# CourtListener

**Canonical:** https://apis.io/providers/court-listener/  
**Website:** https://www.courtlistener.com/  
**APIs profiled:** 21

CourtListener is a free legal research platform operated by the Free Law Project, a nonprofit organization. It provides a comprehensive REST API for accessing US court opinions, dockets, oral arguments, judge biographical data, financial disclosures, and citation networks from federal and state courts. The platform archives over 9 million case law decisions, 500 million PACER-related items, 3.4 million minutes of oral arguments, and data on 16,000+ judges. Access is available through a membership model with rate limits scaling by tier; an EDU tier is free for academic users.

## Kin Score — 41.2 / 100 (developing)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 41.2).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 62.9 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 50.0 |
| Access Clarity | 50.0 |

Regulatory layer — **Government & Public Sector**: 31.5 (matched via tags).

## Agent readiness — 34.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (21)

- **CourtListener Alerts API** — The Alerts API from CourtListener — 2 operation(s) for alerts.
- **CourtListener Audio API** — The Audio API from CourtListener — 2 operation(s) for audio.
- **CourtListener Citation API** — The Citation API from CourtListener — 1 operation(s) for citation.
- **CourtListener Cited By API** — The Cited By API from CourtListener — 1 operation(s) for cited by.
- **CourtListener Cites API** — The Cites API from CourtListener — 1 operation(s) for cites.
- **CourtListener Courts API** — The Courts API from CourtListener — 2 operation(s) for courts.
- **CourtListener Coverage API** — The Coverage API from CourtListener — 1 operation(s) for coverage.
- **CourtListener Docket Alerts API** — The Docket Alerts API from CourtListener — 2 operation(s) for docket alerts.
- **CourtListener Docket Entries API** — The Docket Entries API from CourtListener — 2 operation(s) for docket entries.
- **CourtListener Dockets API** — The Dockets API from CourtListener — 2 operation(s) for dockets.
- **CourtListener Financial Disclosures API** — The Financial Disclosures API from CourtListener — 2 operation(s) for financial disclosures.
- **CourtListener FJC Database API** — The FJC Database API from CourtListener — 2 operation(s) for fjc database.
- **CourtListener Jurisdiction API** — The Jurisdiction API from CourtListener — 1 operation(s) for jurisdiction.
- **CourtListener Opinion API** — The Opinion API from CourtListener — 1 operation(s) for opinion.
- **CourtListener Opinion Clusters API** — The Opinion Clusters API from CourtListener — 2 operation(s) for opinion clusters.
- **CourtListener Opinions API** — The Opinions API from CourtListener — 2 operation(s) for opinions.
- **CourtListener People API** — The People API from CourtListener — 2 operation(s) for people.
- **CourtListener Positions API** — The Positions API from CourtListener — 2 operation(s) for positions.
- **CourtListener RECAP Documents API** — The RECAP Documents API from CourtListener — 2 operation(s) for recap documents.
- **CourtListener Search API** — The Search API from CourtListener — 3 operation(s) for search.
- **CourtListener Visualizations API** — The Visualizations API from CourtListener — 2 operation(s) for visualizations.

## Agentic access (1)

- **Court Listener Agentic Access** — 37 operations

## Security (2)

- **Court Listener Authentication** — apiKey/http · 3 schemes
- **Court Listener Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Court Listener Plans Pricing**

## Tags

Legal, Court Data, Case Law, PACER, Judicial, Citations, Oral Arguments, Federal Courts, State Courts, Open Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/court-listener/). Scores are computed from the provider's own public artifacts under a published rubric.