CourtListener

CourtListener is a free legal research service combining U.S. case-law search with an extensive federal docket archive. It is best for researchers, legal professionals, journalists, and developers who value public access to court data over generous non-member quotas. Its scale is compelling, but frequent docket monitoring or API use may call for a paid tier.

Overview

Founded in 2010, CourtListener is an open-source project from Oakland-based Free Law Project. It brings opinions, oral arguments, judges, judicial financial records, and federal filings into a searchable archive. Its RECAP Archive covers nearly every federal case, with hundreds of millions of docket entries and tens of millions of legal documents. That reach makes CourtListener useful not only for finding opinions but also for following federal litigation and exploring court records.

Key features

Research and alerts

Case-law and docket search, citation tools, and coverage of U.S. federal and state courts make CourtListener a broad starting point for legal research. Alerts can monitor topics, people, companies, citations, and other searches. The free non-member tier allows five docket alerts and five daily RECAP search alerts, which can be restrictive for a busy practice; unlimited daily opinion search alerts are more generous for users focused on case law.

Developer and AI access

Free Law Project provides REST APIs, bulk data files, webhooks, database replication, and an MCP server. Developers can choose among several ways to work with the data, while the API quotas rise by paid tier. The MCP server connects CourtListener data and APIs to Claude, ChatGPT, and other AI assistants, a useful route for teams building AI-assisted research workflows without replacing the underlying source archive.

Support and security

Help documentation covers memberships and donations, data coverage, developer documentation, content removal, and direct support. Free Law Project's vulnerability disclosure policy covers CourtListener, its API, alerts, and RECAP extensions, and requests coordinated disclosure for up to 90 days. The policy says DNSSEC is not currently planned, a limitation worth noting for organizations assessing security posture.

Pricing

CourtListener has a free non-member tier and four paid tiers. EDU memberships are complimentary for faculty, students, and researchers with a valid.edu email address; LSO memberships are free for qualifying U.S.-based nonprofit legal services organizations.

PlanPriceWhat it includesFree Tier Non-Membersfree5 docket alerts; unlimited daily opinion search alerts; 5 daily RECAP search alerts; 5 Pray & Pay requests; API 5/minute, 50/hour, 125/day.Tier 1$10,100 a month (billed $10/mo or $100/yr)Unlimited docket alerts and real-time opinion search alerts; 10 daily and 5 real-time RECAP search alerts; 15 Pray & Pay requests; API 10/minute, 75/hour, 300/day.Tier 2$25,250 a month (billed $25/mo or $250/yr)Unlimited docket alerts and real-time opinion search alerts; 25 daily and 10 real-time RECAP search alerts; 15 Pray & Pay requests; API 15/minute, 150/hour, 600/day; $38 shop credits.Tier 3$50,500 a month (billed $50/mo or $500/yr)Unlimited docket alerts and real-time opinion search alerts; 50 daily and 25 real-time RECAP search alerts; 15 Pray & Pay requests; API 20/minute, 250/hour, 1,000/day; $75 shop credits.Tier 4$1,001,000 a month (billed $100/mo or $1000/yr)Unlimited docket alerts and real-time opinion search alerts; 100 daily and 50 real-time RECAP search alerts; 15 Pray & Pay requests; API 25/minute, 300/hour, 1,400/day; $150 shop credits.The free tier suits occasional docket work and broad opinion-alert monitoring, but its five docket alerts and low API allowance can pinch when tracking multiple matters or running frequent requests. Tier 1 removes the docket-alert cap and increases API throughput, while keeping RECAP searches limited; the higher tiers chiefly buy more RECAP searches, larger API quotas, and shop credits. EDU and LSO memberships are the free route for eligible academic users and qualifying nonprofit legal-services organizations.

Platforms

CourtListener runs on the web. Its REST APIs, data files, webhooks, database replication, and MCP server also make it relevant to developers integrating legal data into other tools.

Who it's for

The service can serve lawyers, journalists, academics, the public, researchers, and organizations. It is particularly well suited to people who need broad access to U.S. opinions and federal docket material, or developers who want public legal data and multiple integration options. It is less suited to users who need high-volume alerts or API access without paying for a higher tier.

Pros and cons

Pros

Extensive federal record: RECAP's near-complete federal case coverage and large collection of docket entries and documents support research beyond published opinions.

Useful free research access: Case-law search, docket search, citation tools, and unlimited daily opinion search alerts provide meaningful scope without a paid plan.

Multiple developer routes: APIs, bulk files, webhooks, database replication, and MCP support different integration needs.

Eligible groups can access free memberships: EDU and LSO memberships cover qualifying academics and nonprofit legal-services organizations.

Cons

Non-member monitoring is capped: Five docket alerts and five daily RECAP search alerts may not cover a large caseload or intensive docket research.

API use has firm quotas: The free allowance is 5/minute, 50/hour, and 125/day, so developers with heavier request volume need a paid tier.

Security policy has a stated gap: DNSSEC is not currently planned, which may matter in organizations evaluating security requirements.

Alternatives

Legal Research Software is the broader category for comparing tools. Fastcase is worth considering if you want a freemium service with Android, iOS, web, and Windows apps, or its Appellate plan at $65 a month for 50-state and federal law, appellate cases, and nationwide statutes and regulations without a contract.

Indian Kanoon is another freemium option, with Android, API, and web access. Docket Alarm may suit readers seeking a docket-focused freemium service; its free plan allows five actions per week across searches, docket views, and document views, excluding government-purchased documents such as PACER filings.

LegitQuest is a freemium alternative with API and web access. RECAP is another free option from Free Law Project. BAILII offers free web access to its databases, but does not permit bulk downloading.

CaseMine is a freemium API and web alternative; its Essential plan is priced at £499 a year. HeinOnline is a paid web service that also offers a complimentary Social Justice Suite to interested organizations and institutions.

Verdict

CourtListener is the right choice for researchers and developers who want broad, free access to U.S. opinions and federal court records, especially when the RECAP archive is central to their work. Its developer options and scope are strong reasons to start here. Look elsewhere or budget for a paid tier if your work depends on many simultaneous docket alerts, frequent RECAP searches, or higher API throughput.