io.github.Vaquill-AI/courtlistener-mcp

up checked 2026-11-11T08:38:01.659Z

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Publisher-provided title

CourtListener

Publisher-provided description

MCP for CourtListener: US federal and state opinions, dockets, judges, plus eCFR regulations.

Summary by lookupd

Search and retrieve US court opinions, dockets, judges, and PACER filings, look up and verify legal citations, and query federal…

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http courtlistener https://courtlistener-mcp.vaquill.ai/mcp/

Codex, remote (streamable-http)

codex mcp add courtlistener --url https://courtlistener-mcp.vaquill.ai/mcp/

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "courtlistener": {
      "url": "https://courtlistener-mcp.vaquill.ai/mcp/"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (showing 30 of 34)

Publisher-provided text

• status Check the status of the CourtListener MCP server. Returns: A dictionary containing server status, system metrics, and service information.
• search_opinions Search case law opinion clusters with nested Opinion documents in CourtListener.
• search_dockets Search federal cases (dockets) from PACER in CourtListener.
• search_dockets_with_documents Search federal cases (dockets) with up to three nested documents. If there are more than three matching documents, the more_docs field will be true.
• search_recap_documents Search federal filing documents from PACER in the RECAP archive.
• search_audio Search oral argument audio recordings in CourtListener.
• search_people Search judges and legal professionals in the CourtListener database.
• get_opinion Get a specific court opinion by ID from CourtListener.
• get_docket Get a specific court docket by ID from CourtListener.
• get_audio Get oral argument audio information by ID from CourtListener.
• get_cluster Get an opinion cluster by ID from CourtListener.
• get_person Get judge or legal professional information by ID from CourtListener.
• get_court Get court information by ID from CourtListener.
• citation_lookup_citation Look up a legal citation to find the opinion it references in CourtListener. This tool accepts various citation formats including: - U.S. Reporter citations (e
• citation_batch_lookup_citations Look up multiple legal citations in a single request. This is more efficient than making individual requests for each citation. Accepts up to 100 citations at
• citation_verify_citation_format Verify if a citation string is in a valid format using citeurl's advanced parsing. This tool performs validation using citeurl's comprehensive citation templat
• citation_parse_citation_with_citeurl Parse a legal citation using citeurl's advanced citation recognition. This tool uses the citeurl library to parse legal citations and extract structured inform
• citation_extract_citations_from_text Extract all legal citations from a block of text using citeurl. This tool finds and parses all legal citations within a given text, including both long-form an
• citation_enhanced_citation_lookup Enhanced citation lookup combining citeurl parsing with CourtListener data. This tool first uses citeurl to parse and validate the citation format, then option
• ecfr_list_titles List all 50 CFR titles with their latest amended/issue dates and status.
• ecfr_get_title_versions List the available content versions (issue dates) for one CFR title.
• ecfr_get_title_structure Get the full hierarchical structure (title -> section) of a CFR title on a date.
• ecfr_get_ancestry Get the ancestry chain (title -> ... -> node) for a CFR node on a date.
• ecfr_get_source_xml Fetch the source regulation TEXT (XML) for a CFR node on a snapshot date. Pass a part or section to scope the request. Fetching an entire large title at once c
• ecfr_list_agencies List all agencies that appear in the CFR, with their title/chapter references.
• ecfr_list_all_corrections List CFR corrections, optionally filtered by title and/or effective date.
• ecfr_list_corrections_by_title List all corrections for a single CFR title.
• ecfr_search_regulations Full-text search over federal regulations, returning matching sections with hierarchy.
• ecfr_get_search_count Get the total number of CFR sections matching a search query.
• ecfr_get_search_summary Get summary details (counts + metadata) for a CFR search query.

Details

• Version: 0.1.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 1092 ms
• First indexed: 2026-11-01T09:17:49.468Z
• Last seen in registry: 2026-11-01T09:17:49.468Z
• Repository: https://github.com/Vaquill-AI/courtlistener-mcp

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