Courtlistener MCP Server: Install & Setup

Install Courtlistener in Claude Code

Remote URL

Claude Code

claude mcp add --transport http courtlistener https://courtlistener.caseyjhand.com/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "courtlistener": {
      "url": "https://courtlistener.caseyjhand.com/mcp"
    }
  }
}

npm

Claude Code

claude mcp add courtlistener -e COURTLISTENER_API_TOKEN=... -- npx -y @cyanheads/courtlistener-mcp-server

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "courtlistener": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/courtlistener-mcp-server"
      ],
      "env": {
        "COURTLISTENER_API_TOKEN": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Courtlistener MCP server do?

Search US court opinions, federal dockets, judges, citations, and oral arguments via CourtListener.

Is the Courtlistener MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Courtlistener run locally or remotely?

Local + Remote. Can run locally or be used as a hosted remote server.

How do I add Courtlistener to Claude Code?

Run: claude mcp add --transport http courtlistener https://courtlistener.caseyjhand.com/mcp

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