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Buddy vs Energy-Charts API

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

APIBuddyNEW—Energy-Charts APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Buddy vs Energy-Charts API: common questions

Which is more reliable, Buddy or Energy-Charts API?

On our scheduled checks, Energy-Charts API leads on measured uptime — Buddy at —% versus Energy-Charts API 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 Buddy and Energy-Charts API need an API key?

Energy-Charts API needs no key, while Buddy requires a free API key. If you want to start calling without signup, reach for Energy-Charts API first.

Can I call Buddy and Energy-Charts API from the browser?

Yes — both Buddy and Energy-Charts API 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 Buddy and Energy-Charts API free for commercial use?

Buddy has unclear commercial terms, and Energy-Charts API 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.