Citizens Financial Group

Citizens Authorize API

The Citizens Authorize API is the Citizens identity provider that authenticates a partner and grants access to bank resources such as accounts and transactions. The published contract declares only the token revocation endpoint; the token endpoint that issues the credential is documented in the PDF user guides, and no OAuth or OpenID Connect discovery document is served on any Citizens host. Version 1.0 is production, 2.0 is sandbox.

Documentation GitHub OpenAPI

Operations 1

POST /revoke

Documentation

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Authentication

https://raw.githubusercontent.com/api-evangelist/citizens-financial-group/refs/heads/main/authentication/citizens-financial-group-authentication.yml

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Documentation

https://developer.citizensbank.com/product/88/api/73

Other Resources

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Swagger

https://raw.githubusercontent.com/api-evangelist/citizens-financial-group/refs/heads/main/openapi/citizens-financial-group-authorize-openapi.yml

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OpenAPISource

https://raw.githubusercontent.com/api-evangelist/citizens-financial-group/refs/heads/main/openapi/_original/citizens-authorize-v1.json

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Swagger

https://raw.githubusercontent.com/api-evangelist/citizens-financial-group/refs/heads/main/openapi/citizens-financial-group-authorize-v2-openapi.yml

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OpenAPISource

https://raw.githubusercontent.com/api-evangelist/citizens-financial-group/refs/heads/main/openapi/_original/citizens-authorize-v2-sandbox.json

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Overlay

https://raw.githubusercontent.com/api-evangelist/citizens-financial-group/refs/heads/main/overlays/citizens-financial-group-authorize-overlay.yaml

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Overlay

https://raw.githubusercontent.com/api-evangelist/citizens-financial-group/refs/heads/main/overlays/citizens-financial-group-authorize-v2-overlay.yaml

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OpenAPI Specification

swagger: '2.0'
info:
  title: Authorize
  x-ibm-name: authorize
  version: 1.0.4
  description: The IDP v1.0 is a system that allows authentication of a customer (e.g. Partners) and grants
    permission to the customer to access the bank resources such as Accounts and Transactions.
  x-ibm-summary: ''
  x-source-url: https://developer.citizensbank.com/product/88/api/73
  x-harvested: '2026-09-05'
  x-harvest-method: searched
  x-environment: production
schemes:
- https
basePath: /authorize/v1.0
produces:
- application/json
consumes:
- application/json
security: []
securityDefinitions:
  x-client-id:
    type: apiKey
    description: Identifies the desired financial institution or partners.
    name: x-client-id
    in: header
    x-key-type: client_id
x-ibm-configuration:
  enforced: true
  testable: true
  phase: realized
  cors:
    enabled: false
  type: rest
  application-authentication:
    certificate: false
  servers:
  - url: https://api.citizensbank.com/authorize/v1.0
    type:
    - production
    - development
paths:
  /revoke:
    parameters:
    - name: Authorization
      in: header
      required: true
      description: The token that client wants to revoke
      type: string
    - name: x-client-id
      in: header
      required: true
      description: Identifies the desired financial institution or partners.
      type: string
    post:
      responses:
        '200':
          schema:
            type: string
          description: success
host: api.citizensbank.com