Customer.io · Authentication Profile

Customerio Authentication

Authentication

Customer.io secures its APIs with http across 2 declared security schemes, as derived from its OpenAPI definitions.

Customer MessagingMarketing AutomationEmailCDPTransactional
Methods: http Schemes: 2 OAuth flows: API key in:

Security Schemes

basicAuth http
scheme: basic
bearerAuth http
scheme: bearer

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-11'
method: derived
source: openapi/customerio-openapi.yml
summary:
  types:
  - http
schemes:
- name: basicAuth
  type: http
  scheme: basic
  description: Track API auth. Base-64 encode site_id:api_key and pass it in the Authorization
    header (Basic ...).
  sources:
  - openapi/customerio-openapi.yml
- name: bearerAuth
  type: http
  scheme: bearer
  description: App API and Pipelines API auth. Pass the App API key (or Pipelines source write
    key) as a Bearer token in the Authorization header.
  sources:
  - openapi/customerio-openapi.yml