// Headers
const headers = {
  authorization: "YOUR-API-KEY-HERE",
};

// Data
const data = {
  base_prompt:
    "You are calling {{business}} to renew their subscription to {{service}} before it expires on {{date}}.",
  call_data: [
    {
      phone_number: "1234567890",
      business: "ABC co.",
      service: "Netflix",
      date: "September 4th",
    },
    {
      phone_number: "32176540987",
      business: "XYZ inc.",
      service: "Window Cleaning",
      date: "December 20th",
    },
  ],
  label: "Renewal Reminder - Wednesday Afternoon with female voice",
  voice_id: 0,
  max_duration: 10,
  reduce_latency: true,
  wait_for_greeting: true,
};

// API request
await axios.post("https://api.bland.ai/v1/batches", data, { headers });

​
Step 1: Setup Your Authorization

To initiate a batch call, you must first authenticate your request. Ensure you have your API key from signing up on the developer portal.

​
Step 2: Create the Base Prompt

Craft a base prompt that will be common across all calls in the batch. Use placeholders {{curly braces}} for dynamic content. Example: 
"You are calling {{business}} to renew their subscription to {{service}} before it expires on {{date}}.";

​
Step 3: Define the Call Data

Specify the list of calls in the call_data array. Each call must have a phone_number and can include other properties corresponding to placeholders in your base prompt. Example: 
[
  {
    phone_number: "1234567890",
    business: "ABC co.",
    service: "Netflix",
    date: "September 4th",
  },
  {
    phone_number: "32176540987",
    business: "XYZ inc.",
    service: "Window Cleaning",
    date: "December 20th",
  },
];

​
Step 4: Additional Configuration

  • label: Assign a label to your batch for easy tracking.
  • campaign_id: Organize related batches under a campaign.
  • test_mode: Set to true for testing with the first call only.
  • batch_id: Manually set or auto-generated for tracking.
  • Voice and Language Settings: Select voice_id, reduce_latency, and language.
  • request_data: Include specific facts for the AI to know during the call.
  • webook: For real-time notifications and transcripts post-call.
  • max_duration: Define the maximum length of each call.
  • ivr_mode: Enable for navigating phone trees or leaving voicemails.
  • wait_for_greeting: Control if the AI speaks immediately or waits.

​
Step 5: Send the API Request

Use the provided JavaScript or Python code snippet to make the API request.

​
Step 6: Handle the Response

After sending the batch request, you’ll receive a response with a message and the batch_id. Monitor the progress of your calls and any responses via your specified webhook. Here’s what an example response might look like: 
{
  "message": "success",
  "batch_id": "3p$7rQ3p9sT5bzmF-gen-batch"
}

​
Step 7: Monitoring and Analytics

Track the performance and outcomes of your batch calls through the provided batch_id and campaign analytics. Adjust future batches based on the insights gained. 
// Headers
const headers = {
  authorization: "YOUR-API-KEY-HERE",
};

// Data
const data = {
  base_prompt:
    "You are calling {{business}} to renew their subscription to {{service}} before it expires on {{date}}.",
  call_data: [
    {
      phone_number: "1234567890",
      business: "ABC co.",
      service: "Netflix",
      date: "September 4th",
    },
    {
      phone_number: "32176540987",
      business: "XYZ inc.",
      service: "Window Cleaning",
      date: "December 20th",
    },
  ],
  label: "Renewal Reminder - Wednesday Afternoon with female voice",
  voice_id: 0,
  max_duration: 10,
  reduce_latency: true,
  wait_for_greeting: true,
};

// API request
await axios.post("https://api.bland.ai/v1/batches", data, { headers });