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Onyx Bazaar vs PredictHQ

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

APIOnyx BazaarNEW—PredictHQNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Onyx Bazaar vs PredictHQ: common questions

Which is more reliable, Onyx Bazaar or PredictHQ?

On our scheduled checks, PredictHQ leads on measured uptime — Onyx Bazaar at —% versus PredictHQ 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 Onyx Bazaar and PredictHQ need an API key?

Onyx Bazaar needs no key, while PredictHQ requires a free API key. If you want to start calling without signup, reach for Onyx Bazaar first.

Can I call Onyx Bazaar and PredictHQ from the browser?

Yes — both Onyx Bazaar and PredictHQ 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 Onyx Bazaar and PredictHQ free for commercial use?

Onyx Bazaar has unclear commercial terms, and PredictHQ 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.