The WhatsApp Business API & Real-Time Webhooks Engine Built for Developers
Connect WhatsX to any stack in minutes. Dispatch high-throughput transactional broadcasts, stream customer conversations via signed HMAC webhooks, and automate complex workflows with sub-85ms latency.
Test Endpoints in Real-Time
Inspect request syntax across languages, simulate network roundtrips, and view instantaneous server responses.
curl -X POST "https://api.whatsx.in/v1/messages/template" \ -H "Authorization: Bearer s7_live_948a7c2901ef" \ -H "Content-Type: application/json" \ -d '{ "to": "+919876543210", "template_name": "order_confirmed", "language": "en_US", "components": [ { "type": "body", "parameters": [ { "type": "text", "text": "Aarav Sharma" }, { "type": "text", "text": "ORD-94821" }, { "type": "text", "text": "₹2,499.00" } ] }, { "type": "button", "sub_type": "url", "index": "0", "parameters": [{ "type": "text", "text": "ORD-94821" }] } ] }'{ "status": "success", "data": { "id": "wamid.HBgMOTE5ODc2NTQzMjEwFQIAERgSRjQyNDk5NTUzNjA4OTk5Q0ZBAA==", "recipient": "+919876543210", "template": "order_confirmed", "delivery_status": "enqueued", "latency_ms": 64, "pricing": { "category": "utility", "currency": "INR", "billable": true }, "created_at": "2026-11-05T12:45:00.124Z" } }Engineered for Massive Scale
Every millisecond counts. Built with zero-loss queue backpressure, high concurrency, and enterprise security.
High-Throughput Message Queue
Redis-backed persistent queues deliver messages with sub-85ms latency. Smart rate-limiting prevents Meta policy violations while maintaining maximum dispatch velocity.
Real-Time Signed Webhooks
Stream inbound messages, delivery receipts, and button clicks straight to your backend HTTP endpoints with HMAC-SHA256 signature verification.
Parametric Meta HSM Templates
Dynamic placeholder hydration for utility notifications, authentication OTPs, and promotional campaigns with automated multi-language fallback.
24h Session Window Tracking
Built-in conversation timers track the Meta 24-hour customer service window so your backend always knows whether to send free-form session messages or HSM templates.
Media & Invoice Pipelines
Directly stream generated PDF tax invoices, order packing slips, voice recordings, and product catalogs with high-speed CDN caching.
Bank-Grade Enterprise Security
End-to-end 256-bit AES encryption in transit and at rest. Granular scoped API tokens, static IP whitelisting, and full compliance with GDPR and SOC-2.
Interactive Webhook Inspector
Inspect real-time JSON payloads for every event lifecycle, and verify HMAC-SHA256 signatures with copy-paste code.
{ "event": "messages.received", "timestamp": 1730811900, "data": { "message_id": "wamid.HBgMOTE5ODc2NTQzMjEwFQIAERgSMzEyNzE4MjM4OTAw", "from": "+919876543210", "sender_name": "Aarav Sharma", "type": "text", "text": { "body": "Hi, I want to track my order #ORD-94821 and verify the delivery slot." }, "context": { "is_forwarded": false, "frequently_forwarded": false } } }X-WhatsX-Signature-256 header. Verify it with your Webhook Secret using crypto.createHmac('sha256', secret).Developer SDKs & Tooling
Install lightweight, typed SDKs for your programming language or test directly via Postman.
Node.js & TypeScript
npm install @whatsx/sdkPython
pip install whatsx-sdkPHP / Laravel
composer require whatsx/whatsapp-sdkGo Lang
go get github.com/whatsx/whatsx-goPostman Collection
Import WhatsX_v1.postman_collection.jsonDocker Webhook Relay
docker pull whatsx/webhook-relay:latestFrom Zero to Production in 4 Steps
No endless paperwork or complex Meta Cloud onboarding. Test right away in our developer sandbox.
Generate API Key
Sign up in 30 seconds and grab your secret s7_live_... API token from the WhatsX dashboard.
Set Webhook URL
Paste your HTTPS endpoint to receive instant callbacks for message deliveries, reads, and customer replies.
Test in Sandbox
Fire test messages to your own WhatsApp number using our interactive playground or Postman collection.
Go Live on WABA
Attach your verified business phone number and scale campaigns to millions of users with zero friction.
Rate Limits & SLA Tiers
Transparent throughput limits designed to scale smoothly from early development to enterprise traffic.
| Capability | Developer Sandbox | Scale Tier | Enterprise High-Volume |
|---|---|---|---|
| Max Dispatch Throughput | 10 msg/sec | 80 msg/sec | 1,000+ msg/sec (Dedicated) |
| P99 API Response Latency | <100ms | <85ms | <50ms (Direct VPC Route) |
| Webhook Backoff Retries | 3 Retries (1h) | 8 Retries (12h) | 24h Queue Retries + Dead Letter |
| Guaranteed Uptime SLA | 99.9% | 99.95% | 99.99% Financial SLA |
| Static IP Whitelisting | Shared IPs | Standard Egress | Dedicated Static IPs |
| Support & Solutions Architect | Community Discord | Priority Email | Dedicated Slack Channel & 15m SLA |
Frequently Asked Technical Questions
Detailed answers on webhook security, rate limits, sandbox testing, and architecture.
WhatsX is built on official Meta Cloud API infrastructure with our proprietary global routing layer and Redis edge queues. P99 message ingestion latency is sub-85ms, with direct webhook callbacks firing in under 120ms.
Start Building WhatsApp Flows Today
Generate your API key in under 60 seconds. 1,000 free test messages included, zero credit card required.