Send a Template Broadcast

Use this endpoint to send one approved template from an organization-owned WhatsApp number to a recipient list. Small broadcasts are queued immediately; larger broadcasts return a job that you can monitor.

Endpoint

POST /broadcast/public/send-template-broadcast

Rate limit: 10 requests per minute for each API key and fromPhoneNumber combination.

Headers

Header	Required	Description
`x-api-key`	Required	Organization auth key
`Content-Type`	Required	`application/json`
`Idempotency-Key`	Recommended	A unique value that identifies this broadcast request

Create one Idempotency-Key for a logical broadcast and reuse it only when retrying that same request. Use a new key for the next broadcast.

Request body

Field	Type	Required	Description
`broadcastName`	string	Required	Campaign label used in broadcast reporting
`fromPhoneNumber`	string	Required	A sender from Get Phone Numbers
`templateName`	string	Required	Name of an approved template
`templateLanguage`	string	Required	Template language code, such as `en`
`templateType`	string	Required	Template category, such as `MARKETING` or `UTILITY`
`templateId`	string	Optional	WhatsApp template identifier
`globalTemplateParams`	string[]	Optional	Default placeholder values for recipients without their own values
`data`	object[]	Required	Between 1 and 10,000 recipient objects

Recipient object

Field	Type	Required	Description
`countryCode`	string	Required	Country calling code as digits without `+`, such as `91`
`toPhoneNumber`	string	Required	Local recipient number as digits without the country code
`templateParams`	string[]	Optional	Recipient-specific placeholder values; these override the global values

Request example

curl -X POST "https://cerberus.eazybe.com/prod/api/v2/broadcast/public/send-template-broadcast" \
  -H "x-api-key: $API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: festive-run-1" \
  -d '{
    "broadcastName": "Festive Offer Campaign",
    "fromPhoneNumber": "14844634680",
    "templateName": "eazybe_temp",
    "templateLanguage": "en",
    "templateType": "MARKETING",
    "templateId": "1530766784804741",
    "globalTemplateParams": ["Valued customer", "FESTIVE10"],
    "data": [
      {
        "countryCode": "91",
        "toPhoneNumber": "9675360316",
        "templateParams": ["Vineet", "VIP20"]
      },
      {
        "countryCode": "91",
        "toPhoneNumber": "8077378155"
      }
    ]
  }'

The first recipient uses templateParams. The second recipient has no recipient-specific values, so the API uses globalTemplateParams.

Responses by broadcast size

Up to 1,000 recipients

The API queues the broadcast and returns 200.

{
  "status": true,
  "status_code": 200,
  "message": "Bulk broadcast queued successfully",
  "data": {}
}

These broadcasts do not return a jobId, so there is no background job to poll.

1,001 to 10,000 recipients

The API accepts the request with 202, divides it into chunks of 1,000 recipients, and returns a jobId.

{
  "status": true,
  "status_code": 202,
  "message": "Broadcast accepted for background processing",
  "data": {
    "jobId": "pub_4f8c2a1e9b7d43c6a5e0f2b18d3c9a67",
    "status": "PROCESSING",
    "totalRecipients": 1001,
    "chunkSize": 1000,
    "totalChunks": 2
  }
}

Save jobId, then get the broadcast status.

Validation behavior

data must contain at least 1 and no more than 10,000 recipients.
fromPhoneNumber, countryCode, and toPhoneNumber must contain digits only.
A duplicate recipient causes the entire request to return 400; the valid recipients are not queued separately.
The template must belong to the sender and have APPROVED status.
Each parameter array must match the selected template’s numbered placeholders.

Check for duplicate recipients before sending. A single duplicate rejects the complete broadcast request.

Errors and retries

Status	Cause	What to do
`400`	Invalid recipient, duplicate, template, parameter count, or list size	Correct the request before retrying
`401`	Invalid key, wrong sender organization, or incomplete WABA configuration	Check the organization key and sender
`409`	The idempotency key is already being processed	Wait for the original request
`429`	More than 10 requests in the current window	Wait for the interval in the response
`500` or `503`	Transient service failure	Retry with exponential backoff and the same idempotency key

Do not change the idempotency key while retrying the same payload. A different key represents a new broadcast and can create duplicate sends.

Overview

WABA API Documentation

Webhook

Send a Template Broadcast

Endpoint

Headers

Request body

Recipient object

Request example

Responses by broadcast size

Up to 1,000 recipients

1,001 to 10,000 recipients

Validation behavior

Errors and retries

​Endpoint

​Headers

​Request body

​Recipient object

​Request example

​Responses by broadcast size

​Up to 1,000 recipients

​1,001 to 10,000 recipients

​Validation behavior

​Errors and retries

Endpoint

Headers

Request body

Recipient object

Request example

Responses by broadcast size

Up to 1,000 recipients

1,001 to 10,000 recipients

Validation behavior

Errors and retries