Enhanced ChatGPT Clone: Features Agents, MCP, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain, DALL-E-3, OpenAPI Actions, Functions, Secure Multi-User Auth, Presets, open-source for self-hosting. Active. https://librechat.ai/
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Dustin Healy 8fcab7e44f
🔄 fix: Recover Missing MCP Marketplace Catalogs (#15323)
* fix: recover missing MCP marketplace catalogs

* fix: make MCP catalog recovery passive

* test: type MCP catalog recovery fixtures

* fix: bound and back off passive MCP catalog recovery

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-08-30 06:55:30 -04:00
.claude/skills 🪝 feat: Execute Agent Plugin Command Hooks (#14755) 2026-08-12 13:21:15 -04:00
.devcontainer 🐳 chore: Upgrade Docker Builds To Node 24 (#13448) 2026-06-01 10:03:18 -04:00
.github 🪥 chore: Run CI's Static Checks on Each Commit's Diff (#15303) 2026-08-28 10:08:37 -04:00
.husky 🪥 chore: Run CI's Static Checks on Each Commit's Diff (#15303) 2026-08-28 10:08:37 -04:00
.vscode
api 🔄 fix: Recover Missing MCP Marketplace Catalogs (#15323) 2026-08-30 06:55:30 -04:00
client 🔊 fix: Autoplay Latest Message for Browser TTS and short responses (#15347) 2026-08-30 06:54:16 -04:00
config 🪥 chore: Run CI's Static Checks on Each Commit's Diff (#15303) 2026-08-28 10:08:37 -04:00
e2e 🤖 feat: make Event Actor HITL durable (#15305) 2026-08-28 08:05:11 -04:00
helm 🛫 refactor: Promote Generation Protocol V2 Automatically (#15324) 2026-08-28 17:17:09 -04:00
otel/langfuse-fanout 🩻 feat(langfuse): add tenant export telemetry (#15247) 2026-08-26 07:38:30 -04:00
packages 🔄 fix: Recover Missing MCP Marketplace Catalogs (#15323) 2026-08-30 06:55:30 -04:00
redis-config
scripts 🪥 chore: Run CI's Static Checks on Each Commit's Diff (#15303) 2026-08-28 10:08:37 -04:00
search 🐋 chore: add opt-in alternative local stack experiments (#14678) 2026-08-07 10:40:58 -04:00
skill 🗂️ feat: Add Deployment Skill Directory (#13523) 2026-06-05 10:24:28 -04:00
src/tests
utils 🐳 chore: Update image registry references in Docker/Helm configurations (#12026) 2026-03-02 22:14:50 -05:00
.dockerignore
.env.example 🛫 refactor: Promote Generation Protocol V2 Automatically (#15324) 2026-08-28 17:17:09 -04:00
.gitattributes 🎛️ feat: DB-Backed Per-Principal Config System (#12354) 2026-03-25 19:39:29 -04:00
.gitignore 🧪 test(e2e): add Bombadil property exploration (#14462) 2026-08-10 02:11:06 +02:00
.nvmrc 🐳 chore: Upgrade Docker Builds To Node 24 (#13448) 2026-06-01 10:03:18 -04:00
.prettierrc
AGENTS.md 📐 docs: Make CLAUDE.md Portable and Restore AGENTS.md Parity (#15046) 2026-08-20 17:28:49 -04:00
bun.lock ⬆️ chore: Bump @librechat/agents to v3.6.0 (#14890) 2026-08-16 09:15:35 -04:00
CLAUDE.md 📐 docs: Make CLAUDE.md Portable and Restore AGENTS.md Parity (#15046) 2026-08-20 17:28:49 -04:00
CONTEXT.md 📬 feat: Establish Background Continuation Admission (#15348) 2026-08-30 06:51:36 -04:00
deploy-compose.langfuse-fanout.yml 🪭 feat: support per-run central langfuse export suppression (#14207) 2026-07-12 08:03:27 -04:00
deploy-compose.yml 🫆 chore: Remove Published Credential Defaults (#14680) 2026-08-07 07:25:05 -04:00
docker-compose.langfuse-fanout.yml 🪭 feat: support per-run central langfuse export suppression (#14207) 2026-07-12 08:03:27 -04:00
docker-compose.override.yml.example 🐳 chore: Update image registry references in Docker/Helm configurations (#12026) 2026-03-02 22:14:50 -05:00
docker-compose.yml 🫆 chore: Remove Published Credential Defaults (#14680) 2026-08-07 07:25:05 -04:00
Dockerfile 🚀 chore: Prepare v0.8.8-rc1 (#14394) 2026-08-14 03:24:59 -04:00
Dockerfile.multi 🚀 chore: Prepare v0.8.8-rc1 (#14394) 2026-08-14 03:24:59 -04:00
eslint.config.mjs 🎨 feat: Refine Client Colors and Sharing Dialogs (#14734) 2026-08-10 22:43:57 -04:00
librechat.example.yaml 📬 feat: Establish Background Continuation Admission (#15348) 2026-08-30 06:51:36 -04:00
LICENSE 🗒️ docs: Update LICENSE.md Year: 2025 -> 2026 (#12554) 2026-04-08 09:12:44 -04:00
package-lock.json 📦 chore: bump @librechat/agents to v3.7.8 (#15337) 2026-08-29 16:17:15 -04:00
package.json 🪥 chore: Run CI's Static Checks on Each Commit's Diff (#15303) 2026-08-28 10:08:37 -04:00
rag.yml 🐳 chore: Update image registry references in Docker/Helm configurations (#12026) 2026-03-02 22:14:50 -05:00
README.md 🚀 chore: Prepare v0.8.8-rc1 (#14394) 2026-08-14 03:24:59 -04:00
README.zh.md v0.8.7-rc1 (#13592) 2026-06-15 13:10:30 -04:00
tool-intent-spec.md 🎯 feat: Tool Intent Label Capability (tool_intents) (#14499) 2026-07-29 15:40:52 -04:00
turbo.json 🌯 chore: Retire Rollup-Era devDependencies After tsdown Migration (#14496) 2026-07-28 22:08:52 -04:00

LibreChat

English · 中文

Deploy on Railway Deploy on Zeabur Deploy on Sealos

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🚀 What's New in v0.8.8-rc1

  • Agent run control: Interrupt or steer an Agent mid-run, queue follow-up messages, and reclaim, edit, or escalate pending steers.
  • Human-in-the-loop Agents: Agents stream question progress, ask up to four related questions in one form, pause for input or tool approval, and resume.
  • Unified Agent Builder: A redesigned Tools marketplace brings together Skills, MCP, Code Interpreter, orchestration, Programmatic Tool Calling, model-spec controls, and per-tool background and intent settings.
  • Readable Agent activity: Generated activity-group headers, parent phase summaries, and live tool intent labels make long reasoning and tool runs easier to scan.
  • Code Interpreter workflows: Code and shell tools can run in the background, sandbox images return as viewable artifacts, and highly experimental stateful sessions can reuse prewarmed conversation workspaces.
  • Agent extensibility: Experimental Agent Plugins can bundle deployment Skills, MCP servers, and opt-in command hooks, while explicit subagents initialize only when selected.
  • Memory, context, and identity: Agents can manage memory with optional per-agent isolation, expose support contacts safely, and show a more faithful Context Usage gauge.
  • Sharing and files: Shared conversations show a badge and update at a stable URL, while signed-in viewers can continue them as personal copies.
  • Artifact workflows: Open previews fullscreen, work with PowerPoint .potx templates across upload, search, and code execution, upload shell scripts across common MIME variants, export Mermaid diagrams as SVG or PNG, and download original Office files from the artifact panel.
  • Models and reasoning: Added GPT-5.6 with Responses API reasoning controls, Claude Opus 5 and Sonnet 5, Gemini 3.7 and 3.6 Flash, and Gemini 3.5 Flash-Lite.
  • Langfuse observability: Configure encrypted Langfuse connections in-app, let authorized admins open sampled sessions directly, optionally fan out traces by tenant, and suppress central export per run.
  • Administration and security: Delegate config sections, encrypt registered secrets, enforce SSRF checks for speech, OCR, and web tools, and generate unique temporary credentials when secrets are blank.
  • Messages and navigation: Right-aligned user turns, unified multi-part editing, full-message copy, a dock-style message rail, virtualized search, smooth streaming, and faster Agent startup.
  • Streaming and tool reliability: Adaptive provider smoothing, Redis delta batching, dynamic MCP tool refresh, parsed MCP response media types, runtime OAuth recovery, and Agent stream circuit breakers improve long-running workflows.
  • Deployment and reliability: Added configurable HTTP timeouts, Amazon DocumentDB 5.0+ support, low-noise Redis and browser observability, and a rolling-upgrade-safe generation protocol.

Read the full v0.8.8-rc1 changelog.

Features

  • 🖥️ UI & Experience inspired by ChatGPT with enhanced design and features

  • 🤖 AI Model Selection:

    • Anthropic (Claude), AWS Bedrock, OpenAI, Azure OpenAI, Google, Vertex AI, OpenAI Responses API (incl. Azure)
    • Custom Endpoints: Use any OpenAI-compatible API with LibreChat, no proxy required
    • Compatible with Local & Remote AI Providers:
      • Ollama, groq, Cohere, Mistral AI, Apple MLX, koboldcpp, together.ai,
      • OpenRouter, Helicone, Perplexity, ShuttleAI, Deepseek, Qwen, and more
  • 🔧 Code Interpreter API:

    • Secure, Sandboxed Execution in Python, Node.js (JS/TS), Go, C/C++, Java, PHP, Rust, and Fortran
    • Seamless File Handling: Upload, process, and download files directly
    • No Privacy Concerns: Fully isolated and secure execution
    • Open-Source & Self-Hostable: powered by ClickHouse/code-interpreter
  • 🔦 Agents & Tools Integration:

    • LibreChat Agents:
      • No-Code Custom Assistants: Build specialized, AI-driven helpers
      • Agent Marketplace: Discover and deploy community-built agents
      • Collaborative Sharing: Share agents with specific users and groups
      • Flexible & Extensible: Use MCP Servers, tools, file search, code execution, and more
      • Skills: Create reusable SKILL.md instruction bundles for manual, automatic, or always-on agent workflows
      • Agent Plugins: Experimentally bundle deployment Skills and MCP servers into startup-loaded packages
      • Subagents: Delegate focused work to isolated child agent runs with their own context windows
      • Compatible with Custom Endpoints, OpenAI, Azure, Anthropic, AWS Bedrock, Google, Vertex AI, Responses API, and more
      • Model Context Protocol (MCP) Support for Tools
  • 🔍 Web Search:

    • Search the internet and retrieve relevant information to enhance your AI context
    • Combines search providers, content scrapers, and result rerankers for optimal results
    • Customizable Jina Reranking: Configure custom Jina API URLs for reranking services
    • Learn More →
  • 🪄 Generative UI with Code Artifacts:

    • Code Artifacts create React, HTML, and Mermaid content directly in chat
    • Open previews fullscreen and export Mermaid diagrams as SVG or PNG
  • 🎨 Image Generation & Editing

  • 💾 Presets & Context Management:

    • Create, Save, & Share Custom Presets
    • Switch between AI Endpoints and Presets mid-chat
    • Edit, Resubmit, and Continue Messages with Conversation branching
    • Create and share prompts with specific users and groups
    • Fork Messages & Conversations for Advanced Context control
  • 💬 Multimodal & File Interactions:

    • Upload and analyze images with Claude 3, GPT-4.5, GPT-4o, o1, Llama-Vision, and Gemini 📸
    • Chat with Files using Custom Endpoints, OpenAI, Azure, Anthropic, AWS Bedrock, & Google 🗃️
  • 🌎 Multilingual UI:

    • English, 中文 (简体), 中文 (繁體), العربية, Deutsch, Español, Français, Italiano
    • Polski, Português (PT), Português (BR), Русский, 日本語, Svenska, 한국어, Tiếng Việt
    • Türkçe, Nederlands, עברית, Català, Čeština, Dansk, Eesti, فارسی
    • Suomi, Magyar, Հայերեն, Bahasa Indonesia, ქართული, Latviešu, ไทย, ئۇيغۇرچە
  • 🧠 Reasoning UI:

    • Dynamic Reasoning UI for Chain-of-Thought/Reasoning AI models like DeepSeek-R1
  • 🎨 Customizable Interface:

    • Customizable Dropdown & Interface that adapts to both power users and newcomers
  • 🌊 Resumable Streams:

    • Never lose a response: AI responses automatically reconnect and resume if your connection drops
    • Multi-Tab & Multi-Device Sync: Open the same chat in multiple tabs or pick up on another device
    • Production-Ready: Works from single-server setups to horizontally scaled deployments with Redis
  • 🗣️ Speech & Audio:

    • Chat hands-free with Speech-to-Text and Text-to-Speech
    • Automatically send and play Audio
    • Supports OpenAI, Azure OpenAI, and Elevenlabs
  • 📥 Import & Export Conversations:

    • Import Conversations from LibreChat, ChatGPT, Chatbot UI
    • Export conversations as screenshots, markdown, text, json
  • 🔍 Search & Discovery:

    • Search all messages/conversations
  • 👥 Multi-User & Secure Access:

    • Multi-User, Secure Authentication with OAuth2, LDAP, & Email Login Support
    • Built-in Moderation, and Token spend tools
  • 🎛️ Admin Panel:

    • Browser-based UI to manage users, groups, roles, and configuration overrides
    • Edit settings and per-role/group permissions live, without redeploying
    • Bundled with the Docker Compose stacks for one-command setup
  • ⚙️ Configuration & Deployment:

    • Configure Proxy, Reverse Proxy, Docker, & many Deployment options
    • Use S3 with CloudFront for stable media links, edge delivery, signed cookies, and secured downloads
    • Use completely local or deploy on the cloud
  • 📖 Open-Source & Community:

    • Completely Open-Source & Built in Public
    • Community-driven development, support, and feedback

For a thorough review of our features, see our docs here 📚

🪶 All-In-One AI Conversations with LibreChat

LibreChat is a self-hosted AI chat platform that unifies all major AI providers in a single, privacy-focused interface.

Beyond chat, LibreChat provides AI Agents, Model Context Protocol (MCP) support, Artifacts, Code Interpreter, custom actions, conversation search, and enterprise-ready multi-user authentication.

Open source, actively developed, and built for anyone who values control over their AI infrastructure.


🌐 Resources

GitHub Repo:

Other:


📝 Changelog

Keep up with the latest updates by visiting the releases page and notes:

⚠️ Please consult the changelog for breaking changes before updating.


Star History

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Contributions

Contributions, suggestions, bug reports and fixes are welcome!

For new features, components, or extensions, please open an issue and discuss before sending a PR.

If you'd like to help translate LibreChat into your language, we'd love your contribution! Improving our translations not only makes LibreChat more accessible to users around the world but also enhances the overall user experience. Please check out our Translation Guide.


💖 This project exists in its current state thanks to all the people who contribute


🎉 Special Thanks

We thank Locize for their translation management tools that support multiple languages in LibreChat.

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