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 FQDNs 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:
- description: FQDN operations
  name: FQDNs
paths:
  /fqdns:
    get:
      description: Get all FQDNs belonging to the user that match the given filters.
      operationId: ListFqdns
      parameters:
      - $ref: '#/components/parameters/connections_PageConsolidated'
      - description: 'Consolidated filter parameter (deepObject style). Originally: filter[connection_id], filter[fqdn], filter[port], filter[dns_record_type]'
        explode: true
        in: query
        name: filter
        schema:
          properties:
            connection_id:
              description: ID of the FQDN connection to which the FQDN belongs.
              type: string
            dns_record_type:
              description: DNS record type used by the FQDN.
              example: a
              type: string
            fqdn:
              description: FQDN represented by the resource.
              example: example.com
              type: string
            port:
              description: Port to use when connecting to the FQDN.
              example: 5060
              type: integer
          type: object
        style: deepObject
      responses:
        '200':
          $ref: '#/components/responses/ListFqdnsResponse'
        '400':
          $ref: '#/components/responses/connections_BadRequestResponse'
        '401':
          $ref: '#/components/responses/UnauthenticatedResponse'
      summary: List FQDNs
      tags:
      - FQDNs
      x-endpoint-cost: medium
      x-group-parameters: 'true'
      x-latency-category: responsive
    post:
      description: Create a new FQDN object.
      operationId: CreateFqdn
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateFqdnRequest'
      responses:
        '201':
          $ref: '#/components/responses/FqdnResponse'
        '401':
          $ref: '#/components/responses/UnauthenticatedResponse'
        '403':
          $ref: '#/components/responses/connections_UnauthorizedResponse'
        '422':
          $ref: '#/components/responses/connections_UnprocessableEntityResponse'
      summary: Create an FQDN
      tags:
      - FQDNs
      x-endpoint-cost: medium
      x-latency-category: responsive
  /fqdns/{id}:
    delete:
      description: Delete an FQDN.
      operationId: DeleteFqdn
      parameters:
      - $ref: '#/components/parameters/FqdnId'
      responses:
        '200':
          $ref: '#/components/responses/FqdnResponse'
        '400':
          $ref: '#/components/responses/connections_BadRequestResponse'
        '401':
          $ref: '#/components/responses/UnauthenticatedResponse'
        '403':
          $ref: '#/components/responses/connections_UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/connections_NotFoundResponse'
      summary: Delete an FQDN
      tags:
      - FQDNs
      x-latency-category: responsive
    get:
      description: Return the details regarding a specific FQDN.
      operationId: RetrieveFqdn
      parameters:
      - $ref: '#/components/parameters/FqdnId'
      responses:
        '200':
          $ref: '#/components/responses/FqdnResponse'
        '400':
          $ref: '#/components/responses/connections_BadRequestResponse'
        '401':
          $ref: '#/components/responses/UnauthenticatedResponse'
        '403':
          $ref: '#/components/responses/connections_UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/connections_NotFoundResponse'
      summary: Retrieve an FQDN
      tags:
      - FQDNs
      x-latency-category: responsive
    patch:
      description: Update the details of a specific FQDN.
      operationId: UpdateFqdn
      parameters:
      - $ref: '#/components/parameters/FqdnId'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateFqdnRequest'
      responses:
        '200':
          $ref: '#/components/responses/FqdnResponse'
        '401':
          $ref: '#/components/responses/UnauthenticatedResponse'
        '403':
          $ref: '#/components/responses/connections_UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/connections_NotFoundResponse'
        '422':
          $ref: '#/components/responses/connections_UnprocessableEntityResponse'
      summary: Update an FQDN
      tags:
      - FQDNs
      x-latency-category: responsive
components:
  responses:
    connections_BadRequestResponse:
      content:
        application/json:
          examples:
            missingParameter:
              value:
                errors:
                - code: '10015'
                  detail: The request failed because it was not well-formed.
                  meta:
                    url: https://developers.telnyx.com/docs/overview/errors/10015
                  source:
                    pointer: /
                  title: Bad Request
          schema:
            $ref: '#/components/schemas/ErrorResponse'
      description: Bad request, the request was unacceptable, often due to missing a required parameter.
    FqdnResponse:
      content:
        application/json:
          schema:
            properties:
              data:
                $ref: '#/components/schemas/Fqdn'
            title: FQDN Response
            type: object
      description: Successful response with details about an FQDN connection.
    connections_NotFoundResponse:
      content:
        application/json:
          examples:
            notFound:
              value:
                errors:
                - code: '10005'
                  detail: The requested resource or URL could not be found.
                  meta:
                    url: https://developers.telnyx.com/docs/overview/errors/10005
                  source:
                    pointer: /
                  title: Resource not found
          schema:
            $ref: '#/components/schemas/ErrorResponse'
      description: The requested resource doesn't exist.
    connections_UnauthorizedResponse:
      content:
        application/json:
          examples:
            notAuthorized:
              value:
                errors:
                - code: '10010'
                  detail: You are not authorized to access the requested resource.
                  meta:
                    url: https://developers.telnyx.com/docs/overview/errors/10010
                  source:
                    pointer: /
                  title: Not authorized
          schema:
            $ref: '#/components/schemas/ErrorResponse'
      description: The user doesn't have the required permissions to perform the requested action.
    ListFqdnsResponse:
      content:
        application/json:
          schema:
            properties:
              data:
                items:
                  $ref: '#/components/schemas/Fqdn'
                type: array
              meta:
                $ref: '#/components/schemas/connections_PaginationMeta'
            title: List FQDNs Response
            type: object
      description: Successful response with a list of FQDN connections.
    UnauthenticatedResponse:
      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/ErrorResponse'
      description: Unauthorized
    connections_UnprocessableEntityResponse:
      content:
        application/json:
          examples:
            unprocessableEntity:
              value:
                errors:
                - code: '10015'
                  detail: 'Invalid dnis_format: test, was provided. Acceptable formats are +e164, e164, national, sip_username'
                  meta:
                    url: https://developers.telnyx.com/docs/overview/errors/10015
                  source:
                    pointer: /inbound/dnis_number_format
                  title: Bad Request
          schema:
            $ref: '#/components/schemas/ErrorResponse'
      description: The request was well-formed but was unable to be followed due to semantic errors.
  schemas:
    Fqdn:
      example:
        connection_id: '1516447646313612565'
        created_at: '2018-02-02T22:25:27.521Z'
        dns_record_type: a
        fqdn: example.com
        id: '1293384261075731499'
        port: 5060
        record_type: fqdn
        updated_at: '2018-02-02T22:25:27.521Z'
      properties:
        connection_id:
          description: ID of the FQDN connection to which this FQDN is attached.
          type: string
        created_at:
          description: ISO 8601 formatted date indicating when the resource was created.
          example: '2018-02-02T22:25:27.521Z'
          type: string
        dns_record_type:
          description: The DNS record type for the FQDN. For cases where a port is not set, the DNS record type must be 'srv'. For cases where a port is set, the DNS record type must be 'a'. If the DNS record type is 'a' and a port is not specified, 5060 will be used.
          example: a
          type: string
        fqdn:
          description: FQDN represented by this resource.
          example: example.com
          type: string
        id:
          description: Identifies the resource.
          example: '1293384261075731499'
          type: string
          x-format: int64
        port:
          default: 5060
          description: Port to use when connecting to this FQDN.
          example: 5060
          type: integer
        record_type:
          description: Identifies the type of the resource.
          example: fqdn
          type: string
        updated_at:
          description: ISO 8601 formatted date indicating when the resource was updated.
          example: '2018-02-02T22:25:27.521Z'
          type: string
      title: Fqdn
      type: object
    CreateFqdnRequest:
      example:
        connection_id: '1516447646313612565'
        dns_record_type: a
        fqdn: example.com
        port: 8080
      properties:
        connection_id:
          description: ID of the FQDN connection to which this IP should be attached.
          type: string
        dns_record_type:
          description: The DNS record type for the FQDN. For cases where a port is not set, the DNS record type must be 'srv'. For cases where a port is set, the DNS record type must be 'a'. If the DNS record type is 'a' and a port is not specified, 5060 will be used.
          example: a
          type: string
        fqdn:
          description: FQDN represented by this resource.
          example: example.com
          type: string
        port:
          default: 5060
          description: Port to use when connecting to this FQDN.
          example: 5060
          type:
          - integer
          - 'null'
      required:
      - fqdn
      - dns_record_type
      - connection_id
      title: Create Fqdn Request
      type: object
    ErrorResponse:
      properties:
        errors:
          items:
            properties:
              code:
                type: string
              detail:
                type: string
              meta:
                properties:
                  url:
                    format: uri
                    type: string
                type: object
              source:
                properties:
                  pointer:
                    type: string
                type: object
              title:
                type: string
            type: object
          type: array
      type: object
    UpdateFqdnRequest:
      example:
        connection_id: '1516447646313612565'
        dns_record_type: a
        fqdn: example.com
        port: 8080
      properties:
        connection_id:
          description: ID of the FQDN connection to which this IP should be attached.
          type: string
        dns_record_type:
          description: The DNS record type for the FQDN. For cases where a port is not set, the DNS record type must be 'srv'. For cases where a port is set, the DNS record type must be 'a'. If the DNS record type is 'a' and a port is not specified, 5060 will be used.
          example: a
          type: string
        fqdn:
          description: FQDN represented by this resource.
          example: example.com
          type: string
        port:
          default: 5060
          description: Port to use when connecting to this FQDN.
          example: 5060
          type:
          - integer
          - 'null'
      title: Update FQDN Request
      type: object
    connections_PaginationMeta:
      properties:
        page_number:
          example: 2
          type: integer
        page_size:
          example: 25
          type: integer
        total_pages:
          example: 3
          type: integer
        total_results:
          example: 55
          type: integer
      title: Pagination Meta
      type: object
  parameters:
    FqdnId:
      description: Identifies the resource.
      in: path
      name: id
      required: true
      schema:
        example: '1517907029795014409'
        type: string
        x-format: int64
    connections_PageConsolidated:
      description: 'Consolidated page parameter (deepObject style). Originally: page[size], page[number]'
      explode: true
      in: query
      name: page
      schema:
        properties:
          number:
            default: 1
            description: The page number to load
            minimum: 1
            type: integer
          size:
            default: 250
            description: The size of the page
            maximum: 250
            minimum: 1
            type: integer
        type: object
      style: deepObject
  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