Courtlistener MCP server

online · 100% uptime

by cyanheads·io.github.cyanheads/courtlistener-mcp-server·v0.9.0·4 stars

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Search US court opinions, federal dockets, judges, citations, and oral arguments via CourtListener.

A93/100grade A

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Safety scan

A93/100

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Adoption

Growing

4 stars303 downloads/wk

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How Courtlistener compares

Against every graded Web search MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 93/100; higher than 95% of 3,470 Web search servers
Uptime: 100%; of our recent checks; the typical remote Web search server answers 100%
Response time: 226 ms; faster than 63% of 2,238 Web search servers
GitHub stars: 4; more than 75% of 1,786 Web search servers
Downloads a week: 303; more than 77% of 827 Web search servers with a package

Release history: 4 versions in the registry since 2026-08-25, latest 2026-11-01, typically one every 18 days.

Install Courtlistener in Claude Code, Cursor or VS Code

claude mcp add --transport http courtlistener-mcp-server https://courtlistener.caseyjhand.com/mcp

Add to Cursor

What the publisher says

From the Courtlistener repository's README, as published. We do not edit it. Read it on GitHub

@cyanheads/courtlistener-mcp-server Search and retrieve US court opinions, federal dockets, judge records, citation networks, and oral arguments from CourtListener's 9M+ opinion corpus via MCP. STDIO or Streamable HTTP. 14 Tools

Public Hosted Server: https://courtlistener.caseyjhand.com/mcp

Overview

US court opinions, federal dockets, judge records, and oral arguments from CourtListener's 9M+ opinion corpus and its RECAP mirror of federal PACER filings. Search opinions and dockets, trace citation networks and precedent chains, look up judges and courts, and pull judicial financial disclosures from any MCP client. Runs as a stdio process, a local Streamable HTTP server, or the public hosted endpoint above.

Tools

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Courtlistener: common questions

Is Courtlistener MCP server safe?: Yes, by our scan: it is graded A (93/100). Read the Courtlistener safety report
How do I install Courtlistener?: It runs remotely at courtlistener.caseyjhand.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Courtlistener need an API key?: No secret keys are declared. It reads 8 settings from the environment.
Is Courtlistener maintained?: The last commit was 17 days ago (2026-10-18). The latest release is v0.9.0.
Is Courtlistener up?: 100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Courtlistener?: Servers from other publishers that do the same job: Arxiv MCP server, obsei MCP server and Zoteus MCP server.
How does Courtlistener compare with other Web search MCP servers?: safety score 93/100 (higher than 95% of 3,470 Web search servers); uptime 100% (of our recent checks; the typical remote Web search server answers 100%); response time 226 ms (faster than 63% of 2,238 Web search servers). Full comparison.

Alternatives to Courtlistener

Same job from other publishers: the closest match first, then the best rated.

Arxiv
Search arXiv papers, download full text, semantic search, citation graphs, and alerts via MCP.
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obsei
Self-hosted customer feedback with PII stripped at ingest: search, stats and themes with citations.
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Zoteus
Zotero MCP server for Claude and ChatGPT: search, citations, safe writes, PDF passages and pages.
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GEO Tracker by DigestSEO
Track brand citations across seven AI search surfaces. Free OSS; optional EUR 99 client-ready audit.
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Semantic Scholar MCP Server
MCP server for the Semantic Scholar API: search 200M+ papers, citations, authors, recommendations.
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Run it through the gateway

With the gateway added, ask your agent for it by name:

agent prompt

call io.github.cyanheads/courtlistener-mcp-server → <tool>

Free per call. Metered, capped by your key, logged for reliability.

Add the gateway (gw.mcp.market)

Rating: —
Safety grade: A · 93/100
Stars: 4
Downloads/wk: 303
Price: Free
Licence: Apache-2.0
Transport: Remote · mixed
Uptime: 100% · 28/28 checks
Version: 0.9.0
Category: Web search
Last release: 2026-10-18

Credentials it needs

COURTLISTENER_API_TOKENCourtListener API token from your account settings. Required for API access.
MCP_LOG_LEVELSets the minimum log level for output (e.g., 'debug', 'info', 'warn').
MCP_TRANSPORT_TYPESelects the HTTP transport.
MCP_HTTP_HOSTThe hostname for the HTTP server.
MCP_HTTP_PORTThe port to run the HTTP server on.
MCP_HTTP_ENDPOINT_PATHThe endpoint path for the MCP server.
MCP_AUTH_MODEAuthentication mode to use: 'none', 'jwt', or 'oauth'.
MCP_LOG_LEVELSets the minimum log level for output (e.g., 'debug', 'info', 'warn').

Endpoint

https://courtlistener.caseyjhand.com/mcp

streamable-http

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