22 tools that work with LangChain: 10 MCP servers, 12 Agent Skills and 0 Claude Code plugins. 7 of the remote servers answered our live check, 1 worked without an API key, and 8 come from an official or verified publisher. Ranked by GitHub stars plus official, live and free-to-try signals.
Most common uses: Multi-agent, orchestration & workflows (16), Code search, analysis, refactoring & languages (4), Models, LLM APIs, routing, serving, training & GPUs (1), Library & API documentation lookup (1).
| Tool | Stars | Last update | License | |
|---|---|---|---|---|
| langchain-architecture Design LLM applications using LangChain 1.x and LangGraph for agents, memory, and tool integration. Use when building LangChain applications, implemen SkillInstall · skills CLI | 42,495 | MIT | ||
| ecosystem-primer INVOKE FIRST for any LangChain / LangGraph / Deep Agents agent building project before consulting other skills or writing any agent code. Required sta SkillInstall · skills CLI | 1,340 | MIT | ||
| eval-engineering Inspect an agent repository and optional traces, interview the user, write reviewed Task Specs, build and audit Harbor tasks, and bootstrap reusable p SkillInstall · skills CLI | 1,340 | MIT | ||
| langchain-dependencies INVOKE THIS SKILL when setting up a new project or when asked about package versions, installation, or dependency management for LangChain, LangGraph, SkillInstall · skills CLI | 1,340 | MIT | ||
| langchain-fundamentals Create LangChain agents with create_agent, define tools, and use middleware for human-in-the-loop and error handling. SkillInstall · skills CLI | 1,340 | MIT | ||
| langchain-middleware INVOKE THIS SKILL when you need human-in-the-loop approval, custom middleware, or structured output. Covers HumanInTheLoopMiddleware for human approva SkillInstall · skills CLI | 1,340 | MIT | ||
| langchain-python-quickstart Scaffold a minimal local LangChain agent in Python by following the official quickstart. Use when the user wants to quickly build or try a LangChain a SkillInstall · skills CLI | 1,340 | MIT | ||
| langchain-typescript-quickstart Scaffold a minimal local LangChain agent in TypeScript by following the official quickstart. Use when the user wants to quickly build or try a LangCha SkillInstall · skills CLI | 1,340 | MIT | ||
| swarm Dispatches many independent items in parallel: create a table, fan out to subagents, aggregate results. One row = one unit of work. SkillInstall · skills CLI | 1,340 | MIT | ||
| Mode VC Chart: LangChain Alternatives: Downloads vs. Newer AI SDKs LangChain's share of weekly npm framework downloads fell from 32% to 19% in 46 weeks, while. MCP serverVerified domain · modevc.comRemote● LiveFree to try | — | — | ||
| ai.getvda/encrypted-langchain-token-agent Encrypted LangChain Token Agent MCP serverVerified domain · getvda.aiRemote● Live | — | — | ||
| ai.getvda/google-oauth-langchain-agent Google OAuth LangChain Agent MCP serverVerified domain · getvda.aiRemote● Live | — | — | ||
| ai.getvda/google-sign-in-langchain-agent Google Sign-In LangChain Agent MCP serverVerified domain · getvda.aiRemote● Live | — | — | ||
| ai.getvda/langchain-login-and-token-agent LangChain Login and Token Agent MCP serverVerified domain · getvda.aiRemote● Live | — | — | ||
| ai.getvda/llm-observability-orchestration-agent-langchain LLM Observability & Orchestration Agent (Langchain) MCP serverVerified domain · getvda.aiRemote● Live | — | — | ||
| ai.getvda/llm-orchestration-agent-langchain LLM Orchestration Agent (Langchain) MCP serverVerified domain · getvda.aiRemote● Live | — | — | ||
| framework-selection INVOKE THIS SKILL at the START of any LangChain/LangGraph/Deep Agents project, before writing any agent code. Determines which framework layer is righ SkillInstall · skills CLI | 120 | MIT | ||
| langchain-dependencies INVOKE THIS SKILL when asked about and/or have to implement package versions, installation, or dependency management for LangChain, LangGraph, LangSmi SkillInstall · skills CLI | 120 | MIT | ||
| langchain-oss-primer ALWAYS START HERE for any LangChain, Deep Agents, or LangGraph agent building project. Required starting point before choosing other skills or writing SkillInstall · skills CLI | 120 | MIT | ||
| ai.getvda/encrypted-langchain-session-agent Encrypted LangChain Session Agent MCP serverVerified domain · getvda.aiRemoteDown | — | — | ||
| langchain MCP server for langchain documentation, generated by doc2mcp. MCP serverGitHub-verified authorRemoteDown | 6 | MIT | ||
| io.github.baixianger/langchain-mcp LangChain/LangGraph/DeepAgents knowledge + LangGraph agent debugging (Polly-like) MCP serverGitHub-verified authorLocal · npm | 5 | — |