Multi-Session Management
Connect multiple WhatsApp numbers. QR code pairing, auto-reconnect, health monitoring.
WhatsApp API Gateway
Integrate WhatsApp into your product in minutes
Send messages, manage sessions, receive webhooks. Simple REST API with full WhatsApp Business features.
7-day free trial. No credit card required.
curl -X POST https://api.vesper.dev/v1/messages/send/text \
-H "Authorization: Bearer vsp_1a2b3c4d5e6f" \
-H "Content-Type: application/json" \
-d '{
"sessionId": "my-session",
"to": "905551234567",
"text": "Hello from Vesper!"
}'200 OK{ "success": true, "messageId": "3EB0..." }
Everything you need
A complete WhatsApp API solution for your business
Rich Messaging
Text, images, videos, documents, audio, location. Send and receive all message types.
Real-time Webhooks
Get notified instantly when messages arrive, are delivered, or read. HMAC-signed payloads.
Group Management
Create groups, manage participants, update settings. Full group API support.
Secure by Design
API key authentication, rate limiting, encrypted storage. Enterprise-grade security.
Built to Scale
Queue-based architecture with BullMQ. Handle thousands of messages per minute.
Get started in 3 steps
01
1. Create an app & get your API key
POST /api/v1/auth/register → Create app → Get API key (vsp_...)
02
2. Start a WhatsApp session
POST /api/v1/sessions → Scan QR → WhatsApp connected
03
3. Send your first message
POST /api/v1/messages/send/text
→ {"to": "905551234567", "text": "Hello!"}Simple, transparent pricing
Start with a free trial. Upgrade when you're ready.
Starter
€29/month
- 1 App
- 2 Sessions per App
- 5,000 Messages/month
- Webhook support
- Email support
Most Popular
Pro
€69/month
- 3 Apps
- 10 Sessions per App
- 25,000 Messages/month
- Priority webhook delivery
- Priority support
Enterprise
€149/month
- 10 Apps
- 50 Sessions per App
- 100,000 Messages/month
- Dedicated infrastructure
- 24/7 support
- Custom integrations
Frequently Asked Questions
Everything you need to know about Vesper