CourtListener

Last 30 days

Uptime

100%

Response time

274 ms typical, 274 ms slowest 5%

Last check

6 h ago

Next check

any minute now

How to call it

Add it to any MCP client that supports remote servers.

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

34 tools

• 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") - S

• 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 re

• 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 includin

• 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.

Security scan

• No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks