x-fapi-financial-id
vendor
request
reached by regulation
Declared by 5 providers across 98 published specification files in the APIs.io network.
A count here is providers whose published contract declares this header — not
providers who send it. Response headers set at the edge rarely appear in an OpenAPI at all, so a low
number can measure documentation practice rather than deployment.
Reached by regulation
Basis: mandated.
The law, or a technical standard the law makes binding, names this header.
Only a credentialed caller can observe it in flight — the catalog can see a contract declare it, not a deployment honour it.
Carried by the uk-open-banking-standard standard.
Providers declaring it (5)
algbra bmo c-hoare-and-co open-banking-uk revolut
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