generated: '2026-07-11'
method: derived
source: openapi/at-and-t-in-app-messaging-api.yaml, openapi/at-and-t-mvnx-api.yaml, openapi/at-and-t-sms-api.yaml
summary:
  types:
  - apiKey
  - oauth2
  api_key_in:
  - header
  oauth2_flows:
  - authorizationCode
  - clientCredentials
schemes:
- name: oauth2
  type: oauth2
  flows:
  - flow: authorizationCode
    authorizationUrl: https://api.att.com/oauth/v4/authorize
    tokenUrl: https://api.att.com/oauth/v4/token
    scopes: 2
  description: AT&T OAuth 2.0 with user consent via authorization code flow
  sources:
  - openapi/at-and-t-in-app-messaging-api.yaml
- name: clientId
  type: apiKey
  in: header
  parameter: X-Client-Id
  description: Client ID enforcement policy for MVNX API authentication
  sources:
  - openapi/at-and-t-mvnx-api.yaml
- name: oauth2
  type: oauth2
  flows:
  - flow: clientCredentials
    tokenUrl: https://api.att.com/oauth/v4/token
    scopes: 6
  description: AT&T OAuth 2.0 authentication using client credentials grant
  sources:
  - openapi/at-and-t-sms-api.yaml