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Energy-Charts API vs GLEIF LEI API

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

APIEnergy-Charts APINEW—GLEIF LEI APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
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 GLEIF LEI API: common questions

Which is more reliable, Energy-Charts API or GLEIF LEI API?

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

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

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

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

Energy-Charts API has unclear commercial terms, and GLEIF LEI 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.