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Third Party Provider (TPP) ​

Treezor Open Banking APIs provide PSD2-compliant access to account information and payment services. Our implementation follows the STET PSD2 API specification v1.6.3.

Available APIs:

  • AISP API – Account Information Service Provider
  • OAuth2 API – Authentication and authorization

Prerequisites ​

1. TPP Registration ​

TPP onboarding is performed manually by Treezor. Contact Treezor support to register as a Third Party Provider (TPP) with the appropriate role:

  • AISP – Account Information Service Provider
  • PISP – Payment Initiation Service Provider
  • CBPII – Card Based Payment Instrument Issuer
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Information – AISP Support only

As of today, Treezor only supports AISP services. Treezor teams currently work on providing PISP services.

2. eIDAS Certificate ​

You need a valid eIDAS certificate (QWAC - Qualified Website Authentication Certificate) issued by a qualified trust service provider. The certificate must contain:

  • Organization Identifier in the Distinguished Name
  • Authorization Number matching your TPP registration

3. Client Registration ​

Register your application to obtain:

  • client_id – Must match or be linked to your Organization Identifier
  • client_secret — For OAuth2 authentication
  • Redirect URIs – For OAuth2 authorization flow