Court Listener

live Data

CourtListener MCP — Free Law Project's CourtListener API (free, no auth required for basic access)

3 tools
0ms auth
free tier 50 calls/day

Tools

search_opinions

Search US court opinions by keyword (e.g., "qualified immunity", "Fourth Amendment"). Returns case name, court, date, docket number, and text snippet. Covers federal and state courts.

No parameters required.

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search_dockets

Search US court dockets by keyword. Returns case name, court, filing date, docket number, nature of suit, and assigned judge. Covers PACER and RECAP archives.

No parameters required.

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get_opinion

Get a specific court opinion by its CourtListener ID. Returns the full opinion text, author, date, and download link.

No parameters required.

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Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash 
curl -X POST https://gateway.pipeworx.io/court-listener/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash 
curl -X POST https://gateway.pipeworx.io/court-listener/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"search_opinions","arguments":{}}}'