Every page on Engage

Engage — the WhatsApp Business Platform for growing teams.

The official WhatsApp Business API for Indian businesses: features, pricing and how to start.

Guides to the WhatsApp Business API: pricing, templates, limits, OTPs and more.

Plans, limits and the 14-day free trial.

How Engage protects your WhatsApp business data.

Talk to the Engage team about pricing, demos and support.

What data we collect and how we use it.

The terms for using Engage.

How the official WhatsApp Business Platform works, what it costs, and how to get started in an afternoon.

Per-message rates, what’s free, how GST and provider fees add up—with worked examples.

A side-by-side comparison, the signs you’ve outgrown the app, and how to switch without losing your number.

Categories, formatting rules, the usual rejection reasons and how to fix them.

Quality ratings, opt-in, per-user limits and the habits that keep campaigns delivered.

What the 250 / 2K / 10K / 100K tiers mean, what counts against them and how to move up.

The two routes to a verified badge, what Meta looks for, and why applications fail.

Authentication templates, copy-code buttons, India costs and how WhatsApp compares with SMS.

What you can send inside and outside the window, free entry points, and the errors you’ll see.

Connect WhatsApp to your AI assistant with MCP—and keep control of what it can do.

Engage is a REST API for the official WhatsApp Business Platform: send any message type, manage templates, contacts and campaigns, and receive signed webhooks at https://engage.swastik.ai/v1.

Send your first WhatsApp message with the Engage API in four steps: connect a number, create an API key, send the hello_world template and track delivery with webhooks.

Authenticate Engage API requests with a Bearer API key (egk_live_…), grant it only the permissions it needs, restrict it by IP and set an expiry.

Engage API errors use one JSON envelope with a stable code and request_id; each API key has a per-plan request rate and 429 responses include Retry-After.

Send an Idempotency-Key header when sending WhatsApp messages through Engage so retries within 24 hours never send the same message twice.

Engage list endpoints use opaque cursors: pass limit and the previous next_cursor until it is null.

Send WhatsApp text, template, image, video, audio, document, sticker, location, contact, interactive and reaction messages with POST /v1/messages, singly or 1,000 at a time.

Read WhatsApp conversation history, reply in a thread, assign, snooze and resolve conversations from the Engage team inbox through the API.

Create, submit, edit, sync and delete WhatsApp message templates with the Engage API, and learn Meta's limits and template statuses.

Upload images, videos, audio and documents to Engage once and send them by media id, or download media customers send you.

List the WhatsApp phone numbers connected to your Engage organization and read their quality rating, messaging limit and business profile.

Create, update, tag, import (CSV), export and bulk-edit WhatsApp contacts and their opt-in state with the Engage API.

Group WhatsApp contacts with tags, static lists, rule-based segments and custom attributes, and use them as campaign audiences.

Create, estimate, schedule, launch, pause and report on WhatsApp template broadcast campaigns with the Engage API.

Receive signed Engage webhook events for inbound WhatsApp messages, delivery statuses, contacts, templates and numbers, and verify the HMAC-SHA256 signature.

Connect ChatGPT, Claude and other AI assistants to Engage through its MCP server, with access limited by your API key permissions and plan.

Pull WhatsApp messaging analytics (sent, delivered, read, failed, estimated Meta cost) and trigger Engage automations from your own events.