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

# Start Campaign

> Starts a paused or draft campaign

## Overview

Starts a paused or draft campaign. The campaign must have at least one LinkedIn account and one lead to be started.

## Requirements

Before starting a campaign, ensure:

* At least one LinkedIn account is connected
* At least one lead has been added
* Campaign is in `paused` or `draft` status

## Response

Returns a success message when the campaign is started successfully. The campaign status will change to `active` and lead processing will begin.


## OpenAPI

````yaml PUT /v1/campaigns/{campaignId}/start
openapi: 3.1.0
info:
  title: WaLead API
  description: >-
    WaLead Public API for managing LinkedIn outreach campaigns, leads, and
    analytics
  version: 1.0.0
  contact:
    name: WaLead Support
    url: https://walead.ai
servers:
  - url: https://app-api.walead.ai/api
    description: Production server
security:
  - apiKeyAuth: []
paths:
  /v1/campaigns/{campaignId}/start:
    put:
      summary: Start Campaign
      description: Starts a paused or draft campaign
      parameters:
        - name: campaignId
          in: path
          description: Campaign ID
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Campaign started successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  message:
                    type: string
                    example: Campaign started
        '400':
          description: >-
            Bad request - Campaign cannot be started (missing LinkedIn account
            or leads)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized - Invalid API Key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Campaign not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      required:
        - statusCode
        - message
      properties:
        statusCode:
          type: integer
          description: HTTP status code
        message:
          type: string
          description: Error message
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: API key for authentication. Generate from your WaLead dashboard.

````