CourtListener
MCP for CourtListener: US federal and state opinions, dockets, judges, plus eCFR regulations.
Connect it
Settings → Connectors → Add custom connector
URL: https://courtlistener-mcp.vaquill.ai/mcp/Settings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://courtlistener-mcp.vaquill.ai/mcp/{
"mcpServers": {
"courtlistener-mcp": {
"url": "https://courtlistener-mcp.vaquill.ai/mcp/",
"headers": {
"X-CourtListener-Token": "<YOUR_X_COURTLISTENER_TOKEN>"
}
}
}
}claude mcp add --transport http courtlistener-mcp https://courtlistener-mcp.vaquill.ai/mcp/ --header "X-CourtListener-Token: <value>"{
"servers": {
"courtlistener-mcp": {
"type": "http",
"url": "https://courtlistener-mcp.vaquill.ai/mcp/",
"headers": {
"X-CourtListener-Token": "<YOUR_X_COURTLISTENER_TOKEN>"
}
}
}
}34 tools, verified live
statusCheck the status of the CourtListener MCP server. Returns: A dictionary containing server status, system metrics, and service information.
search_opinionsread-onlySearch case law opinion clusters with nested Opinion documents in CourtListener.
search_docketsread-onlySearch federal cases (dockets) from PACER in CourtListener.
search_dockets_with_documentsread-onlySearch 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_documentsread-onlySearch federal filing documents from PACER in the RECAP archive.
search_audioread-onlySearch oral argument audio recordings in CourtListener.
search_peopleread-onlySearch judges and legal professionals in the CourtListener database.
get_opinionread-onlyGet a specific court opinion by ID from CourtListener.
get_docketread-onlyGet a specific court docket by ID from CourtListener.
get_audioread-onlyGet oral argument audio information by ID from CourtListener.
get_clusterread-onlyGet an opinion cluster by ID from CourtListener.
get_personread-onlyGet judge or legal professional information by ID from CourtListener.
get_courtread-onlyGet court information by ID from CourtListener.
citation_lookup_citationread-onlyLook 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 citations
citation_batch_lookup_citationsread-onlyLook 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_formatread-onlyVerify 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. Returns information about the citation format and any detected issues.
citation_parse_citation_with_citeurlread-onlyParse 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 citation format and source - Extracted tokens (volume, reporter, page, etc.) - Generated URL if availabl
citation_extract_citations_from_textread-onlyExtract 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_lookupread-onlyEnhanced 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_titlesread-onlyList all 50 CFR titles with their latest amended/issue dates and status.
ecfr_get_title_versionsread-onlyList the available content versions (issue dates) for one CFR title.
ecfr_get_title_structureread-onlyGet the full hierarchical structure (title -> section) of a CFR title on a date.
ecfr_get_ancestryread-onlyGet the ancestry chain (title -> ... -> node) for a CFR node on a date.
ecfr_get_source_xmlread-onlyFetch 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_agenciesread-onlyList all agencies that appear in the CFR, with their title/chapter references.
ecfr_list_all_correctionsread-onlyList CFR corrections, optionally filtered by title and/or effective date.
ecfr_list_corrections_by_titleread-onlyList all corrections for a single CFR title.
ecfr_search_regulationsread-onlyFull-text search over federal regulations, returning matching sections with hierarchy.
ecfr_get_search_countread-onlyGet the total number of CFR sections matching a search query.
ecfr_get_search_summaryread-onlyGet summary details (counts + metadata) for a CFR search query.
ecfr_get_title_search_countsread-onlyGet search result counts broken down by CFR title.
ecfr_get_daily_search_countsread-onlyGet search result counts broken down by date (daily histogram).
ecfr_get_hierarchy_search_countsread-onlyGet search result counts distributed across the CFR hierarchy.
ecfr_get_search_suggestionsread-onlyGet search-term suggestions for a partial CFR query.
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