> ## Documentation Index
> Fetch the complete documentation index at: https://docs.open.cx/llms.txt
> Use this file to discover all available pages before exploring further.

> Initiate an outbound call using an AI phone agent. Use when orchestrating voice calls programmatically — placing outbound calls or listing call history.

# Make an AI phone call



## OpenAPI

````yaml post /phone/outbound-call
openapi: 3.1.0
info:
  title: OpenCX API
  description: >

    OpenCX is an AI-powered, all-in-one platform for customer support and
    outbound communications.


    Use this API to manage your OpenCX organization's AI agents, actions,
    conversations, contacts, and more.


    To get started, generate a new API key from the dashboard.


    ## Authentication

    All API endpoints require authentication using a Bearer token. You can
    generate an API key from your OpenCX dashboard.


    ## Rate Limiting

    API requests are rate limited to ensure fair usage. The current limits are:

    - 100 requests per minute for standard endpoints

    - 1000 requests per minute for streaming endpoints


    ## Error Handling

    The API uses standard HTTP status codes and returns detailed error messages
    in the response body.
  version: 1.0-beta
  license:
    name: MIT
    url: https://opensource.org/licenses/MIT
servers:
  - url: https://api.open.cx
    description: Production
security:
  - bearerAuth: []
paths:
  /phone/outbound-call:
    post:
      summary: Make an AI phone call
      description: >-
        Initiate an outbound call using an AI phone agent. You can target either
        an existing contact by ID or a raw phone number in E.164 format.
      operationId: makeOutboundCall
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MakeOutboundCallDto'
      responses:
        '200':
          description: Default Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MakeOutboundCallResponseDto'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorDto'
components:
  schemas:
    MakeOutboundCallDto:
      $schema: https://json-schema.org/draft/2020-12/schema
      $id: '#/components/schemas/MakeOutboundCallDtoInput'
      type: object
      properties:
        phoneAgentId:
          type: string
        contact:
          anyOf:
            - type: object
              properties:
                id:
                  type: string
              required:
                - id
            - type: object
              properties:
                phoneNumber:
                  type: string
              required:
                - phoneNumber
      required:
        - phoneAgentId
        - contact
    MakeOutboundCallResponseDto:
      $schema: https://json-schema.org/draft/2020-12/schema
      $id: '#/components/schemas/MakeOutboundCallResponseDto'
      type: object
      properties:
        error:
          description: Error details if the call failed
          type: object
          properties:
            code:
              type: string
            status:
              type: number
          additionalProperties: false
        result:
          description: Call result from the provider
      additionalProperties: false
    ErrorDto:
      type: object
      properties:
        statusCode:
          type: integer
        message:
          type: string
        error:
          type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT

````