> ## Documentation Index
> Fetch the complete documentation index at: https://kapso-1adbad2d.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Trigger broadcast send

> Transition a draft broadcast with recipients into sending status.

**Requirements:**
- Broadcast must be in draft status
- Broadcast must have at least one recipient

The broadcast job is enqueued server-side and processes asynchronously.
Use GET /whatsapp_broadcasts/{broadcast_id} to poll progress.




## OpenAPI

````yaml api/legacy/openapi-platform.yaml post /whatsapp_broadcasts/{broadcast_id}/send
openapi: 3.0.3
info:
  title: Kapso Platform API
  description: >-
    Build WhatsApp automation into your SaaS. Let your customers connect their
    own WhatsApp Business accounts.
  version: 1.0.0
  contact:
    name: Kapso Support
servers:
  - url: https://app.kapso.ai/api/v1
    description: Production server
security:
  - ApiKeyAuth: []
paths:
  /whatsapp_broadcasts/{broadcast_id}/send:
    post:
      tags:
        - WhatsApp Broadcasts
      summary: Trigger broadcast send
      description: |
        Transition a draft broadcast with recipients into sending status.

        **Requirements:**
        - Broadcast must be in draft status
        - Broadcast must have at least one recipient

        The broadcast job is enqueued server-side and processes asynchronously.
        Use GET /whatsapp_broadcasts/{broadcast_id} to poll progress.
      operationId: sendWhatsappBroadcast
      parameters:
        - name: broadcast_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
      responses:
        '202':
          description: Broadcast send triggered successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: object
                    properties:
                      id:
                        type: string
                        format: uuid
                        example: 5f6a7b8c-9d0e-1f2a-3b4c-5d6e7f8a9b0c
                      status:
                        type: string
                        enum:
                          - sending
                        example: sending
                      started_at:
                        type: string
                        format: date-time
                        example: '2025-10-12T17:03:21Z'
              examples:
                accepted:
                  summary: Send triggered
                  value:
                    data:
                      id: 5f6a7b8c-9d0e-1f2a-3b4c-5d6e7f8a9b0c
                      status: sending
                      started_at: '2025-10-12T17:03:21Z'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Broadcast not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '422':
          description: Validation error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              examples:
                already_sending:
                  summary: Broadcast already sending
                  value:
                    error: Broadcast is already sending
                no_recipients:
                  summary: No recipients
                  value:
                    error: Broadcast has no recipients
                already_completed:
                  summary: Already completed
                  value:
                    error: Broadcast already completed
components:
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
          example: Resource not found
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: Your project API key

````