MCP server exposing 6 tools for court-listener.
This URL is a JSON-RPC 2.0 endpoint over HTTP. Issue POST requests with a JSON-RPC body. Browsers and search crawlers land here on GET.
POST https://gateway.pipeworx.io/court-listener/mcp
Content-Type: application/json
{"jsonrpc":"2.0","id":1,"method":"tools/list"}search_opinions — Search US court opinions by keyword (e.g., "qualified immunity", "Fourth Amendment"). Covers federal and state courts. Each result carries the case name, court, filing date, docket number, official citation, how many later cases cite it (cite_count — a rough importance signal), the authoring judge, and a matching snippet. Pass a result's opinion_id to get_opinion for the full text.search_dockets — Search US court dockets by keyword. Covers PACER and RECAP archives. Each result carries docket_id, case name, court, filing and termination dates, docket number, nature of suit, the cause of action, the assigned judge, and the PACER case id.find_case — Find a US court case BY NAME and get its citations, filing date, judges and how often it has been cited. Searches 8.3 million opinions across 3,361 courts — no API key, no rate limit. Ranked by citation count, so the leading case for a name comes first. Use this when you know what the case is CALLED; use search_opinions when you only know the TOPIC.lookup_citation — 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.list_case_opinions — List every opinion filed in one case (cluster) — majority, concurrences and dissents — with the opinion_id needed to read each one via get_opinion. No API key, no rate limit. Use after find_case or lookup_citation to get from a case to its readable text.get_opinion — Get the FULL TEXT of a US court opinion by its CourtListener opinion ID (the opinion_id returned by search_opinions). Covers 8.3 million opinions, 71% state case law — no API key needed. Returns the opinion text, the case name, the real filing date, author, citation count, whether the text came from OCR of a scan, and the data as-of date. Opinions filed after that date may fall through to live search.Code samples (curl / TypeScript / one-click client install), schemas, and the live playground are on the pack page:
https://pipeworx.io/packs/court-listener/
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