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PSD2 API Developer Portal

In the scope of the European Payment Services Directive 2015/2366 (also known as PSD2), Crédit Mutuel provides API access to qualified Third Party Payment Service Providers for the following purposes:

  • Account and Transaction Information for Account Information Service Providers (AISPs)
  • Checking of Funds Coverage for Card-Based Payment Instrument Issuers (CBPIIs)
  • Payment Initiation for Payment Initiation Service Providers (PISPs)

These APIs are available at, with a sandbox environment at

Recent and upcoming changes

Stay up-to-date with our updates feed:


API Specifications

If you want to dive directly into the APIs, they are documented as OpenAPI Specification (Swagger) files:

  • View OAuth 2 Endpoints Specification
  • Open Banking API Endpoints Specification:
    • View v1 End-of-life on January 13, 2021

    • View v1.1 Published


      • GET /accounts: the name of the account entry that represents a set of card-based transactions now specifies the holder name;
      • GET /accounts/{accountResourceId}/balances: the list of balances for a set of card-based transactions now contains additional balance objects, materializing per-booking-date transaction amounts;
      • GET /accounts/{accountResourceId}/transactions: for pending card-based transactions, bookingDate is now set to the expected booking date - it was previously left unset;
      • GET /accounts/{accountResourceId}/transactions: for cash-account transactions, bookingDate is now always set to the actual booking date on the user's account;
      • GET /accounts/{accountResourceId}/transactions: for card-based transactions, unstructured remittance information may now include location information;

API specifications updates and deprecation announcements are also in our updates feed.

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