Development — entry 099 of 100
GreatAPIs
GreatAPIs is a curated, always-live directory of public web APIs, published as a machine-readable feed at /index.json — every live entry with auth, HTTPS, CORS, pricing, and docs metadata, plus per-API records at /api/<slug>.json and plain-text listings at /llms.txt and /llms-full.txt for LLMs and agents. No key required; the JSON is a static build served over HTTPS (no CORS headers, so call it server-side).
AuthenticationNone requiredCall it straight away — no key, no signup.
HTTPSSupportedTraffic is encrypted in transit.
CORSDisabledBrowser calls need a server-side proxy.
PricingFreeNo paid tier — free for the documented use case.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score88
Authentication25/25No authentication required
Pricing20/20Free to use
Docs14/20Documentation URL provided
Formats9/15Single response format
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/greatapis/"><img src="https://greatapis.com/badge/greatapis.svg" alt="Scored 88 on greatapis.com"></a>Auth quickstart
- No key needed — call it now.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.