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Developer API & Webhooks

Connect Promptengage
to Your Systems with Our REST API

Seamlessly integrate WhatsApp bulk broadcasting, template messaging, contacts syncing, and chatbot actions with your CRM, ERP, and internal systems using our simple, secure HTTP REST API.

GET API KEY ➞
RESTful Architecture Secure Token Auth
POST /api/v1/send-template
curl -X POST "https://api.promptengage.com/v1/send" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
  "to": "+1234567890",
  "template": "order_confirmation",
  "parameters": ["John", "#9982"]
}'
// Response 200 OK
{
  "status": "success",
  "message_id": "msg_88f9a88fa",
  "delivered": true
}

Full-Featured WhatsApp API

Interact with your Promptengage account programmatically using our RESTful endpoints.

Send Template Messages

Automate transaction updates, alert notifications, and verification codes programmatically.

Manage Subscribers

Synchronize database profiles, add custom tags, and update contact attributes in real-time.

Contact Segmentation

Assign users to specific segments, trigger broadcasts, and split targets dynamically.

Chatbot Automation

Trigger automated chatbot paths or dynamically fetch data from external APIs mid-flow.

Campaign Dispatch

Send targeted WhatsApp broadcast newsletters directly from your CRM or ERP system.

Real-Time Webhooks

Get instant webhook notifications for sent, delivered, read status, and customer replies.

Connect with Your Entire Stack

Prefer a no-code approach? Connect Promptengage with 5,000+ apps using our pre-built integration nodes on popular automation tools.

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HubSpot HubSpot
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Developer Setup Guide

Get up and running with Promptengage API in 4 simple steps.

Step 01

Generate API Key

Generate your secure bearer API credentials inside the API Developer settings console in your account.

Step 02

Configure Endpoints

Target endpoint resources (like send message, manage contacts) and specify template parameters in request.

Step 03

Register Webhooks

Register custom callback URL hooks to receive read receipts, delivery reports, and customer inputs.

Step 04

Monitor Operations

Watch throughput, error rates, and requests/responses performance inside your developer diagnostics panel.

API & Webhooks FAQ

Everything you need to know about integrating Promptengage with your backend workflows.

  • How do I authenticate API requests?

    All requests must include a Bearer authentication token in the request headers: Authorization: Bearer YOUR_API_KEY. Generate this secret key inside your Developer settings dashboard.

  • What are the API rate limits?

    Promptengage supports high concurrency message dispatching. The actual rate limits depend on your Meta WhatsApp Business API Tier (allowing between 1,000 to unlimited unique customer messages per 24 hours).

  • Can I set up custom webhooks?

    Yes, you can register custom webhook URL endpoints in your account settings. This allows you to listen to real-time events such as message delivered, read, failed, and customer replies.

  • Do you charge additional API fees?

    No, Promptengage does not charge markup fees on Meta API calls. You only pay standard Meta wholesales fees for conversations, plus your regular subscription tier plan rates.

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Start Automating Your WhatsApp Workflows Today

Generate your API key or check our developer resources to build custom automations.

GET MY API KEY ➞

Start 7-Days Free Trial • No credit card required.