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Financial Data vs GOV.UK Pay API

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

APIFinancial DataNEW—GOV.UK Pay APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Financial Data vs GOV.UK Pay API: common questions

Which is more reliable, Financial Data or GOV.UK Pay API?

On our scheduled checks, GOV.UK Pay API leads on measured uptime — Financial Data 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 Financial Data and GOV.UK Pay API need an API key?

Both ask you to authenticate — Financial Data uses an API key and GOV.UK Pay API uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Financial Data and GOV.UK Pay API from the browser?

Neither sends browser-friendly CORS headers reliably, so call Financial Data 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 Financial Data and GOV.UK Pay API free for commercial use?

Financial Data 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.