Number26 · Authentication Profile

Number26 Xs2A Authentication

Authentication

Number26 secures its APIs with http and mutualTLS across 2 declared security schemes, as derived from its OpenAPI definitions.

CompanyFintechBankingNeobankMobile BankingPaymentsEuropeGermany
Methods: http, mutualTLS Schemes: 2 OAuth flows: API key in:

Security Schemes

bearerAuth http
scheme: bearer
eidas-qwac mutualTLS

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-20'
method: searched
source: openapi/number26-xs2a-openapi-original.yml
docs: https://github.com/n26/psd2-tpp-docs
summary:
  types: [http, mutualTLS]
  http_schemes: [bearer]
  notes: >-
    N26's XS2A (Access to Account) interface follows the Berlin Group NextGenPSD2
    1.3.6 standard under EU PSD2. Third-party providers (AISP/PISP/CBPII) must
    present a valid eIDAS QWAC certificate (role-specific for AIS vs PIS) at the
    TLS layer (mutual TLS), then obtain an OAuth2 bearer access token via the
    dedicated interface's authorization step before calling the account/consent
    endpoints. Account-data calls additionally carry a Consent-ID header bound to
    a previously approved consent.
schemes:
  - name: bearerAuth
    type: http
    scheme: bearer
    sources: [openapi/number26-xs2a-openapi-original.yml]
  - name: eidas-qwac
    type: mutualTLS
    description: >-
      eIDAS QWAC (Qualified Website Authentication Certificate) required at the
      transport layer; role-specific certificates for AIS and PIS, with concurrent
      certificate support for automatic renewal.
    sources: [https://github.com/n26/psd2-tpp-docs]
consent_binding:
  header: Consent-ID
  description: >-
    Account information endpoints require a Consent-ID header referencing a
    consent resource created via POST /consents and approved by the PSU.

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