openapi: 3.1.0
info:
  contact:
    email: support@telnyx.com
  description: Telnyx provides global communications and connectivity APIs for developers — including SIP trunking, programmable voice, SMS, MMS, WhatsApp Business Messaging, Call Control, Fax, Wireless (IoT & eSIM), Phone Numbers (DID provisioning & porting), Emergency Services, and Network APIs for private interconnects and edge connectivity. Build, scale, and manage voice, messaging, and data networks with Telnyx's carrier-grade global infrastructure and API-first platform.
  title: Telnyx Access Tokens numbers features API
  version: 2.0.0
  x-endpoint-cost: light
servers:
- description: Version 2.0.0 of the Telnyx API
  url: https://api.telnyx.com/v2
security:
- bearerAuth: []
tags:
- name: numbers features
paths:
  /numbers_features:
    post:
      description: Retrieve the features for a list of numbers
      operationId: PostNumbersFeatures
      requestBody:
        content:
          application/json:
            schema:
              properties:
                phone_numbers:
                  items:
                    type: string
                  type: array
              required:
              - phone_numbers
              type: object
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                properties:
                  data:
                    items:
                      properties:
                        features:
                          items:
                            type: string
                          type: array
                        phone_number:
                          type: string
                      required:
                      - phone_number
                      - features
                      type: object
                    type: array
                type: object
          description: Successful response
        '400':
          $ref: '#/components/responses/numbers_BadRequestResponse'
        '401':
          $ref: '#/components/responses/numbers_UnauthorizedResponse'
        '422':
          $ref: '#/components/responses/numbers_UnprocessableEntity'
        '500':
          $ref: '#/components/responses/numbers_GenericErrorResponse'
      security:
      - bearerAuth: []
      summary: Retrieve the features for a list of numbers
      tags:
      - numbers features
      x-latency-category: responsive
components:
  responses:
    numbers_UnauthorizedResponse:
      content:
        application/json:
          examples:
            Authentication Failed:
              value:
                errors:
                - code: '10009'
                  detail: Could not understand the provided credentials.
                  meta:
                    url: https://developers.telnyx.com/docs/overview/errors/10009
                  title: Authentication failed
          schema:
            $ref: '#/components/schemas/numbers_Errors'
      description: Unauthorized
    numbers_UnprocessableEntity:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/numbers_Errors'
      description: Unprocessable entity. Check the 'detail' field in response for details.
    numbers_GenericErrorResponse:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/numbers_Errors'
      description: Unexpected error
    numbers_BadRequestResponse:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/numbers_Errors'
      description: Bad request, the request was unacceptable, often due to missing a required parameter.
  schemas:
    numbers_Errors:
      properties:
        errors:
          items:
            $ref: '#/components/schemas/numbers_Error'
          type: array
      type: object
    numbers_Error:
      properties:
        code:
          example: '10007'
          type: string
        detail:
          example: An unexpected error occured.
          type: string
        meta:
          properties:
            url:
              description: URL with additional information on the error.
              example: https://developers.telnyx.com/docs/overview/errors/10015
              type: string
          type: object
        source:
          properties:
            parameter:
              description: Indicates which query parameter caused the error.
              type: string
            pointer:
              description: JSON pointer (RFC6901) to the offending entity.
              example: /base
              type: string
          type: object
        title:
          example: Unexpected error
          type: string
      type: object
  securitySchemes:
    bearerAuth:
      scheme: bearer
      type: http
    branded-calling_bearerAuth:
      description: API key passed as a Bearer token in the Authorization header
      scheme: bearer
      type: http
    oauthClientAuth:
      description: OAuth 2.0 authentication for Telnyx API and MCP integrations
      flows:
        authorizationCode:
          authorizationUrl: https://api.telnyx.com/v2/oauth/authorize
          refreshUrl: https://api.telnyx.com/v2/oauth/token
          scopes:
            admin: Administrative access to Telnyx resources
          tokenUrl: https://api.telnyx.com/v2/oauth/token
        clientCredentials:
          scopes:
            admin: Administrative access to Telnyx resources
          tokenUrl: https://api.telnyx.com/v2/oauth/token
      type: oauth2
    outbound-voice-profiles_bearerAuth:
      bearerFormat: JWT
      scheme: bearer
      type: http
    pronunciation-dicts_bearerAuth:
      description: Telnyx API v2 key. Obtain from https://portal.telnyx.com
      scheme: bearer
      type: http
    stored-payment-transactions_bearerAuth:
      bearerFormat: JWT
      scheme: bearer
      type: http