Xenodocs Server

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Fetches up-to-date, version-specific documentation and code examples for any library, preventing outdated or hallucinated API usage in LLM responses.

by Xenodocs

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About

Fetches up-to-date, version-specific documentation and code examples for any library, preventing outdated or hallucinated API usage in LLM responses.

README

Website PyPI Version MIT licensed

❌ Without XenoDocs

LLMs rely on outdated or generic information about the libraries you use. You get:

❌ Code examples are outdated and based on year-old training data
❌ Hallucinated APIs that don't even exist
❌ Generic answers for old package versions

✅ With XenoDocs

XenoDocs MCP pulls up-to-date, version-specific documentation and code examples straight from the source — and places them directly into your prompt.

Tell your AI assistant to search for library documentation:

Search for "authentication middleware" in the FastAPI library documentation

Find examples of async functions in the httpx library

XenoDocs fetches up-to-date code examples and documentation right into your LLM's context.

1️⃣ Write your prompt naturally
2️⃣ Ask for specific library documentation
3️⃣ Get working code answers

No tab-switching, no hallucinated APIs that don't exist, no outdated code generation.

�️ Installation

Requirements

Python >= 3.10
VS Code, Cursor, Claude Desktop, or another MCP Client
XenoDocs API Key (Get yours by creating an account at xenodocs.com/account/api-keys

Method 1: Using uv (Recommended)

uv add xenodocs-mcp-server

Method 2: Using pip

pip install xenodocs-mcp-server

Install in VS Code

Add this to your VS Code MCP config file (.vscode/mcp.json). See VS Code MCP docs for more info.

VS Code Local Server Connection

{
  "servers": {
    "xenodocs-mcp-server": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "xenodocs-mcp-server"
      ],
      "env": {
        "XENODOCS_API_KEY": "YOUR_API_KEY"
      }
    }
  },
  "inputs": []
}

Alternative configurations:

Using uv project:

{
  "servers": {
    "xenodocs-mcp-server": {
      "type": "stdio",
      "command": "uv",
      "args": ["run", "xenodocs-mcp-server"],
      "env": {
        "XENODOCS_API_KEY": "YOUR_API_KEY"
      }
    }
  },
  "inputs": []
}

Using Python module:

{
  "servers": {
    "xenodocs-mcp-server": {
      "type": "stdio",
      "command": "python",
      "args": ["-m", "xenodocs_mcp_server.server"],
      "env": {
        "XENODOCS_API_KEY": "YOUR_API_KEY"
      }
    }
  },
  "inputs": []
}

Install in Cursor

Add to your Cursor MCP configuration (~/.cursor/mcp.json):

{
  "mcpServers": {
    "xenodocs": {
      "command": "uvx",
      "args": ["xenodocs-mcp-server"],
      "env": {
        "XENODOCS_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

Install in Claude Desktop

Add to your Claude Desktop configuration:

{
  "mcpServers": {
    "xenodocs": {
      "command": "uvx",
      "args": ["xenodocs-mcp-server"],
      "env": {
        "XENODOCS_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

Install in Windsurf

Add to your Windsurf MCP configuration:

{
  "mcpServers": {
    "xenodocs": {
      "command": "uvx",
      "args": ["xenodocs-mcp-server"],
      "env": {
        "XENODOCS_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

Install in Zed

Add to your Zed settings.json:

{
  "context_servers": {
    "xenodocs": {
      "source": "custom",
      "command": "uvx",
      "args": ["xenodocs-mcp-server"],
      "env": {
        "XENODOCS_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

🔨 Available Tools

XenoDocs MCP provides the following tools that LLMs can use:

search_library_name: Search for matching library names in the XenoDocs documentation database.
- library_name (required): The name or partial name of the library to search for
- top_k (optional): Maximum number of matching libraries to return (default: 3, max: 20)
search_library: Search for specific information within a library's documentation.
- library_name (required): The exact name of the library to search in
- query (required): The search query describing what you're looking for

💻 Development

Clone the project and install dependencies:

git clone https://github.com/Xenodocs/xenodocs-mcp-server.git
cd xenodocs-mcp-server
uv sync

Set your API key:

export XENODOCS_API_KEY="your-api-key"

Run the server:

uv run xenodocs-mcp-server

Testing with MCP Inspector

npx @modelcontextprotocol/inspector uv run xenodocs-mcp-server

🚨 Troubleshooting

Command Not Found Errors

If you get "command not found" errors:

For uv projects: Make sure you're in a directory with a pyproject.toml file

For pip installation: Use the Python module method:

{
  "command": "python",
  "args": ["-m", "xenodocs_mcp_server.server"]
}

API Key Not Found Error

If you see WARNING: XENODOCS_API_KEY not set!, make sure you've configured the API key in your MCP client configuration or as a system environment variable.

General MCP Client Errors

Restart your MCP client completely
Check that your installation method is working by running the command manually
Check client output/logs for MCP connection errors
Verify you have the correct Python version (>=3.10)

from github.com/Xenodocs/xenodocs-mcp-server

Install Xenodocs Server in Claude Desktop, Claude Code & Cursor

Recommended · one command, every IDE

unyly install xenodocs-mcp-server

Installs into Claude Desktop, Claude Code, Cursor & VS Code — handles npx, uvx and build-from-source repos for you.

First time? Get the CLI: curl -fsSL https://unyly.org/install | sh

Or configure manually

Run in your terminal:

claude mcp add xenodocs-mcp-server -- uvx xenodocs-mcp-server

FAQ

Is Xenodocs Server MCP free?

Yes, Xenodocs Server MCP is free — one-click install via Unyly at no cost.

Does Xenodocs Server need an API key?

No, Xenodocs Server runs without API keys or environment variables.

Is Xenodocs Server hosted or self-hosted?

A hosted option is available: Unyly runs the server in the cloud, no local setup required.

How do I install Xenodocs Server in Claude Desktop, Claude Code or Cursor?

Open Xenodocs Server on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.

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