Model Context Protocol (MCP) To LangChain Tools Conversion Utility
Model Context Protocol (MCP) To LangChain Tools Conversion Utility. That is what the langchain mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.
A simple, lightweight library to use Model Context Protocol (MCP) server tools from LangChain.
This package is intended to simplify the use of Model Context Protocol (MCP) server tools with LangChain / Python.
Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.
The server publishes 3 tools. What each one is for:
Limitations — The Limitations tool exposed by this serverNote — The Note tool exposed by this serverTroubleshooting — 1. Enable debug logging: Set the log level to DEBUG to see detailed connection and execution logs:Configuration is passed through the environment: BRAVE_API_KEY, GITHUB_PERSONAL_ACCESS_TOKEN. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
uv (uvx) installed to run Python package-based local MCP servers - [optional] npm 7+ (npx) to run Node.js package-based local MCP serversPlenty of planning and project tracking servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Langchain's toolset — Limitations, Note, Troubleshooting — is a fair guide to whether it matches your workflow.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| Limitations | The Limitations tool exposed by this server. |
| Note | The Note tool exposed by this server. |
| Troubleshooting | 1. **Enable debug logging**: Set the log level to DEBUG to see detailed connection and execution logs: |
{
"mcpServers": {
"langchain-mcp-tools": {
"command": "uvx",
"args": ["langchain-mcp-tools"],
"env": {
"BRAVE_API_KEY": "your-value",
"GITHUB_PERSONAL_ACCESS_TOKEN": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
uv (uvx) installed to run Python package-based local MCP servers - [optional] npm 7+ (npx) to run Node.js package-based local MCP servers| Variable | Description | Required |
|---|---|---|
| BRAVE_API_KEY | Credential the server authenticates with. | Yes |
| GITHUB_PERSONAL_ACCESS_TOKEN | Credential the server authenticates with. | Yes |
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