New Broadcast
Channel
Template
Recipients
Sending to 2,847 recipients
Don't miss out!
Hi Marc, for the next 24 hours only, all winter jackets are 50% off.
🛒 Shop the collection: zernio.shop/sale
The North Store
+34 91 010 10 32
Ship WhatsApp integration
in minutes, not months
One REST API for WhatsApp Business. Messaging, broadcasts, calling, and ads through one bearer token.
- SOC 2
- GDPR compliant
- 99.97% uptime
- Under 50ms response
Trusted by developers at
Everything between you and your first message, handled.
Zernio API
One API key
No Meta Business verification process. Start sending in 30 seconds
No Meta App Review
Embedded Signup handles it
Reliable webhook delivery with built-in retry logic
Same JSON format across every platform
Limits handled
The 24h window, rate limits, messaging tiers. You just call POST
Building it yourself (WhatsApp Cloud API)
Five Meta products to navigate
Business Manager, App Dashboard, WABA, phone setup, verification before your first message
App Review can take weeks
Sometimes with no clear reason for denial
No built-in webhook replay or retry logic
Yours to build and maintain
Tier management
New accounts start at 250 messages a day. Upgrades are on you
From zero to first message in three minutes
Get a number
recommendedFrom $2/mo. Pick a country, we handle setup.
Use my own number
Bring your existing phone number. Requires verification during setup.
Connect in one click
Bring a number you already have or buy one in Zernio. Embedded Signup verifies it, and you're set with full API access.
Hi
You
Hi
Hello!
This is a test message to try your flow.
Send your first message
One POST request sends templates, media, voice notes, or interactive messages the same simple way every time.
Conversations
Òscar
+34 634 44 21 23
All works!
Whatsapp Bus...
+34 639 32 11 23
Hey, i have a question...
Every reply in one inbox
Replies land in a shared inbox for your team, and every message tracks sent, delivered, and read status automatically.
Buy a WhatsApp number in 50+ countries
Pick a country
Zernio provisions the number, verifies it, and connects it for messaging and calling.
Everything you need to ship WhatsApp features
Olly, a gentle reminder: summer is here ⛱️
Tap below to see all products on sale and enjoy free shipping!
Messaging
Send to one person, a group chat, or a broadcast to thousands. Schedule it, track delivery per recipient, cancel before it sends.
Sofia
AI Agent
Incoming call
Voice call
9 min
Calling
Take and place calls on WhatsApp. Route to a phone line, SIP, or a voice agent (Vapi, Retell, ElevenLabs).
Conversations
Òscar
+34 634 44 21 23
All works!
Whatsapp Bus...
+34 639 32 11 23
Hey, i have a question...
Whatsapp Bus...
+34 639 32 11 23
Hey, i have a question...
Unified inbox
Every reply in one place. WhatsApp, Telegram, Instagram, Facebook, X, Reddit, and Bluesky.
Send message
Hi! I can help with that 👋
AI Agent
Model: understands context
Hey, Leo! Let me connect you with a teammate, one sec 👋
WhatsApp chatbots
Build AI agents and automation that understand context. Connect your AI, hand off to a human anytime.
Olly Bennett
+34 612 34 56 78
Sarah Klein
+49 170 123 4567
James Carter
+1 415 555 0192
Contacts
Send a broadcast that knows who it's going to. Tags, opt-in status, and custom fields on every contact.
👋 Thanks for clicking our ad!
The Summer Jacket you saw is 20% off today 🎉
Click-to-WhatsApp Ads
Turn ad clicks into WhatsApp chats. Send conversions back to Meta for attribution.
Let an agent run WhatsApp end to end
The entire flow runs through Zernio's MCP server, so an AI agent can buy a number, complete verification, and start messaging or calling without a human touching the dashboard.
REST API + 8 SDKs
$
✓ 200 · one JSON shape
One bearer token, one JSON shape.
CLI
$
{ "status": "sent", "id": "msg_8f2a" }
{ "error": "rate_limit", "retry_in": 3 }
↳ agent parses + recovers
Structured JSON output built for agents to parse and recover from errors.
For Claude, Cursor, and any MCP client.
LLM-optimized docs mean any agent can wire up the full WhatsApp surface itself.
MCP server
›
Claude Code v2.1.19
Opus 4.5 · Claude Max
~/software
›
✓ agent wired the full WhatsApp surface
Meta's rates, zero markup
You pay Zernio only for connected accounts and the number itself. Everything the API does is free. Meta bills the message directly, at their rate.
$0 /account
first 2, then graduated
$2 /number
optional, if bought here
Example number pricing by country
Monthly Price
Example Countries
$2
$3
$5
$6
$10
$15–$20
Frequently Asked Questions
Ship WhatsApp today
No credit card, no sales call. Test in the sandbox before you connect a number.
- SOC 2
- GDPR compliant
- 99.97% uptime
- Under 50ms response
