openapi: 3.1.0
info:
  title: Telstra Messaging Authentication MMS API
  description: 'The Telstra Messaging API provides programmatic SMS and MMS messaging

    services in Australia and select international destinations. Built on

    the Telstra mobile network, the API supports outbound and inbound

    SMS/MMS, delivery status callbacks, virtual numbers, and provisioning

    workflows. Authentication uses OAuth 2.0 client credentials with the

    NSMS scope.

    '
  version: 2.2.10
  contact:
    name: Telstra Developer Support
    url: https://dev.telstra.com
  termsOfService: https://www.telstra.com.au/business-enterprise/legal/messaging-api-terms-of-service
  license:
    name: Telstra Developer License
    url: https://github.com/telstra/tdev-doc-license
  x-logo:
    url: https://www.telstra.com.au/etc/designs/telstrav8/clientlibs/img/Telstra_Symbol.svg
servers:
- url: https://tapi.telstra.com/v2
  description: Production Server
security:
- OAuth2ClientCredentials:
  - NSMS
tags:
- name: MMS
  description: Send, retrieve, and check status of MMS messages.
paths:
  /messages/mms:
    post:
      summary: Telstra Send MMS
      description: Send an MMS containing one or more multimedia parts (image, audio, video, vCard, or text) to a destination number.
      operationId: sendMms
      tags:
      - MMS
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SendMmsRequest'
      responses:
        '201':
          description: MMS accepted for delivery.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SendMessageResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '413':
          description: Payload too large.
        '429':
          $ref: '#/components/responses/RateLimited'
    get:
      summary: Telstra Get MMS Replies
      description: Retrieve queued inbound MMS replies for the authenticated dedicated virtual number.
      operationId: getMmsReplies
      tags:
      - MMS
      responses:
        '200':
          description: Inbound MMS payload (empty if no replies queued).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/InboundMessage'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /messages/mms/{messageId}/status:
    get:
      summary: Telstra Get MMS Status
      description: Retrieve the current delivery status for a previously sent MMS by message ID.
      operationId: getMmsStatus
      tags:
      - MMS
      parameters:
      - name: messageId
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Current delivery status.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageStatus'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  schemas:
    MessageReceipt:
      type: object
      required:
      - to
      - deliveryStatus
      - messageId
      properties:
        to:
          type: string
        deliveryStatus:
          type: string
          enum:
          - MessageWaiting
          - DeliveredToNetwork
          - MessageBuffered
          - DeliveredToTerminal
          - DeliveryImpossible
          - Rejected
        messageId:
          type: string
        messageStatusURL:
          type: string
          format: uri
    InboundMessage:
      type: object
      properties:
        status:
          type: string
          enum:
          - EMPTY
          - RECEIVED
        destinationAddress:
          type: string
        senderAddress:
          type: string
        message:
          type: string
        messageId:
          type: string
        sentTimestamp:
          type: string
          format: date-time
        apiMsgId:
          type: string
    SendMessageResponse:
      type: object
      required:
      - messages
      properties:
        messages:
          type: array
          items:
            $ref: '#/components/schemas/MessageReceipt'
        country:
          type: array
          items:
            type: object
        messageType:
          type: string
        numberSegments:
          type: integer
        numberNationalDestinations:
          type: integer
        numberInternationalDestinations:
          type: integer
    ErrorResponse:
      type: object
      required:
      - status
      - code
      - message
      properties:
        status:
          type: string
        code:
          type: string
        message:
          type: string
    MmsContentPart:
      type: object
      required:
      - type
      - payload
      properties:
        type:
          type: string
          description: MIME type (image/jpeg, image/png, image/gif, audio/amr, text/plain, application/smil).
        filename:
          type: string
        payload:
          type: string
          format: byte
          description: Base64-encoded content payload.
    MessageStatus:
      type: object
      required:
      - to
      - sentTimestamp
      - status
      properties:
        to:
          type: string
        sentTimestamp:
          type: string
          format: date-time
        receivedTimestamp:
          type: string
          format: date-time
        status:
          type: string
          enum:
          - MessageWaiting
          - DeliveredToNetwork
          - MessageBuffered
          - DeliveredToTerminal
          - DeliveryImpossible
          - Rejected
    SendMmsRequest:
      type: object
      required:
      - to
      - subject
      - MMSContent
      properties:
        to:
          type: string
          description: Destination MSISDN in E.164 format.
        subject:
          type: string
          description: MMS subject line (max 64 chars).
          maxLength: 64
        from:
          type: string
        notifyURL:
          type: string
          format: uri
        replyRequest:
          type: boolean
        priority:
          type: boolean
        MMSContent:
          type: array
          description: One or more MMS content parts; base64 encoded payloads.
          items:
            $ref: '#/components/schemas/MmsContentPart'
  responses:
    NotFound:
      description: Not Found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    RateLimited:
      description: Too Many Requests.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    BadRequest:
      description: Bad Request.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    Unauthorized:
      description: Unauthorized.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    OAuth2ClientCredentials:
      type: oauth2
      description: OAuth 2.0 client credentials grant against https://tapi.telstra.com/v2/oauth/token with the NSMS scope.
      flows:
        clientCredentials:
          tokenUrl: https://tapi.telstra.com/v2/oauth/token
          scopes:
            NSMS: Send and receive SMS/MMS through Telstra Messaging.