Tandem Bank Confirmation of Funds API (CBPII)
Tandem Bank's Open Banking Confirmation of Funds Service (CBPII) allowing card-based payment instrument issuers to confirm the availability of funds. Delivered through Tandem's PSD2 dedicated interface (provided by Token), conformant to the OBIE Read/Write Confirmation of Funds API Standard. FAPI-secured (OAuth2/OIDC, mutual-TLS, PSD2 SCA); production base URL is issued per authorised TPP during Token onboarding and is not publicly published. The attached OpenAPI is the shared OBIE standard specification, not a Tandem-proprietary contract.
Documentation
Documentation
https://developer.token.io/
APIReference
https://github.com/OpenBankingUK/read-write-api-specs