Start a campaign

curl --request POST \
  --url https://api.vocobase.com/api/v2/campaigns/{id}/start \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "concurrency_limit": 6,
  "retry_concurrency": 2
}
'

import requests

url = "https://api.vocobase.com/api/v2/campaigns/{id}/start"

payload = {
    "concurrency_limit": 6,
    "retry_concurrency": 2
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({concurrency_limit: 6, retry_concurrency: 2})
};

fetch('https://api.vocobase.com/api/v2/campaigns/{id}/start', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.vocobase.com/api/v2/campaigns/{id}/start",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'concurrency_limit' => 6,
    'retry_concurrency' => 2
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.vocobase.com/api/v2/campaigns/{id}/start"

	payload := strings.NewReader("{\n  \"concurrency_limit\": 6,\n  \"retry_concurrency\": 2\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.vocobase.com/api/v2/campaigns/{id}/start")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"concurrency_limit\": 6,\n  \"retry_concurrency\": 2\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.vocobase.com/api/v2/campaigns/{id}/start")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"concurrency_limit\": 6,\n  \"retry_concurrency\": 2\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "data": {
    "campaign_id": "cmp_7f3a1b02-4d5e-4c11-9a88-2e6f0c4d1a90",
    "name": "March renewals",
    "description": "Outbound renewal reminders",
    "agent_id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "agent_name": "Renewals Agent",
    "provider": null,
    "type": "outbound",
    "phone_numbers": [
      {
        "phone_number_id": "pn_1c2d3e4f-5a6b-7c8d-9e0f-1a2b3c4d5e6f",
        "phone_number": "+918065480085"
      }
    ],
    "concurrency_limit": 10,
    "retry_concurrency": 3,
    "retry_count": 2,
    "cooldown_minutes": 60,
    "retry_delays_minutes": [
      30,
      240
    ],
    "callback_enabled": true,
    "status": "running",
    "total_contacts": 1420,
    "completed_count": 918,
    "failed_count": 61,
    "skipped_count": 4,
    "started_at": "2026-08-20T09:00:00.000Z",
    "paused_at": null,
    "completed_at": null,
    "created_at": "2026-08-19T16:41:00.000Z"
  }
}

{
  "success": false,
  "error": {
    "code": "INVALID_STATE",
    "message": "Can only start DRAFT campaigns"
  }
}

{
  "success": false,
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Invalid or missing API key"
  }
}

{
  "success": false,
  "error": {
    "code": "NOT_FOUND",
    "message": "Resource not found"
  }
}

{
  "success": false,
  "error": {
    "code": "RATE_LIMITED",
    "message": "Rate limit exceeded. Retry after 60 seconds."
  }
}

{
  "success": false,
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "An unexpected error occurred"
  }
}