Connexis Cash PSD2 Account Information API (STET)
A PSD2-compliant Account Information Service (AISP) API exposed by BNP Paribas Corporate and Institutional Banking. Third-party providers consume this REST/JSON API, which follows the STET PSD2 standard, to retrieve account information for Connexis Cash users. Production uses OAuth2 Authorization Code Grant with QWAC certificates; the sandbox uses Client Credentials. Onboarded TPPs must supply QWAC certificates, callback URLs, and EBA reference codes.