Data and API documentation
The complete directory is available without authentication through stable, cacheable JSON and CSV resources.
Endpoints
/api/providers— versioned collection envelope./api/providers/{slug}— one canonical provider record./api/schema— machine-readable JSON Schema./providers.json— downloadable JSON dataset./providers.csv— flat CSV export./llms.txt— concise retrieval map./llms-full.txt— text summary of all records.
Schema stability
Collection responses expose schemaVersion and are described by the machine-readable JSON Schema. Version 1.x uses stable provider IDs and slugs, ISO 8601 calendar dates, typed status and free-tier fields, canonical URLs, and source objects. Additive fields may appear in minor versions; incompatible changes require a major version.
Provenance
Provider-level sources list official destinations. freeTier.source supports the overall offer; allowance, credit, usage, and trial objects also carry claim-level sources with url, type, and accessedAt. Missing market or referral fields mean no supported value was recorded; they are not negative findings.
Caching and access
Responses permit cross-origin GET access and publish cache headers suitable for agents and applications. Consumers should cache responses, identify their user agent, respect robots.txt, and use the envelope-level datasetUpdatedAt plus provider updatedAt values for change detection.
Attribution and license
See the license page. When presenting a claim, link to its canonical provider page and preserve its verification date.