`search_case_law`

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

Search the FULL TEXT of US court opinions by subject matter — “qualified immunity for police dogs”, “securities fraud scienter pleading standard”. Searches our hosted index of CourtListener opinions with no API key and no rate limit, and returns the most relevant opinion ids with a relevance score; call get_opinion to read one. Use this when you know the TOPIC. To find a case by NAME use find_case; by reporter citation use lookup_citation. Phrase queries need quotes.

Parameters

Name	Type	Required	Description
`query`	string	yes	Subject matter to search for. Quote phrases: “clear and present danger”.
`limit`	number	no	Maximum opinions to return (1-50, default 10).

Example call

Arguments

{
  "query": "qualified immunity",
  "limit": 5
}

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":"search_case_law","arguments":{"query":"qualified immunity","limit":5}}}'

TypeScript (@pipeworx/sdk)

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

const result = await pipeworx.call('search_case_law', {
  "query": "qualified immunity",
  "limit": 5
});

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.

search_case_law