io.github.baixianger/langchain-mcp
langchain-mcp
Is the io.github.baixianger/langchain-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.
LangChain/LangGraph/DeepAgents knowledge + LangGraph agent debugging (Polly-like)
alive probed 2026-11-15 · unchanged since 2026-10-31
- Run it
- npx -y langchain-mcp@2.0.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- langchain-mcp 1.2.7
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.2 % of a 1M context window
- Count
- 2.3k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 2.5k. The o200k_base estimate is 1.3k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/baixianger/langchain-MCP
- Registry
- active, updated 2026-01-08 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.81×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| langgraph_list_threads | 341 | 188 | 15 % |
| langgraph_analyze_trace | 310 | 171 | 13 % |
| langgraph_list_runs | 259 | 143 | 11 % |
| langgraph_get_run | 223 | 123 | 10 % |
| search_deepagents_code | 212 | 117 | 9 % |
Compare this server with others.
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Servers that mention langchain.
- ai.getvda/encrypted-langchain-session-agent · newer protocol
- ai.getvda/encrypted-langchain-token-agent · newer protocol
- ai.getvda/google-oauth-langchain-agent · newer protocol
- ai.getvda/google-sign-in-langchain-agent · newer protocol
- ai.getvda/langchain-login-and-token-agent · newer protocol
- ai.getvda/llm-observability-orchestration-agent-langchain · newer protocol
- ai.getvda/llm-observability-orchestration-agent-langchain-community · newer protocol
- ai.getvda/llm-orchestration-agent-langchain · newer protocol
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.