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Energy-Charts API vs OWASP API Security Project

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

APIEnergy-Charts APIHEALTHY81OWASP API Security ProjectHEALTHY98
Uptime · 30d
Uptime · 90d99.02%100%
Uptime · 30d98.3%100%
P50 · ms1178205
P95 · ms28551646
Authnonenone
CORSyesyes
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

Energy-Charts API vs OWASP API Security Project: common questions

Which is more reliable, Energy-Charts API or OWASP API Security Project?

On our scheduled checks, OWASP API Security Project leads on measured uptime — Energy-Charts API at 99.02% versus OWASP API Security Project at 100% 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, Energy-Charts API or OWASP API Security Project?

OWASP API Security Project has the lower median latency in our checks — Energy-Charts API responds in 1178 ms versus OWASP API Security Project at 205 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 Energy-Charts API and OWASP API Security Project need an API key?

Neither needs a paid key — Energy-Charts API is callable with no signup, and OWASP API Security Project is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Energy-Charts API and OWASP API Security Project from the browser?

Yes — both Energy-Charts API and OWASP API Security Project 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 Energy-Charts API and OWASP API Security Project free for commercial use?

Energy-Charts API has unclear commercial terms, and OWASP API Security Project 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.