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Claude Desktop

LexAPI for Claude Desktop

io.github.lex-api/lexapi-mcp

Search EUR-Lex, fetch parsed EU legislation and case law, explore the citation graph.

client:Claude Desktop transport:stdio runtime:npm

Install LexAPI in Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "lexapi-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@lexapi/mcp"
      ],
      "env": {
        "LEXAPI_API_KEY": "<LEXAPI_API_KEY>",
        "LEXAPI_BASE_URL": "<LEXAPI_BASE_URL>"
      }
    }
  }
}

Settings → Developer → Edit Config opens this file. Restart the app after saving. Claude Desktop docs

LexAPI in other clients

LexAPI MCP server