# Wazen

> WhatsApp API for Developers. Send and receive WhatsApp messages through a simple REST API.

Wazen is a developer platform that provides a REST API for WhatsApp messaging. It handles session management, message delivery, rate limiting, and smart warming so developers can focus on building their products.

## Core Capabilities

- REST API for sending and receiving WhatsApp messages (text, media, documents)
- Session management with QR code pairing
- Smart warming module for new numbers (14-day automated ramp-up)
- Real-time webhooks with HMAC-signed payloads
- Group messaging and channel broadcasting API
- Bulk number validation
- MCP server for AI agent integration (30+ tools)
- Official SDKs for TypeScript, Python, .NET/C#, and PHP

## API

Base URL: https://wazen.dev/api/v1
Authentication: Bearer token (API key) in Authorization header
OpenAPI spec: https://wazen.dev/api/docs/openapi.yaml

## MCP Server

Endpoint: https://wazen.dev/mcp
Protocol: JSON-RPC 2.0 over HTTP
Authentication: Bearer token in Authorization header
Compatible with: Claude Desktop, Claude Code, Cursor, and any MCP client

## Links

- Homepage: https://wazen.dev
- Blog: https://wazen.dev/blog
- API Documentation: https://wazen.dev/docs
- MCP Server Guide: https://wazen.dev/docs/mcp
- Pricing: https://wazen.dev/pricing
- TypeScript SDK: https://www.npmjs.com/package/@wazen/sdk
- RSS Feed: https://wazen.dev/feed.xml

## Pricing

- Starter: £4.99/month or £49/year (1 WhatsApp number)
- Pro: £14.99/month or £149/year (3 WhatsApp numbers)
- Business: £34.99/month or £349/year (10 WhatsApp numbers)
- Every feature is on every plan; no message caps or per-message fees
- Free 7-day trial, no card needed: 1 number, up to 150 messages and 5 different chats a day