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

# Create an Outbound Call

> Create a single outbound call through the v1 outbound-calls API.

<Warning>
  **Legacy endpoint - deprecated.** Unversioned endpoints are scheduled for removal on **July 31, 2026**. A public v1 replacement is not currently listed in the v1 reference. This endpoint remains available for existing integrations until then.
</Warning>

Creates a single outbound call and queues it for processing. Use this endpoint when your application needs to call one recipient outside a batch campaign.

## When to use this

* **CRM click-to-call**: start a call from a lead or account record.
* **Form follow-up**: call a new inbound lead after submission.
* **Operational reminders**: trigger one appointment, payment, or verification call.

This endpoint uses the v1 resource path `/outbound-calls`. Legacy unversioned `/single-outbound-call` integrations can continue during the transition window, but new v1 integrations should use `/outbound-calls`.

## Related endpoints

* [List Calls](/docs/api-reference/v1/calls/list): review created call records.
* [Get Call](/docs/api-reference/v1/calls/get): fetch one call by ID.
* [Call Logs](/docs/api-reference/call-logs/list): inspect completed call evidence.


## OpenAPI

````yaml POST /calls/single
openapi: 3.0.0
info:
  title: DialNexa API
  description: >-
    Public REST API for the DialNexa voice AI platform. Versioned endpoints are
    under /v1; unversioned endpoints are legacy and deprecated.
  version: 1.0.0
servers:
  - url: https://api.dialnexa.com
    description: DialNexa production API
security:
  - bearer: []
tags:
  - name: API Keys
  - name: Agent Functions
  - name: Agents V1
  - name: Agents2
  - name: Batch Calls
  - name: Batch Calls V1
  - name: Call Logs
  - name: Calls
  - name: Calls V1
  - name: Campaign Leads
  - name: Campaigns
  - name: External Webhooks
  - name: Knowledge Base
  - name: Knowledge Base V1
  - name: LLMs
  - name: LLMs V1
  - name: Languages
  - name: Languages V1
  - name: Organization Phone Numbers
  - name: Organization Phone Numbers V1
  - name: Phone Number Pricing
  - name: Phone Number Pricing V1
  - name: Transcribers
  - name: Transcribers V1
  - name: User Webhooks
  - name: User Webhooks V1
  - name: V1
  - name: Voices
  - name: Voices V1
  - name: Webcall
  - name: Workflow Leads
  - name: Workflow Leads V1
  - name: Workflows
  - name: Workflows V1
paths:
  /calls/single:
    post:
      tags:
        - Calls
      summary: Make a single call
      description: >-
        **Legacy endpoint - deprecated, scheduled for removal on July 31,
        2026.** Use the `/v1` version for new integrations. 
      operationId: SingleCallController_makeCall
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MakeCallDto'
      responses:
        '201':
          description: The call has been successfully initiated.
        '400':
          description: Bad request - missing or invalid parameters.
        '401':
          description: Unauthorized.
        '404':
          description: Agent version not found.
        '500':
          description: Internal server error.
      deprecated: true
components:
  schemas:
    MakeCallDto:
      type: object
      properties:
        recipient_phone_number:
          type: string
          description: The phone number of the recipient
        from_phone_number:
          type: string
          description: The phone number to call from
        agent_id:
          type: string
          description: The ID of the agent version to use for the call
        agent_version_id:
          type: number
          description: The ID of the agent version to use for the call
        dynamic_variables:
          description: >-
            Dynamic variables to use in the call. Should be a JSON object with
            key-value pairs.
          type: array
          items:
            type: string
      required:
        - recipient_phone_number
        - from_phone_number
        - agent_id
        - agent_version_id
        - dynamic_variables
  securitySchemes:
    bearer:
      scheme: bearer
      bearerFormat: JWT
      type: http

````