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

# Launch a prepared campaign

> Launch a campaign you've already prepared in the dashboard. Takes the prepared campaign id (not a run id); it launches what's already set up.



## OpenAPI

````yaml /api-reference/openapi.json post /campaigns/{id}/send
openapi: 3.0.3
info:
  title: Onchain Suite API
  version: 1.0.0
  description: >-
    The server-to-server API. Authenticate with a secret (`sk_`) key and call
    these endpoints from your backend to register contacts, send events, message
    users, ingest consented captures, and feed automations. Secret keys are
    server-only: never ship one to a browser, a mobile app, or a public repo.
servers:
  - url: https://api.onchainsuite.com/api/v1
    description: Production
security:
  - secretKey: []
tags:
  - name: Contacts
    description: Register and list contacts.
  - name: Events
    description: Send product events that drive automations and segments.
  - name: Messaging
    description: Send in-app pushes and launch campaigns.
  - name: Forms
    description: Ingest consented captures from your backend.
  - name: Automation
    description: Feed trigger events into the automation runtime.
paths:
  /campaigns/{id}/send:
    post:
      tags:
        - Messaging
      summary: Launch a prepared campaign
      description: >-
        Launch a campaign you've already prepared in the dashboard. Takes the
        prepared campaign id (not a run id); it launches what's already set up.
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The prepared campaign id.
      responses:
        '200':
          description: Launched.
          content:
            application/json:
              schema:
                type: object
                properties:
                  ok:
                    type: boolean
                  campaignRunId:
                    type: string
        '404':
          description: Campaign not found in this workspace.
components:
  securitySchemes:
    secretKey:
      type: http
      scheme: bearer
      description: >-
        Your secret key, for example `sk_live_...`. Send it as `Authorization:
        Bearer sk_live_...`. A `sk_test_...` key runs in test mode.

````

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