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APIs.guru vs FakeStoreAPI

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

APIAPIs.guruHEALTHY97FakeStoreAPIHEALTHY94
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms266369
P95 · ms14212305
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?

Both are neck-and-neck — APIs.guru and FakeStoreAPI each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, APIs.guru or FakeStoreAPI?

APIs.guru has the lower median latency in our checks — APIs.guru responds in 266 ms versus FakeStoreAPI at 369 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

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.