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Bill Payment Validator vs GOV.UK Pay API

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

APIBill Payment ValidatorNEW—GOV.UK Pay APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
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

Bill Payment Validator vs GOV.UK Pay API: common questions

Which is more reliable, Bill Payment Validator or GOV.UK Pay API?

On our scheduled checks, GOV.UK Pay API leads on measured uptime — Bill Payment Validator at —% versus GOV.UK Pay 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 Bill Payment Validator and GOV.UK Pay API need an API key?

Bill Payment Validator needs no key, while GOV.UK Pay API requires a free API key. If you want to start calling without signup, reach for Bill Payment Validator first.

Can I call Bill Payment Validator and GOV.UK Pay API from the browser?

Neither sends browser-friendly CORS headers reliably, so call Bill Payment Validator and GOV.UK Pay API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Bill Payment Validator and GOV.UK Pay API free for commercial use?

Bill Payment Validator has unclear commercial terms, and GOV.UK Pay 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.