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U.S. legal data API providing court opinions, docket entries, judge profiles, financial disclosures, and PACER records via RECAP archive. Best for legal research workflows — case law analysis, litigation monitoring, and judicial background checks. The most comprehensive open-access legal data API — unlike GLEIF (entity identification), CourtListener covers the full breadth of U.S. court proceedings. 2 example endpoints available through Lava’s AI Gateway. See the CourtListener API docs for full documentation.
Supports both managed (Lava’s API keys) and unmanaged (bring your own credentials) mode.
This is a catch-all provider — any valid URL under https://www.courtlistener.com/api/rest/v4 is supported. CourtListener legal data API. Construct URL as https://www.courtlistener.com/api/rest/v4/{endpoint}/. Common endpoints: /search/?q=first+amendment&type=o (opinions), /dockets/, /opinions/, /people/, /courts/. Note trailing slash is required. Auth is automatic. The endpoints below are curated examples.

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Endpoints

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Search court opinions

GET https://www.courtlistener.com/api/rest/v4/search/?q=first+amendment&type=o — Free

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Search dockets

GET https://www.courtlistener.com/api/rest/v4/search/?q=patent+infringement&type=d — Free

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