`lookup_citation`

Pack: court-listener · Endpoint: https://gateway.pipeworx.io/court-listener/mcp

Resolve a US reporter citation such as “410 U.S. 113” or “347 U.S. 483” to the case it refers to, with name, filing date, judges and citation count. No API key, no rate limit. Use when a brief, opinion or article cites a case by reporter and you need to know which case that is.

Parameters

Name	Type	Required	Description
`citation`	string	yes	Reporter citation: volume, reporter, page. E.g. “410 U.S. 113”.

Example call

Arguments

{
  "citation": "410 U.S. 113"
}

curl

curl -X POST https://gateway.pipeworx.io/court-listener/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"lookup_citation","arguments":{"citation":"410 U.S. 113"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('lookup_citation', {
  "citation": "410 U.S. 113"
});

Connect

Add this to your MCP client config, or use one-click install buttons:

{
  "mcpServers": {
    "court-listener": {
      "url": "https://gateway.pipeworx.io/court-listener/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

lookup_citation