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IBAN Validation API vs Municipal Finance API

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

APIIBAN Validation APINEW—Municipal Finance 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

IBAN Validation API vs Municipal Finance API: common questions

Which is more reliable, IBAN Validation API or Municipal Finance API?

On our scheduled checks, Municipal Finance API leads on measured uptime — IBAN Validation API at —% versus Municipal Finance 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 IBAN Validation API and Municipal Finance API need an API key?

Neither needs a paid key — IBAN Validation API is callable with no signup, and Municipal Finance API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call IBAN Validation API and Municipal Finance API from the browser?

Yes — both IBAN Validation API and Municipal Finance 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 IBAN Validation API and Municipal Finance API free for commercial use?

IBAN Validation API has unclear commercial terms, and Municipal Finance 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.