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APIs.guru vs FakeStoreAPI

Same instrument, two spec sheets — measured, not claimed.

APIAPIs.guruNEW—FakeStoreAPINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree and open, no keyFree — no key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

APIs.guru vs FakeStoreAPI: common questions

Which is more reliable, APIs.guru or FakeStoreAPI?

On our scheduled checks, FakeStoreAPI leads on measured uptime — APIs.guru at —% versus FakeStoreAPI at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do APIs.guru and FakeStoreAPI need an API key?

Neither needs a paid key — APIs.guru is callable with no signup, and FakeStoreAPI is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call APIs.guru and FakeStoreAPI from the browser?

Yes — both APIs.guru and FakeStoreAPI send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are APIs.guru and FakeStoreAPI free for commercial use?

APIs.guru has unclear commercial terms, and FakeStoreAPI has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.