NatWest Group · Authentication Profile

Natwest Authentication

Authentication

NatWest Group secures its APIs with oauth2, openIdConnect, and mutualTLS across 2 declared security schemes, as derived from its OpenAPI definitions. OAuth 2.0 is offered via the authorizationCode, clientCredentials, and refreshToken flow(s).

BankingOpen BankingFinancial-ServicesPaymentsPSD2FAPIFintechAccount Information
Methods: oauth2, openIdConnect, mutualTLS Schemes: 2 OAuth flows: authorizationCode, clientCredentials, refreshToken API key in:

Security Schemes

TPPOAuth2Security oauth2
PSUOAuth2Security oauth2

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-20'
method: searched
source: https://api.sandbox.natwest.com/.well-known/openid-configuration
docs: https://www.bankofapis.com/documentation/security
summary:
  types:
  - oauth2
  - openIdConnect
  - mutualTLS
  oauth2_flows:
  - authorizationCode
  - clientCredentials
  - refreshToken
  fapi: true
  psd2_sca: true
  standard: FAPI 1.0 Advanced (OBIE Read/Write) with PSD2 strong customer authentication
profile:
  issuer: https://api.sandbox.natwest.com
  authorization_endpoint: https://api.sandbox.natwest.com/authorize
  token_endpoint: https://ob.sandbox.natwest.com/token
  registration_endpoint: https://ob.sandbox.natwest.com/register
  jwks_uri: https://keystore.openbankingtest.org.uk/0015800000jfwxXAAQ/0015800000jfwxXAAQ.jwks
  scopes_supported: [openid, payments, accounts, fundsconfirmations, profile]
  grant_types_supported: [authorization_code, refresh_token, client_credentials]
  response_types_supported: ['code id_token']
  response_modes_supported: [fragment]
  acr_values_supported: ['urn:openbanking:psd2:ca']
  token_endpoint_auth_methods_supported: [tls_client_auth, private_key_jwt]
  id_token_signing_alg_values_supported: [PS256]
  request_object_signing_alg_values_supported: [PS256]
  tls_client_certificate_bound_access_tokens: true
  claims_supported: [aud, exp, iat, iss, acr, openbanking_intent_id, sub]
  dynamic_client_registration: true
  certificates: OBIE / eIDAS (OBWAC transport + OBSEAL signing) certificates required
schemes:
- name: TPPOAuth2Security
  type: oauth2
  flow: clientCredentials
  description: TPP client-credentials flow with the ASPSP (obtain a consent/token before PSU authorisation).
  tokenUrl: https://ob.sandbox.natwest.com/token
  sources:
  - openapi/natwest-account-transaction-openapi.yml
  - openapi/natwest-confirmation-of-funds-openapi.yml
  - openapi/natwest-payment-initiation-openapi.yml
- name: PSUOAuth2Security
  type: oauth2
  flow: authorizationCode
  description: PSU authorisation-code flow with PSD2 SCA (customer approves the consent/payment).
  authorizationUrl: https://api.sandbox.natwest.com/authorize
  tokenUrl: https://ob.sandbox.natwest.com/token
  sources:
  - openapi/natwest-account-transaction-openapi.yml
  - openapi/natwest-confirmation-of-funds-openapi.yml
  - openapi/natwest-payment-initiation-openapi.yml
notes: |
  Live-verified against the sandbox OIDC discovery document. Client authentication
  to the token endpoint is mutual-TLS (tls_client_auth) or private_key_jwt, both
  PS256. Access tokens are certificate-bound. Every request also carries a detached
  JWS (x-jws-signature) for message integrity on payment/consent operations, and
  x-fapi-* headers for FAPI interaction context. Requires dynamic client
  registration with OBIE/eIDAS certificates.

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