Fiserv · Authentication Profile

Fiserv Authentication

Authentication

Fiserv secures its APIs with apiKey and http across 4 declared security schemes, as derived from its OpenAPI definitions.

BankingFinancialPaymentsWealth ManagementFortune 500
Methods: apiKey, http Schemes: 4 OAuth flows: API key in: header

Security Schemes

bearerAuth http
scheme: bearer
basicAuth http
scheme: basic
apiKeyAuth apiKey
· in: header (Api-Key)
hmacAuth apiKey
· in: header (Authorization)

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-11'
method: derived
source: openapi/fiserv-bankinghub-openapi.yml, openapi/fiserv-carddeveloper-openapi.yml, openapi/fiserv-cardpointe-gateway-openapi.yml,
  openapi/fiserv-commercehub-openapi.yml
summary:
  types:
  - apiKey
  - http
  api_key_in:
  - header
schemes:
- name: bearerAuth
  type: http
  scheme: bearer
  bearerFormat: JWT
  description: OAuth 2.0 Bearer token for API authentication.
  sources:
  - openapi/fiserv-bankinghub-openapi.yml
  - openapi/fiserv-carddeveloper-openapi.yml
- name: basicAuth
  type: http
  scheme: basic
  description: HTTP Basic authentication using the CardPointe Gateway credentials.
  sources:
  - openapi/fiserv-cardpointe-gateway-openapi.yml
- name: apiKeyAuth
  type: apiKey
  in: header
  parameter: Api-Key
  description: API key provided by Fiserv for authenticating requests.
  sources:
  - openapi/fiserv-commercehub-openapi.yml
- name: hmacAuth
  type: apiKey
  in: header
  parameter: Authorization
  description: HMAC signature generated using the API secret, request timestamp, and request
    payload for message integrity verification.
  sources:
  - openapi/fiserv-commercehub-openapi.yml

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