Mastercard Gateway API · Authentication Profile

Mastercard Gateway Api Authentication

Authentication

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

Credit CardsGatewayPayment ProcessingPayments
Methods: http, mutualTLS Schemes: 2 OAuth flows: API key in:

Security Schemes

BasicAuth http
scheme: basic
CertificateAuth mutualTLS

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-11'
method: derived
source: openapi/mastercard-gateway-api-openapi.yml
summary:
  types:
  - http
  - mutualTLS
schemes:
- name: BasicAuth
  type: http
  scheme: basic
  description: |-
    HTTP Basic authentication using `merchant.<merchantId>` as the
    username and the API password (integration password) as the
    password.
  sources:
  - openapi/mastercard-gateway-api-openapi.yml
- name: CertificateAuth
  type: mutualTLS
  description: |-
    Client-certificate (mutual TLS) authentication, available as an
    alternative to password-based merchant authentication.
  sources:
  - openapi/mastercard-gateway-api-openapi.yml