Coming Soon

WhatsApp API.
without the Meta headache.

Send WhatsApp messages from your app in 5 minutes. No Meta Business verification. No pre-approved templates. Just a REST API and one API key.

Join the Waitlist

Launching soon · Priority access for early sign-ups

Send text, images, and channel posts — same endpoint
// Send a text message
await rex.send({
  to: "60123456789",
  text: "Hi! Your order has been shipped."
})

// Send an image with caption
await rex.send({
  to: "60123456789",
  text: "Check out this new listing!",
  media: { url: "https://...", type: "image" }
})

// Post to a WhatsApp Channel
await rex.send({
  channel: "your-channel-id",
  text: "New update for all subscribers!"
})
What you can build

Four building blocks.
One API.

💬
Messages & media
Send text, images, PDFs, and videos to any WhatsApp number via a single endpoint.
📢
Channel broadcasts
Post to WhatsApp Channels (newsletters) via API. Reach your subscribers programmatically.
✅
Number validation
Check if a phone number is on WhatsApp before sending. No wasted messages.
🔔
Webhooks
Real-time callbacks for delivery, read receipts, and incoming replies. Trigger workflows, sync with your CRM, or alert your team.
How it works

From zero to sending
in 5 minutes.

1
Get your API key
Sign up, connect your WhatsApp number via QR code, and get your API credentials.
2
Make your first API call
Simple REST API. Send a message in one HTTP request. Works with curl, Python, Node — anything that speaks HTTP.
3
Go live
Send messages, manage channels, receive webhooks. You're production-ready from day one.
Pricing

Simple, transparent pricing.

Starter
$19/month
  • 1 WhatsApp number
  • 2,000 messages/month
  • Channel broadcasts
  • Webhooks
  • Media support
  • Email support
Growth
$49/month
  • 3 WhatsApp numbers
  • 10,000 messages/month
  • Channel broadcasts
  • Webhooks
  • Number validation
  • Priority support
Enterprise
Custom
  • Unlimited numbers
  • Custom volume
  • Dedicated infrastructure
  • SLA guarantee
  • Dedicated support

Waitlist members lock in launch pricing for 3 months.

Why Rex API?

No approval process
No Meta business verification, no pre-approved templates, no 24-hour messaging window. Connect via QR and start sending.
Flat-rate pricing, not per-message
One API key. No metered billing surprises. You know what you'll pay before you send a single message.
We handle the WhatsApp mess
Session management, reconnection, uptime monitoring — all handled. You call the API. We keep the connection alive.

Need a custom integration? We'll build and manage it for you.

Talk to us →

Be first in line

Rex API is launching soon. Join the waitlist and you'll be the first to get API credentials — plus 3 months of launch pricing locked in.

Free during beta · No credit card required

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