Finance · industry standard

UK Open Banking Standard (OBIE Read/Write API Specification)

The UK Open Banking Standard is the machine-readable API specification created by the Open Banking Implementation Entity (OBIE, now Open Banking Limited) under the Competition and Markets Authority’s remedy and the PSD2 mandate. It defines a common Read/Write API family — Account and Transaction Information (AIS), Payment Initiation (PIS), Confirmation of Funds (CBPII), and the unauthenticated Open Data APIs — that the CMA9 and other UK account providers implement to a single conformance-tested contract, secured with FAPI-grade OAuth2/OIDC, mTLS, and PSD2 strong customer authentication.

www.openbanking.org.uk/The standard

2018First published

Yes — OpenAPIMachine-readable schema · open

0providers in the catalog

Also known as OBIE Standard, Open Banking Read/Write API Specification, CMA9 Open Banking, Open Banking UK, OBIE Read/Write.

Providers that carry UK Open Banking Standard 0

No provider in the catalog carries this standard as a tag yet. That is a statement about the catalog's tagging, not about adoption: a provider that implements UK Open Banking Standard and says so in its APIs.json profile appears here on the next build. Add or correct a listing.

Read from the API Evangelist standards directory, facts verified 2026-08-17. Provider links come from the catalog's own identity tags and are rebuilt nightly. If this page is wrong about a standard or a provider, say so.