AT&T

AT&T OAuth 2.0 API

AT&T OAuth 2.0 authentication API providing access tokens for all AT&T REST APIs. Supports Authorization Code, Client Credentials, and Refresh Token grant types. Scopes include ADS, MMS, SMS, SPEECH, STTC, and TTS.

Documentation GitHub OpenAPI

Operations 1

POST /oauth/v4/token Get AT&T OAuth Access Token #

Documentation

📖

Documentation

https://developer.att.com/oauth-2/docs

📖

Authentication

https://developer.att.com/oauth-2/docs

Specifications

⚙

OpenAPI

https://raw.githubusercontent.com/api-evangelist/att/refs/heads/main/openapi/att-oauth-api-openapi.yml

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OpenAPI Specification

openapi: 3.2.0
info:
  title: AT&T Wireless O Auth API
  description: Developer APIs for AT&T's wireless network capabilities including SMS messaging, MMS messaging, OAuth authentication, speech-to-text, text-to-speech, in-app messaging, and advertising APIs for consumer and business applications.
  version: 1.0.0
  contact:
    name: AT&T Developer Support
    url: https://developer.att.com/support
  termsOfService: https://www.att.com/gen/general?pid=11561
servers:
- url: https://api.att.com
  description: AT&T API Production Server
security:
- oauth2: []
tags:
- name: OAuth
  description: AT&T OAuth 2.0 authentication
paths:
  /oauth/v4/token:
    post:
      operationId: getAccessToken
      summary: Get AT&T OAuth Access Token
      description: Obtain an OAuth 2.0 access token for authenticating AT&T API requests.
      tags:
      - OAuth
      security: []
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/TokenRequest'
            examples:
              clientCredentials:
                summary: Client Credentials Grant
                value:
                  grant_type: client_credentials
                  client_id: your_client_id
                  client_secret: your_client_secret
                  scope: SMS
      responses:
        '200':
          description: Access token issued successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TokenResponse'
              examples:
                success:
                  summary: Successful Token Response
                  value:
                    access_token: eyJhbGciOiJSUzI1NiJ9.example
                    token_type: bearer
                    expires_in: 3600
                    scope: SMS
        '400':
          description: Invalid request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized - invalid client credentials
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    TokenResponse:
      type: object
      properties:
        access_token:
          type: string
          description: OAuth 2.0 access token
        token_type:
          type: string
          enum:
          - bearer
          description: Token type
        expires_in:
          type: integer
          description: Token expiration time in seconds
        refresh_token:
          type: string
          description: Refresh token for obtaining new access tokens
        scope:
          type: string
          description: Granted scopes
    TokenRequest:
      type: object
      required:
      - grant_type
      - client_id
      - client_secret
      - scope
      properties:
        grant_type:
          type: string
          enum:
          - client_credentials
          - authorization_code
          - refresh_token
          description: OAuth 2.0 grant type
        client_id:
          type: string
          description: AT&T Developer application client ID
        client_secret:
          type: string
          description: AT&T Developer application client secret
        scope:
          type: string
          description: Space-separated list of API scopes
        code:
          type: string
          description: Authorization code (for authorization_code grant)
        refresh_token:
          type: string
          description: Refresh token (for refresh_token grant)
    ErrorResponse:
      type: object
      properties:
        RequestError:
          type: object
          properties:
            ServiceException:
              type: object
              properties:
                MessageId:
                  type: string
                Text:
                  type: string
                Variables:
                  type: string
  securitySchemes:
    oauth2:
      type: oauth2
      flows:
        clientCredentials:
          tokenUrl: https://api.att.com/oauth/v4/token
          scopes:
            SMS: Access SMS messaging APIs
            MMS: Access MMS messaging APIs
            SPEECH: Access speech recognition APIs
            TTS: Access text-to-speech APIs
            ADS: Access advertising APIs