`lookup_citation`

Pack: court-listener · Connect: https://pipeworx.io/mcp (see Connect below for a single-pack URL)

No MCP client? Call it directly: GET https://gateway.pipeworx.io/v1/tools/lookup_citation for the schema, then POST the same URL with its arguments for the data.

The case a US reporter citation (e.g. “410 U.S. 113”) refers to, from CourtListener.

Tool description as the model sees it

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 — every tool in the catalog, including this one — or use one-click install buttons:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://pipeworx.io/mcp"
    }
  }
}

Connect to just the court-listener pack

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

See Getting Started for client-specific install steps.

lookup_citation