CourtListener

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

Connector by Vaquill-AI · GitHub account verified by the MCP Registry

IndexedMITRemote (HTTP)★ 4

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Install

Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/vaquill-ai-courtlistener-mcp

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

https://courtlistener-mcp.vaquill.ai/mcp/ Remote (HTTP)

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About

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

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools: 34 read · 0 write · 0 deleteRead-only
Secrets: 1 (API keys, tokens or passwords)
Install scripts: Nothing to install (hosted)
Runs as: Hosted (remote endpoint)

Tools by what they do 34

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 34 · Look things up without changing anything.

citation_batch_lookup_citations
citation_enhanced_citation_lookup
citation_extract_citations_from_text
citation_lookup_citation
citation_parse_citation_with_citeurl
citation_verify_citation_format
ecfr_get_ancestry
ecfr_get_daily_search_counts
ecfr_get_hierarchy_search_counts
ecfr_get_search_count
ecfr_get_search_suggestions
ecfr_get_search_summary

Show 22 more tools

ecfr_get_source_xml
ecfr_get_title_search_counts
ecfr_get_title_structure
ecfr_get_title_versions
ecfr_list_agencies
ecfr_list_all_corrections
ecfr_list_corrections_by_title
ecfr_list_titles
ecfr_search_regulations
get_audio
get_cluster
get_court
get_docket
get_opinion
get_person
search_audio
search_dockets
search_dockets_with_documents
search_opinions
search_people
search_recap_documents
status

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

X-CourtListener-Token

Network hosts it talks to 1

courtlistener-mcp.vaquill.ai · found in remote endpoint, install command

Tools (34)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

citation_batch_lookup_citationsread-only
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_enhanced_citation_lookupread-only
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.
citation_extract_citations_from_textread-only
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_lookup_citationread-only
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
citation_parse_citation_with_citeurlread-only
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
citation_verify_citation_formatread-only
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.
ecfr_get_ancestryread-only
Get the ancestry chain (title -> ... -> node) for a CFR node on a date.
ecfr_get_daily_search_countsread-only
Get search result counts broken down by date (daily histogram).
ecfr_get_hierarchy_search_countsread-only
Get search result counts distributed across the CFR hierarchy.
ecfr_get_search_countread-only
Get the total number of CFR sections matching a search query.
ecfr_get_search_suggestionsread-only
Get search-term suggestions for a partial CFR query.
ecfr_get_search_summaryread-only
Get summary details (counts + metadata) for a CFR search query.
ecfr_get_source_xmlread-only
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_get_title_search_countsread-only
Get search result counts broken down by CFR title.
ecfr_get_title_structureread-only
Get the full hierarchical structure (title -> section) of a CFR title on a date.

Show 19 more tools

ecfr_get_title_versionsread-only
List the available content versions (issue dates) for one CFR title.
ecfr_list_agenciesread-only
List all agencies that appear in the CFR, with their title/chapter references.
ecfr_list_all_correctionsread-only
List CFR corrections, optionally filtered by title and/or effective date.
ecfr_list_corrections_by_titleread-only
List all corrections for a single CFR title.
ecfr_list_titlesread-only
List all 50 CFR titles with their latest amended/issue dates and status.
ecfr_search_regulationsread-only
Full-text search over federal regulations, returning matching sections with hierarchy.
get_audioread-only
Get oral argument audio information by ID from CourtListener.
get_clusterread-only
Get an opinion cluster by ID from CourtListener.
get_courtread-only
Get court information by ID from CourtListener.
get_docketread-only
Get a specific court docket by ID from CourtListener.
get_opinionread-only
Get a specific court opinion by ID from CourtListener.
get_personread-only
Get judge or legal professional information by ID from CourtListener.
search_audioread-only
Search oral argument audio recordings in CourtListener.
search_docketsread-only
Search federal cases (dockets) from PACER in CourtListener.
search_dockets_with_documentsread-only
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_opinionsread-only
Search case law opinion clusters with nested Opinion documents in CourtListener.
search_peopleread-only
Search judges and legal professionals in the CourtListener database.
search_recap_documentsread-only
Search federal filing documents from PACER in the RECAP archive.
status
Check the status of the CourtListener MCP server. Returns: A dictionary containing server status, system metrics, and service information.

Signals

Stars: 4
Forks: 3
Open issues: 3
Last commit: Sep 6, 2026 (1 month ago)
Last release: May 15, 2026 (5 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name: io.github.Vaquill-AI/courtlistener-mcp
Version: 0.1.0
Auth: API key
License: MIT
Repository: github.com/Vaquill-AI/courtlistener-mcp
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry github-graphql

Rank

of 44,833 in Connectors

Score

0.589

Security 30%not yet
Popularity 25%0.48
Freshness 20%0.80
Rating 15%not yet
Docs 10%0.83

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Grades

Freshness

Active in the last 90 days. Last activity 1 month ago.

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Security

Security scan: in progress. Grades from our dependency, secret, code and prompt-injection checks appear here once they launch. Until then, check the code before you install.

Indexed

Found automatically from a public source. Not yet claimed by its publisher.

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Availability

100% uptime, last 30 days (1 check)

Last check: 5 days ago
Status: Up
Median response: 915 ms

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Down
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Cite this page

CourtListener MCP server. Agent Mart. https://agentmart.dev/connectors/vaquill-ai-courtlistener-mcp (last updated 2026-10-24)