CourtListener

io.github.Vaquill-AI/courtlistener-mcpVersion 0.1.0

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

Status

Responds316 msNov 14, 2026, 14:43 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:43 UTC
Latency: 316 ms
Remotes responding: 1 of 1
Sign-in: API key
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

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Connect

Streamable HTTP

https://courtlistener-mcp.vaquill.ai/mcp/Responds316 msNov 14, 2026, 14:43 UTC

No sign-in

Claude Code

claude mcp add --transport http courtlistener-mcp https://courtlistener-mcp.vaquill.ai/mcp/ --header 'X-CourtListener-Token: <YOUR_X_COURTLISTENER_TOKEN>'

Replace <YOUR_X_COURTLISTENER_TOKEN> before running.

Claude Desktop and claude.ai

Settings > Connectors > Add custom connector
Name: courtlistener-mcp
Remote MCP server URL: https://courtlistener-mcp.vaquill.ai/mcp/
This server expects the header X-CourtListener-Token.

Cursor

{
  "mcpServers": {
    "courtlistener-mcp": {
      "url": "https://courtlistener-mcp.vaquill.ai/mcp/",
      "headers": {
        "X-CourtListener-Token": "<YOUR_X_COURTLISTENER_TOKEN>"
      }
    }
  }
}

Replace <YOUR_X_COURTLISTENER_TOKEN> before running.

VS Code

code --add-mcp '{"name":"courtlistener-mcp","type":"http","url":"https://courtlistener-mcp.vaquill.ai/mcp/","headers":{"X-CourtListener-Token":"<YOUR_X_COURTLISTENER_TOKEN>"}}'

Replace <YOUR_X_COURTLISTENER_TOKEN> before running.

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Tools

34 tools

Tools of CourtListener
	Description		Read-only	Idempotent	Open world
`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.	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.	Not declared	Yes	Not declared	Yes
`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.	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.	Not declared	Yes	Not declared	Yes
`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).	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).	Not declared	Yes	Not declared	No
`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 citations	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 citations	Not declared	Yes	Not declared	Yes
`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 citation format and source - Extracted tokens (volume, reporter, page, etc.) - Generated URL if available - Normalized citation text	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 citation format and source - Extracted tokens (volume, reporter, page, etc.) - Generated URL if available - Normalized citation text	Not declared	Yes	Not declared	No
`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. Returns information about the citation format and any detected issues.	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. Returns information about the citation format and any detected issues.	Not declared	Yes	Not declared	No
`ecfr_get_ancestry`Get the ancestry chain (title -> ... -> node) for a CFR node on a date.	Get the ancestry chain (title -> ... -> node) for a CFR node on a date.	Not declared	Yes	Not declared	Yes
`ecfr_get_daily_search_counts`Get search result counts broken down by date (daily histogram).	Get search result counts broken down by date (daily histogram).	Not declared	Yes	Not declared	Yes
`ecfr_get_hierarchy_search_counts`Get search result counts distributed across the CFR hierarchy.	Get search result counts distributed across the CFR hierarchy.	Not declared	Yes	Not declared	Yes
`ecfr_get_search_count`Get the total number of CFR sections matching a search query.	Get the total number of CFR sections matching a search query.	Not declared	Yes	Not declared	Yes
`ecfr_get_search_suggestions`Get search-term suggestions for a partial CFR query.	Get search-term suggestions for a partial CFR query.	Not declared	Yes	Not declared	Yes
`ecfr_get_search_summary`Get summary details (counts + metadata) for a CFR search query.	Get summary details (counts + metadata) for a CFR search query.	Not declared	Yes	Not declared	Yes
`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``.	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``.	Not declared	Yes	Not declared	Yes
`ecfr_get_title_search_counts`Get search result counts broken down by CFR title.	Get search result counts broken down by CFR title.	Not declared	Yes	Not declared	Yes
`ecfr_get_title_structure`Get the full hierarchical structure (title -> section) of a CFR title on a date.	Get the full hierarchical structure (title -> section) of a CFR title on a date.	Not declared	Yes	Not declared	Yes
`ecfr_get_title_versions`List the available content versions (issue dates) for one CFR title.	List the available content versions (issue dates) for one CFR title.	Not declared	Yes	Not declared	Yes
`ecfr_list_agencies`List all agencies that appear in the CFR, with their title/chapter references.	List all agencies that appear in the CFR, with their title/chapter references.	Not declared	Yes	Not declared	Yes
`ecfr_list_all_corrections`List CFR corrections, optionally filtered by title and/or effective date.	List CFR corrections, optionally filtered by title and/or effective date.	Not declared	Yes	Not declared	Yes
`ecfr_list_corrections_by_title`List all corrections for a single CFR title.	List all corrections for a single CFR title.	Not declared	Yes	Not declared	Yes
`ecfr_list_titles`List all 50 CFR titles with their latest amended/issue dates and status.	List all 50 CFR titles with their latest amended/issue dates and status.	Not declared	Yes	Not declared	Yes
`ecfr_search_regulations`Full-text search over federal regulations, returning matching sections with hierarchy.	Full-text search over federal regulations, returning matching sections with hierarchy.	Not declared	Yes	Not declared	Yes
`get_audio`Get oral argument audio information by ID from CourtListener.	Get oral argument audio information by ID from CourtListener.	Not declared	Yes	Not declared	Yes
`get_cluster`Get an opinion cluster by ID from CourtListener.	Get an opinion cluster by ID from CourtListener.	Not declared	Yes	Not declared	Yes
`get_court`Get court information by ID from CourtListener.	Get court information by ID from CourtListener.	Not declared	Yes	Not declared	Yes
`get_docket`Get a specific court docket by ID from CourtListener.	Get a specific court docket by ID from CourtListener.	Not declared	Yes	Not declared	Yes
`get_opinion`Get a specific court opinion by ID from CourtListener.	Get a specific court opinion by ID from CourtListener.	Not declared	Yes	Not declared	Yes
`get_person`Get judge or legal professional information by ID from CourtListener.	Get judge or legal professional information by ID from CourtListener.	Not declared	Yes	Not declared	Yes
`search_audio`Search oral argument audio recordings in CourtListener.	Search oral argument audio recordings in CourtListener.	Not declared	Yes	Not declared	Yes
`search_dockets`Search federal cases (dockets) from PACER in CourtListener.	Search federal cases (dockets) from PACER in CourtListener.	Not declared	Yes	Not declared	Yes
`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 federal cases (dockets) with up to three nested documents. If there are more than three matching documents, the more_docs field will be true.	Not declared	Yes	Not declared	Yes
`search_opinions`Search case law opinion clusters with nested Opinion documents in CourtListener.	Search case law opinion clusters with nested Opinion documents in CourtListener.	Not declared	Yes	Not declared	Yes
`search_people`Search judges and legal professionals in the CourtListener database.	Search judges and legal professionals in the CourtListener database.	Not declared	Yes	Not declared	Yes
`search_recap_documents`Search federal filing documents from PACER in the RECAP archive.	Search federal filing documents from PACER in the RECAP archive.	Not declared	Yes	Not declared	Yes
`status`Check the status of the CourtListener MCP server. Returns: A dictionary containing server status, system metrics, and service information.	Check the status of the CourtListener MCP server. Returns: A dictionary containing server status, system metrics, and service information.	Not declared	Not declared	Not declared	Not declared

Details

Registry status: Active
Published: May 15, 2026
Updated: May 15, 2026
Website: Not given
Repository: https://github.com/Vaquill-AI/courtlistener-mcp⁠ (opens in a new tab)
Categories (suggested): DocumentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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