openapi: 3.0.1
info:
  title: Twilio - Accounts A2p Alpha Senders API
  description: This is the public Twilio REST API.
  termsOfService: https://www.twilio.com/legal/tos
  contact:
    name: Twilio Support
    url: https://support.twilio.com
    email: support@twilio.com
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
  version: 1.52.0
servers:
- url: https://accounts.twilio.com
tags:
- name: Alpha Senders
  description: Manage alphanumeric sender IDs
paths:
  /Services/{ServiceSid}/AlphaSenders:
    get:
      operationId: listAlphaSenders
      summary: Twilio List Alpha Senders in a Messaging Service
      tags:
      - Alpha Senders
      parameters:
      - $ref: '#/components/parameters/ServiceSid'
      responses:
        '200':
          description: List of alpha senders
          content:
            application/json:
              schema:
                type: object
                properties:
                  alpha_senders:
                    type: array
                    items:
                      $ref: '#/components/schemas/AlphaSender'
    post:
      operationId: addAlphaSender
      summary: Twilio Add an Alpha Sender to a Messaging Service
      tags:
      - Alpha Senders
      parameters:
      - $ref: '#/components/parameters/ServiceSid'
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
              - AlphaSender
              properties:
                AlphaSender:
                  type: string
                  description: Alphanumeric sender ID string (max 11 characters)
                  maxLength: 11
      responses:
        '201':
          description: Alpha sender added
        '400':
          description: Invalid request
components:
  parameters:
    ServiceSid:
      name: ServiceSid
      in: path
      required: true
      description: The unique identifier of the messaging service
      schema:
        type: string
        pattern: ^MG[0-9a-fA-F]{32}$
  schemas:
    AlphaSender:
      type: object
      properties:
        sid:
          type: string
          pattern: ^AI[0-9a-fA-F]{32}$
        alpha_sender:
          type: string
          description: Alphanumeric sender ID
        capabilities:
          type: array
          items:
            type: string
        date_created:
          type: string
          format: date-time
  securitySchemes:
    accountSid_authToken:
      type: http
      scheme: basic
x-maturity:
- name: GA
  description: This product is Generally Available.
- name: Beta
  description: PLEASE NOTE that this is a Beta product that is subject to change. Use it with caution.