry only as [ipv6]:port, so stripping the
brackets produced fd00::1:3128, which carries three colons and is dropped as
malformed. An IPv6 proxy therefore stayed unexempted and the connect-time check
rejected it, failing every web-search request routed through it.

Use the URL hostname as parsed, which already carries the brackets.

* 🛡️ fix: Exempt Proxies Configured Through ALL_PROXY

Axios resolves a proxy through proxy-from-env, which falls back to all_proxy in
either case after <protocol>_proxy, so ALL_PROXY on its own is enough to route a
request through a proxy. Exemptions were derived from PROXY, HTTP_PROXY, and
HTTPS_PROXY only, leaving such a proxy unexempted and rejected with ESSRF.

Derive the exemptions from the full set of variables that can put a proxy in
front of these requests instead. The installed proxy-from-env 2.1.0 reads no
npm_config variables, so those are deliberately not included.

* 🛡️ fix: Drop the Unearned PROXY Exemption and Harden the Web Search Guard

Nothing on this path consumes PROXY: Axios resolves proxies through
proxy-from-env, which reads only <protocol>_proxy and all_proxy, and web search
never calls applyAxiosProxyConfig. Exempting it therefore granted a bypass rather
than preserving a working route, and a user-settable search URL that redirects to
that address reached it and returned the body. Remove PROXY and proxy, and skip a
socks endpoint for the same reason, since Axios cannot proxy through one.

Tolerate a non-array allowedAddresses instead of spreading it, which threw out of
loadTools and dropped every tool for the turn. The YAML path is schema-validated
but the admin override path merges without parsing, so the value is reachable.

Separate cache keys with NUL rather than a newline, so an entry containing a
newline cannot collide with two separate entries, and bound the cache. Give the
agents the idle timeout the global agents carry, which keepAlive alone did not
restore. Reject a unix socket, which carries no host to validate. Also treat
fec0::/10 site-local as private, matching the fe80::/10 handling beside it.

Exercise the real resolver in handleTools.test.js rather than mocking it, so the
wiring test now fails if the agents it threads do not actually block a private
target.

* 🛡️ fix: Derive Proxy Exemptions Through Axios's Own Resolver

Unioning every populated proxy variable exempted addresses that never carry a
request. proxy-from-env picks a protocol-specific variable before all_proxy and
lowercase before uppercase, so an ignored value became a trusted host:port that a
redirect onto a direct route could reach. It also normalizes a scheme-less value
such as proxy.internal:3128 to an http URL, where parsing the raw string yielded
an empty hostname and no exemption at all, breaking the proxy hop.

Resolve through getProxyForUrl, the entry point Axios itself calls, so precedence,
scheme normalization, and NO_PROXY match exactly and cannot drift. NO_PROXY
covering everything now yields no exemption, since nothing is proxied. Declared
locally rather than adding a types package, alongside the existing declaration in
the same directory.

Also revert the fec0::/10 site-local change. domain.spec asserts that boundary
deliberately to prove the fe80::/10 mask does not over-reach, and the shared
address schema still classifies fec0 as public, so a runtime block there would
leave operators unable to configure the exemption. It belongs with those two
together, not in this PR.

* 🛡️ fix: Resolve Proxy Exemptions Against the Real Destinations

Resolving against placeholder probe hosts applied destination-specific NO_PROXY
rules to a host nobody dials. With NO_PROXY matching the probe domain but not a
real provider, no exemption was derived even though Axios still proxied the actual
request, so the agent rejected the private proxy hop with ESSRF.

Resolve per configured destination instead, passing the values loadWebSearchAuth
already resolved. Only plaintext http destinations are considered, since for an
https destination Axios substitutes its own CONNECT tunnel and never uses the
injected agent for the proxy connection, which is also why provider defaults need
no exemption: every one of them is https.

* 🛡️ fix: Accept Embedded-IPv4 IPv6 Forms in the Address Exemption Schema

The runtime guard blocks 6to4, NAT64, and Teredo addresses whose embedded IPv4 is
private, but the schema's local copy recognized only ULA, link-local, and the
dotted IPv4-mapped form, so an entry such as [64:ff9b::a00:1]:8080 was dropped as
a public literal. An operator reaching a private endpoint that way could not
configure the exemption at all.

Mirror hasPrivateEmbeddedIPv4 in the schema helper, which the surrounding comment
already asks to keep in sync. Public embedded addresses stay rejected, since an
exemption there has no defensive purpose.
2026-08-10 10:33:54 -04:00
Danny Avila
54d7f04d71
🪶 feat: Resolve Explicit Subagents Lazily (#14714)
* feat: resolve explicit subagents lazily

* fix: satisfy lazy subagent type checks

* test: persist lazy subagent mutation through model API

* style: format lazy subagent persistence test

* fix: log lazy subagent depth limit failures

* fix: harden lazy subagent resolution

* fix: Yield during lazy cancellation test

* test: Synchronize lazy cancellation setup

* style: Format lazy cancellation test
2026-08-09 19:23:45 -04:00
Danny Avila
6bff5ba148
🧬 fix: Normalize Legacy MCP Null Headers (#14720)
* fix: normalize legacy MCP null headers

* Move TokenExchangeMethodEnum import to a new position
2026-08-09 09:07:29 -04:00
Marco Beretta
152dcf4721
🔗 feat: Shared Conversation Badge and Stable Share Links (#14712)
* feat: improve shared conversation links

* test: Cover Shared Link Lifecycle

* test: Cover Shared File Snapshots

* fix: address review findings on shared links

Stop double-decoding the conversation search term. Express already decodes
req.query, so the route's extra decodeURIComponent threw URIError on any term
containing a bare percent sign and mangled percent-escape-looking text. The
sidebar already sent the term raw, so this failed there too.

Advance a share's stored target to its branch tail when an update omits one.
Updating from the conversation list could not resolve the tail and reused the
stored target verbatim, silently republishing the same snapshot instead of the
turns added since.

Require revalidation on shared files. Updates now keep the shareId, so the file
URL no longer changes and a cached response could outlive a revoked share-files
choice; an ETag over the pinned snapshot fields keeps unchanged files on 304.

* fix: keep the shared badge across conversation cache replacements

isShared is derived per list request and absent from single-conversation
payloads, so rename, pin, and the SSE conversation updates dropped it when they
swapped a server response into the sidebar cache, hiding the badge until an
unrelated list refetch. Carry the cached value forward in updateConvoInAllQueries
so every replacing caller is covered, while an explicit value still wins.

* test: mock syncStaticTools in server boot specs

initializeMCPs now calls syncStaticTools when no MCP servers are configured, but the server boot specs stub ~/server/services/Config without it. Post-listen initialization threw, hit process.exit(1), and took the jest worker down until it exceeded the retry limit.

* fix: address codex findings on the shared DataTable and file ETag

Keep the published DataTable export bound to the legacy component and ship the design-system table as VirtualizedDataTable, so external consumers of @librechat/client keep the props they compile against.

Fold the snapshot's stored location into the shared-file ETag, so a re-published output that keeps its size and revision but moves its object no longer revalidates to a stale 304.

Auto-fill the table when a first page is too short to overflow its container, since pagination is otherwise only reachable through the scroll handler.

* fix: re-scope share grants before publishing and retry stalled auto-fill

Move the shared-link ACL expiration write ahead of the content update. The shareId survives an update, so a failed ACL write after the write-through left the new messages and file snapshot readable at the same URL while the owner saw a 500.

Retry a rejected auto-fill fetch up to three times: an unscrollable table has no scroll event to fall back on, and the sentinel alone would strand it on the first page.

* fix: follow regenerated branches and pin forks to the payload they saw

advanceTargetToBranchTail only walked descendants, so a target replaced by a regeneration (a sibling, not a child) left the update parked on the obsolete branch and published none of the turns that followed. A childless target now hops once to the newest sibling the conversation continued under.

A shareId survives an update, so an owner republishing between a viewer's load and their Continue click would resolve targetMessageIndex against different messages. The fork request now carries the payload's updatedAt and is rejected with 409 when it no longer matches; the viewer gets the current version pulled in and can retry.

* fix: keep table sorting and legacy backfills from breaking share flows

Restore the union formatting a local lint-staged prettier collapsed in data-provider types, which broke the CI lint run.

Header clicks now toggle direction instead of cycling through an unsorted state, which the controlled tables translated straight back into the default and made one direction unreachable.

Re-arm the auto-fill guard on a sort change: a re-sorted first page arrives with the same row count, and the guard would otherwise suppress paging on a container that still cannot scroll.

Lazy fileSnapshots backfills no longer touch updatedAt. That timestamp is the revision a viewer's fork is validated against, so a legacy share's first read would have made the Continue click that followed it fail with a 409.

* fix: break pagination ties by id and reset share state per conversation

Both list cursors marked a page boundary with values that repeat: conversations by (sort field, updatedAt) and shared links by the sort field alone. Imported chats share a title and a timestamp, so every row tied with the boundary was skipped. Both now carry the boundary row's _id and sort by it last, and the shared-links cursor is an opaque composite the route still validates before querying.

The share dialog outlives a switch between conversations, so a link with files disabled left the next conversation's dialog showing the switch off and quietly published without files. The stored choice now falls back to the enabled default, and a stale link no longer sits in the copy field.

* fix: keep titleless shared links in the paginated list

A share has no title default, and BSON orders a missing title before every string, so encoding the boundary as an empty string skipped the remaining untitled links when sorting Name ascending and re-admitted all of them descending.

The cursor now carries the boundary's null rather than flattening it, and because $lt and $gt are type-bracketed against a string, descending adds an explicit clause for the untitled tail that a string comparison can never reach.

* style: sort share method imports

* fix: fail closed on orphaned share targets and guard snapshot backfills

getMessagesUpToTarget walked levels from the roots and returned everything it had accumulated when the target was never reached. An imported or partially deleted branch whose parent is missing therefore published the whole conversation instead of the selected branch; the walk now returns nothing unless it actually reaches the target.

A lazy backfill wrote fileSnapshots unconditionally, so a viewer's first read of a legacy link could land after a republish and restore the snapshot it replaced, re-authorizing the stable URL of a file the owner had just removed. The write is now conditional on the link still having no snapshot, and the stored one wins any race.

Regenerating a message above the shared tail leaves the whole stored branch childless, so the target walk now climbs to the closest ancestor the conversation continued under instead of stopping at the stored tail's own siblings.

Changing the search or sort also returns the table's viewport to the top, since the query holds the previous rows while it refetches.

* fix: page through titleless rows on both sides of the cursor

The route validator still required a string primary, so the composite cursor the data layer issues for a titleless boundary came back as a 400 and the shared-links table stopped at that page.

Conversations had the same type-bracketing gap the shared links just closed: a name-sorted page could not reach conversations with no title, since a comparison against a string never matches a missing field. The cursor now carries the null and the filter spells out the titleless clauses for both directions.

* fix: keep the share badge read-only and refresh rows on cell changes

ensureLinkPermissions re-granted the owner ACL entry on every call, so rendering the header's shared badge turned ordinary navigation into a permission write. It now checks for the grant first and only migrates a link that still lacks one.

A fork carrying a positional target but no revision falls back to the whole share, since nothing proves which payload the index was counted against.

The memoized table row compared row data and selection only, so a cell rendering external state (the archived list's pending Restore, for one) kept its stale rendering until the row object itself moved; rows now also compare a marker that moves with the column definitions.

* fix: keep the shared badge honest when a delete fails or a link remains

A failed delete left the conversation looking unshared: the optimistic snapshot covered only the shared-link queries, not the conversation caches the badge reads. The cleared conversations are now restored with the rest.

A conversation can hold one link per target message, so clearing the badge on delete is a guess. The conversation list is invalidated once the mutation settles, letting the server decide from the links that are actually left.

* fix: refetch every cached conversation page after deleting a link

The invalidation was pinned to page zero, so a conversation cached further down the sidebar kept the badge the optimistic update had already cleared even when another targeted link survived.

* fix: treat a failed page fetch as a failed auto-fill

React Query resolves fetchNextPage with an error result instead of rejecting, so the rejection handler never ran: the guard stayed armed on the unchanged row count and an unscrollable table could never reach the next page.

* refactor: move the share request helpers into the typed backend

Cursor validation, page-size clamping and the shared-file cache validator were plain backend logic sitting in the legacy JS route. They now live in packages/api with their own tests, and the route keeps only the Express-side wiring: reading query params, mapping domain error codes to status codes, and writing the response.

Also carries the requested file choice into the cache entry the create and update mutations synthesize, since the response never echoes it and the dialog reads a resolved entry with no choice as the enabled default.

* fix: hold auto-fill while the replacement page is in flight

A search or sort swap keeps the previous rows and hasNextPage on screen while the new first page loads, so the re-armed auto-fill asked for page two against a query that was still fetching its first. An infinite query runs one fetch at a time, so that request could cancel or interfere with the one already out. Both tables now pass their fetching state and the guard waits for it.

* fix: stop advertising links a deployment no longer serves

The sidebar badge rendered from the derived flag alone, so a deployment that turned shared links off still told owners a link was live while the public routes were unregistered.

The share dialog called the link a snapshot, but the payload populates the referenced message documents on every request: an edit to an already-shared message is visible immediately, and Update only adds newly referenced ones. The copy now says that.

Scroll pagination inspects a resolved error the way auto-fill already does, since React Query reports a failed page that way instead of rejecting.

* a11y: gate the shared conversation label on the feature flag

The icon stopped rendering when a deployment turns shared links off, but the row still announced the conversation as shared to screen readers. Both now read the same condition.

* fix: accept long title cursors and stop badge work the feature disables

The cursor cap was tight enough that a Name-sorted page ending on a long title produced a nextCursor the next request rejected, stranding the rest of the list. It now sits well clear of anything the server can issue.

The conversation list skipped straight into the shared-link lookup even where ALLOW_SHARED_LINKS is off, paying a round trip on the sidebar's first page for a badge that is never rendered.

A regeneration is newer than what it replaced, so only a newer sibling counts: an older one that still has follow-ups is the branch the target was regenerated away from, and resuming there published turns the target had excluded.

* fix: hold scroll pagination while a replacement page loads

Resetting the viewport to the top after a search or sort change fires a scroll event, and the retained previous rows still report another page, so the handler asked for page two of a query that was still loading page one.

* fix: keep the legacy share migration ahead of the owner-grant shortcut

A legacy row keeps its marker until every grant it needs exists, so an owner grant on its own is not proof the migration finished. Reading the marker first means a half-migrated public link still gets its public grant, while a fully migrated one keeps the read-only settled path the badge lookup depends on.
2026-08-09 08:14:54 -04:00
Danny Avila
5c939d129b
🔌 feat: Add Agent Plugins (Experimental) (#14704)
* 🔌 feat: Add Agent Plugins v1.0.0 Support

Implements the Agent Plugins 1.0.0 specification so LibreChat can load
portable plugin packages: a `plugin.json` manifest, `skills/` holding Agent
Skills, `mcp.json` describing MCP servers, and reverse-domain extension
directories.

- Validate the closed `plugin.json` schema, selecting rules from `$schema`
  without retrieving it. Unknown top-level fields and a non-object
  `extensions` field are reported and ignored; every other violation rejects
  the plugin.
- Enforce plugin-root containment through realpath, including for paths whose
  leaf does not exist, and apply the narrowest failure boundary per component.
- Map `mcp.json` onto LibreChat MCP options across stdio, Streamable HTTP, and
  legacy HTTP+SSE, bypassing the config loader's `${VAR}` process-env
  expansion so plugin values never resolve against the server environment.
- Expand only `${PLUGIN_ROOT}` and `${PLUGIN_DATA}`, once and non-recursively,
  in `args`, `env` values, and `cwd`; supply both variables to the subprocess
  after configured `env`, and reject entries that declare them.
- Discover skills from the immediate children of `skills/` only, reusing the
  deployment skill loader so plugin skills are ordinary deployment skills with
  a distinct id namespace.
- Read LibreChat's `ai.librechat` extension directory and hand
  `hooks/hooks.json` to the Claude hook compatibility layer.
- Load operator-installed plugins from `DEPLOYMENT_PLUGINS_DIR` at startup,
  merging their skills into the deployment skill registry and their MCP
  servers into the app config. Plugins never displace a configured server or
  deployment skill.
- Add `cwd` to the stdio MCP transport, which the specification requires and
  LibreChat did not previously support.

Component failures stay isolated: a malformed `mcp.json`, an invalid skill, or
a bad hooks document never prevents the rest of a plugin from loading.

* 🔒 fix: Contain Agent Plugins config at the runtime boundary

Review of #14704 surfaced that every real finding sat where the loader's
output crosses into LibreChat's existing runtime, not in the specification
logic. The loader deliberately left plugin placeholders literal, but
downstream layers re-processed the same fields and undid it.

- Mark plugin MCP configuration with `source: 'plugin'` and return it verbatim
  from `processMCPEnv`. Without this a remote plugin could declare
  `Authorization: Bearer ${OPENAI_API_KEY}` and receive host credentials at its
  own origin. The gate reads the configuration rather than a caller-supplied
  flag, so no future call site can reintroduce the leak by omitting it.
- Skip `preProcessGraphTokens` for plugin configuration as well; it resolves
  placeholders into headers, url, and args on the same path.
- Reject plugin server names that change under `normalizeServerName`. Tool keys
  embed the normalized name while request-time resolution uses the raw name, so
  an unstable name published tools that nothing could resolve.
- Reject `__proto__`, `constructor`, and `prototype` as server names, and merge
  plugin servers with `Object.defineProperty` and an own-property conflict
  check, so a package cannot reach a prototype setter or collide with an
  inherited member.
- Enforce manifest-name uniqueness before components are accepted; two packages
  sharing a name would share one `PLUGIN_DATA` directory.
- Isolate a failed data-directory creation to the single plugin instead of
  rejecting the whole scan.
- Prefix rejected-plugin diagnostics with the directory, which is the only
  identifier a package without a valid manifest has.
- Type extension namespace contents as JSON rather than `unknown`, and correct
  the header field-value comment to name obs-text.

Verified end to end from the built package: a plugin declaring an environment
placeholder in a header reaches the transport with the placeholder intact while
operator-authored configuration still resolves normally.

* 🔇 fix: Report Agent Plugin hooks that will not run

The loader reads `ai.librechat/hooks/hooks.json`, but nothing registers the
resulting plan, and startup supplies no hook capabilities. A package declaring
hooks was therefore accepted in silence, leaving an operator to believe the
hooks ran.

Detect the document when no capabilities are registered and report it as
unsupported, so the limitation is visible in startup diagnostics rather than
inferred from behavior that never happens.

* 🧯 test: Restore MCP startup test mocks

Carries the two mock additions from #14711 so this branch can prove itself
green. `initializeMCPs` now calls `syncStaticTools`, which the server startup
specs do not stub, so they fail on every branch that has not picked this up.
Drops out of the rebase once #14711 lands.

Co-authored-by: Danny Avila <danny@librechat.ai>
2026-08-09 08:10:22 -04:00
Danny Avila
1bd4455c2d
🧭 fix: Make MCP Catalog Redis Cluster-Safe (#14717)
* fix: make MCP catalog Redis startup cluster-safe

* fix: stabilize Redis readiness gate

* fix: type Redis readiness export

* style: apply canonical import order
2026-08-09 06:59:29 -04:00
Danny Avila
ed9542ed75
🧬 fix: Rebind Request Context After Remote Agent Auth (#14685) 2026-08-08 14:27:22 -04:00
Danny Avila
1bccc2bc18
📡 fix: Refresh MCP Tools After List-Changed Notifications (#14686)
* fix(mcp): handle dynamic tool list changes

Co-authored-by: Pascal Garber <pascal@artandcode.studio>

* test(mcp): fix CI validation

* fix(mcp): keep dynamic tool catalogs live

* fix(mcp): harden dynamic catalog lifecycle

* test(mcp): use typed startup connection

* test(mcp): isolate dynamic e2e fixtures

* fix(mcp): refresh tools after reconnect

* fix(mcp): close dynamic catalog cache gaps

* test(mcp): update OAuth connection mocks

* fix(mcp): preserve app snapshot ownership

* style(mcp): sort connection imports

* fix(mcp): close review race conditions

* fix(mcp): preserve cache ownership edges

* fix(mcp): harden recovery lifecycle

* fix(mcp): guard tool-less app refresh

* fix(mcp): fence distributed cache races

* fix(mcp): retire stale connection state

* fix(mcp): keep tool snapshots authoritative

* fix(mcp): fence stale app tool publications

* style(mcp): sort repository test imports

* test(mcp): mock empty startup publication

* fix(mcp): preserve app publication generations

* fix(mcp): harden publication recovery races

* fix(mcp): address tool catalogs by runtime config

* fix(mcp): load scoped catalogs for assistant writes

* fix(mcp): harden catalog publication recovery

* fix(mcp): serialize forced connection replacement

* fix(mcp): serialize ordinary creation with replacements

* fix(mcp): harden catalog fallback boundaries

* fix(mcp): close lifecycle fencing gaps

* fix(mcp): preserve catalog authority on failures

* fix(mcp): compensate failed catalog mutations

* fix(mcp): fence catalog refresh ordering

* style(mcp): sort agent loader imports

* fix(mcp): cancel stale connection creation

* fix(mcp): fence catalog coordination

* fix(mcp): close catalog race windows

* fix(mcp): harden cross-pod catalog fencing

* fix(mcp): close catalog lifecycle edges

* style(mcp): sort assistant imports

* fix(mcp): reject stale recovery authority

* fix(mcp): restore static catalog on every startup

* fix(mcp): order app catalog publications

* style(mcp): sort catalog revision imports

* fix(mcp): separate catalog allocation and commit fences

---------

Co-authored-by: Pascal Garber <pascal@artandcode.studio>
2026-08-08 13:50:21 -04:00
Danny Avila
ef38f362ec
📦 chore: bump @librechat/agents to v3.4.2 and npm audit (#14702)
* 📦 chore: bump `@librechat/agents` to version 3.4.2

* 📦 chore: bump `mermaid` to version 11.16.1 and update related dependencies

* 📦 chore: bump `js-yaml` to version 4.3.1 in package-lock and data-provider

* 📦 chore: bump `nanoid` to version 3.3.18 in package.json and package-lock.json across multiple packages

* 🔧 fix: Remove stray `api/tsconfig.json` breaking e2e `~` alias

An empty `api/tsconfig.json` was accidentally committed with the agents bump.
Playwright's require hook resolves path aliases from the nearest path-config,
checking `tsconfig.json` before `jsconfig.json` in each folder, so the empty
file shadowed `api/jsconfig.json` — the only place `"~/*": ["./*"]` is defined.

Every e2e spec that calls `cleanupUser` then failed on
`Cannot find module '~/cache/getLogStores'` from `api/models/index.js`.

- delete the stray file and gitignore it so tooling can't re-commit it
- register `module-alias` in `cleanupUser` so backend requires resolve
  regardless of which path-config Playwright happens to find

* 📦 chore: bump `@librechat/agents` to version 3.4.3 in package.json and package-lock.json
2026-08-08 12:24:06 -04:00
Danny Avila
493ffced46
🪝 feat: Add Claude Hook Compatibility Layer (#14412)
* feat: add Claude hook compatibility layer

* fix: satisfy API declaration build

* fix: normalize hook matchers and conditions

* fix: align Claude hook lifecycle semantics

* fix: preserve Claude hook execution semantics

* fix: gate unsupported Claude hook controls

* fix: refine Claude payload and matcher translation

* fix: scope Claude hook conditions to tool events

* fix: preserve mixed Claude hook documents

* fix: honor Claude hook execution controls

* fix: close Claude hook lifecycle gaps

* fix: isolate Claude hook declaration state

* fix: preserve Claude matcher semantics

* fix: handle PreemptBoundary in plugin hook payload switch

`PreemptBoundary` joined `HOOK_EVENTS` in @librechat/agents 3.4.2. It has no
Claude counterpart and is absent from the compatibility EVENT_MAP, so it can
never reach a registered declaration, but the payload switch must stay
exhaustive so a future event fails the build rather than returning undefined.
2026-08-08 07:13:11 -04:00
Marco Beretta
39f5f9d846
perf: Agent List and Model Selector at Scale (#14601)
* perf: cut serial round trips from the agent list query path

The agent list was the slowest path on first page load. Three separate
problems compounded:

- `getListAgentsHandler` chained its reads: two ACL lookups, the avatar
  refresh cache probe and the viewer skill scope all resolved serially
  ahead of the list query, and `attachOwnerContacts` added two more hops
  after it. The four independent reads now resolve together, and the
  avatar refresh runs alongside the list query instead of before it -
  refreshed paths reach the response through `urlCache`, not through
  whatever the list query happened to read. Serial hops per request drop
  from 7 to 4 on a warm cache.

- The avatar refresh loaded the user's whole accessible agent set (up to
  MAX_AVATAR_REFRESH_AGENTS) to discover which entries were S3-backed.
  Scoping the query to `avatar.source` means deployments on any other
  file strategy match nothing instead of walking the full set.

- `fetchAllAgentPages` walked cursor pages at the server's default size
  of 100, and callers consume the flattened result, so every extra page
  was a serial round trip for no benefit. It now requests the server
  maximum. Measured over a 2,860 agent account: 29 requests / 1.65s
  before, 3 requests / 0.29s after.

Also parallelizes the conversation file reads in `initializeAgent`. The
convo file refs and the execute_code thread walk share no inputs, and the
two code-file lookups depend only on `threadFileIds`, so the chain of six
serial reads on every turn collapses to two. This one is time to first
token the user waits through.

* perf: virtualize the model selector agent list

Opening the agents submenu with a large agent set froze the tab and could
kill it outright. With ~10k accessible agents the submenu blocked for over
15 seconds and took the heap from 96MB to 911MB. Four per-row costs were
being multiplied by the full list, which rendered unwindowed:

- `useIsActiveItem` allocated a MutationObserver per row (10,016 of them
  for one dropdown). Replaced with an Ariakit store subscription, which
  needs no observer at all and returns a boolean so a row only re-renders
  when its own active state flips.

- `useFavorites` ran per row, opening a jotai subscription, a query
  subscription and a mutation each time. Hoisted to one call per endpoint.

- Each row rescanned `endpoint.models` to recover `isGlobal`, a field the
  parent had already discarded from the array it was mapping. The parent
  now passes it down from a lookup map.

- The list itself is now windowed above 100 rows. Ariakit's composite only
  knows about mounted rows, so arrow-keying to the window edge previously
  found no next item and let focus escape the nested menu, closing it;
  `handleBoundaryNavigation` scrolls the next index in, waits for it to
  mount, then moves the composite onto it. Navigation inside the window is
  left to Ariakit.

Open drops from >15s to 96ms, mounted rows from 10,028 to ~18, DOM nodes
from 123,346 to ~1,000, and the heap no longer grows. Verified in browser:
arrow keys track 1:1 to index 238 and back, and click selection works.

* perf: serve the model selector from the shared VIEW agent query

The model selector asked for EDIT-scoped agents whenever the marketplace
is enabled, while `useAgentsMap` and `useMentions` asked for VIEW. Since
the cache key includes the params, that was two distinct entries, so first
page load ran the paginated walk twice and held two copies of the whole
agent list in memory. Measured against a 10k agent account: 22 list handler
invocations per page load, now 11.

Collapsing the two by asking for the same permission everywhere would have
changed what the selector shows - under the marketplace the EDIT scope is
what makes it "My Agents", with discovery handled by the marketplace entry.
So the list endpoint now marks each row with `isEditable`, resolved from an
ACL read folded into the existing parallel batch (no extra serial hop), and
the selector filters the shared VIEW response instead of refetching. A
VIEW-scoped list for a user with 2861 visible / 361 editable agents returns
exactly 360 rows flagged editable, matching what the EDIT query returned.

`AgentSelect` deliberately keeps its own EDIT query: it reads `skills` and
`skills_enabled`, which `sanitizeViewerSkillScope` strips from VIEW-scoped
responses. It also only mounts when the builder panel is open, so it is not
part of the first-load cost.

The field is set unconditionally rather than omitted when false so that a
client talking to an older server sees `undefined`, keeps every agent, and
degrades to showing too many rather than none.

* fix: address review findings on the agent list at scale

Three issues from review, all confirmed against the code before fixing.

Avatar refresh no longer runs alongside the list query. `updateAgent` writes
through `findOneAndUpdate` on a `timestamps: true` schema, so refreshing an
avatar advances `updatedAt` — the field `getListAgentsByAccess` sorts and
cursors on. A write landing after the first page's snapshot moved that agent
ahead of the returned cursor, dropping it from every later page and silently
truncating the caller's flattened list. This was a regression introduced when
the two were parallelized; serializing them costs nothing on the common path,
because a cache hit returns without issuing any query, so only the
once-per-30-minutes miss pays for the ordering. The new test asserts the write
lands before the list snapshot and fails against the parallel version.

The virtualized list no longer inserts a focusable grid into the combobox.
`List` spreads its props onto `Grid`, whose defaults are `role="grid"`,
`containerRole="row"` and `tabIndex={0}`; inside Ariakit's listbox that added a
tab stop ahead of any row and put grid/row semantics between the listbox and its
options. All three are now neutralized so focus and ARIA stay with the combobox
items.

The list also resets to the top when the filter changes. `Grid` keeps its scroll
offset across prop changes and clamps an out-of-range offset to
`totalRowsHeight - height`, the end of the shorter list. Scrolling deep and then
searching landed on the tail: measured at row 626 of 667 matches, with only
those rows mounted and reachable by keyboard. Keying the list on the search
value restores row 0.

* fix: declare option position and set size for the virtualized model list

Once the model list is windowed, only the mounted slice exists in the listbox,
so a screen reader infers position and total from ~19 elements instead of the
real set — announcing "3 of 19" partway through 10,014 agents.

Model rows now carry aria-posinset and aria-setsize. The marketplace entry and
any model specs share the same numbering, because they are options in the same
listbox: declaring the values on some options while leaving others to be
inferred from the DOM would make the set internally inconsistent. Both are
omitted entirely when the list is short enough to render unwindowed, where the
DOM holds every option and the implicit values are already correct.

Verified against a 10,014 agent account: the marketplace entry reports 1 of
10015, the first models 2 and 3, and after scrolling to row 4999 the leading
mounted model reports 5001 of 10015 with 19 options in the DOM.

* 🩹 fix: Address Follow-Ups on the Agent List at Scale

Corrects residual issues in the agent-list perf work, all inside its own scope.

- Forward `idOnTheSource` through `PermissionService.findAccessibleResources`
  so `getUserPrincipals` skips the user-document read. The list handler resolves
  three permission sets per request and each was paying its own `User.findById`;
  the auth strategies already normalize the field to a value or null.
- Gate the editable-set lookup on its own predicate instead of borrowing
  `canReturnSkillConfig`. The two answer unrelated questions and only coincide
  today, so redefining the skill flag would have marked every agent editable.
- Log mapping failures in the list response instead of swallowing them.
- Apply the walk page size after the caller's params in `fetchAllAgentPages`.
  A caller limit only changed page size, never what the flattened walk returned,
  so `defaultAgentParams`' `limit: 10` would have turned one request into 301.
- Carry `isEditable` on the agent rows the create and update mutations write
  into the list cache. Mutation responses omit the field, so those rows lost it.
- Document `isEditable` as list-only, ACL-derived, and fail-open on absence.
- Restore the truthiness guard on the thread walk in `initializeAgent`. Widening
  it to `!= null` made an empty `parentMessageId` issue a full-conversation read
  against an anchor that can never match.
- Await `getConvoFiles` directly rather than calling `.then()` on it, restoring
  tolerance for synchronous test doubles.
- Correct the avatar-refresh comment: the projection was never full documents,
  and the real reason to filter is that an unfiltered budget is self-reinforcing.

Tests: both new `initialize` tests and both new backend tests are
mutation-verified; the concurrency test fails under either serialization order.

* fix: preserve ACL isEditable when merging agent mutation responses

Mutation responses omit list-only isEditable. Inferring true from write
success promoted VIEW-only rows into the editable subset for MANAGE_AGENTS
callers who can PATCH agents their ACL marks non-editable.

* fix: sort imports in agent mutations test

ESLint import-order check failed on the isEditable cache-preservation test.

* 🧷 fix: Carry isEditable Onto Duplicated Agent List Rows

`useDuplicateAgentMutation` prepended the raw duplicate response to the cached
list, and mutation responses omit the list-only `isEditable` field. The row
survived the "My Agents" filter only by failing open on `undefined`, so it would
disappear the moment a consumer read the flag strictly.

Duplicating grants the caller ownership, so the new row is editable outright;
this is the create case rather than the merge case `mergeAgentListRow` handles.
Last cache write on this path that did not carry the field.

---------

Co-authored-by: Danny Avila <danny@librechat.ai>
2026-08-07 21:04:55 -04:00