OBIE Account and Transaction Information API (AIS, shared standard)
The OBIE Read/Write Account and Transaction Information (AIS) standard for retrieving account, balance, transaction, and beneficiary data with customer consent, secured with FAPI-grade OAuth2/OIDC, mutual-TLS, and PSD2 strong customer authentication. Captured here as the shared OBIE standard reference; Leeds Building Society does not offer current accounts and does not publish this API. Unverified for this bank - no base URL was confirmed.