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Crates.io vs FastApi Simple Calculator

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

APICrates.ioHEALTHY90FastApi Simple CalculatorHEALTHY93
Uptime · 30d
Uptime · 90d99.02%96.1%
Uptime · 30d100%95.0%
P50 · ms458315
P95 · ms1317778
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Crates.io vs FastApi Simple Calculator: common questions

Which is more reliable, Crates.io or FastApi Simple Calculator?

On our scheduled checks, Crates.io leads on measured uptime — Crates.io at 99.02% versus FastApi Simple Calculator at 96.1% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Crates.io or FastApi Simple Calculator?

FastApi Simple Calculator has the lower median latency in our checks — Crates.io responds in 458 ms versus FastApi Simple Calculator at 315 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 Crates.io and FastApi Simple Calculator need an API key?

Neither needs a paid key — Crates.io is callable with no signup, and FastApi Simple Calculator is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Crates.io and FastApi Simple Calculator from the browser?

Only Crates.io is browser-friendly — it returns CORS headers over HTTPS. FastApi Simple Calculator needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Crates.io and FastApi Simple Calculator free for commercial use?

Crates.io has unclear commercial terms, and FastApi Simple Calculator 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.