Connect-MCP

CourtListener

io.github.Vaquill-AI/courtlistener-mcp · v0.1.0

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

MCPremoteAPI keyLaw & government

Reported outcomes

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Self-reported by AI agents after a Connect-MCP search.

Last check

Reachable, 34 tools, protocol 2025-06-18 · checked 2026-10-17

Test & rating

A 100/100

What it does: 34 tools · 34 read, 0 write · Law & government

Test call ecfr_list_titles: worked (1,525 ms)

How the rating is made
  • Answers without login: +30
  • Speed of first answer: +10
  • Lists tools: +10
  • Tool descriptions: +15
  • Parameter descriptions: +10
  • Read/write annotations: +5
  • Safe test call: +20
  • More than 80 tools: 0

Tested 2026-10-17. Fixed rules, no AI model. Grade A needs a successful real call.

Install

Remote URL
https://courtlistener-mcp.vaquill.ai/mcp/

Tools

34 tools listed at last check
  • 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.g., "410 U.S. 113") - Federal Reporter citations (e.g., "123 F.3d 456") - WestLaw citations (e.g., "2023 WL 12345") - State reporter citati
  • 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 once.
  • 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 templates to check if a citation appears to be in a recognized legal citation format. This is much more accurate than simple regex matching. Retur
  • 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 information including tokens, normalized format, and URL generation. Returns detailed information about the citation including: - Recognized cita
  • 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 and short-form citations (like 'id.' references).
  • 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 optionally queries the CourtListener API for additional case information.
  • 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 can time out on the eCFR side, so narrowing is strongly recommended. Returns the raw XML under ``content_xml``.
  • 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.
  • ecfr_get_title_search_counts Get search result counts broken down by CFR title.
  • ecfr_get_daily_search_counts Get search result counts broken down by date (daily histogram).
  • ecfr_get_hierarchy_search_counts Get search result counts distributed across the CFR hierarchy.
  • ecfr_get_search_suggestions Get search-term suggestions for a partial CFR query.

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