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BuyWhere vs Energy-Charts API

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

APIBuyWhereHEALTHY86Energy-Charts APIHEALTHY81
Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d100%98.3%
P50 · ms4401178
P95 · ms19012855
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

BuyWhere vs Energy-Charts API: common questions

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

Both are neck-and-neck — BuyWhere and Energy-Charts API each measure 99.02% 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, BuyWhere or Energy-Charts API?

BuyWhere has the lower median latency in our checks — BuyWhere responds in 440 ms versus Energy-Charts API at 1178 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 BuyWhere and Energy-Charts API need an API key?

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

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

Only Energy-Charts API is browser-friendly — it returns CORS headers over HTTPS. BuyWhere needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are BuyWhere and Energy-Charts API free for commercial use?

BuyWhere 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.