📱 WhatsApp MCP — Remote HTTP/SSE Server

Model Context Protocol (MCP) server for WhatsApp, built with whatsapp-web.js and TypeScript.
Supports both local stdio (Claude Desktop) and remote HTTP/SSE (Claude.ai Remote MCP) modes.

⚠️ WhatsApp Terms of Service — IMPORTANT

Read this before using this project.

WhatsApp's Terms of Service and Acceptable Use Policy prohibit the use of unofficial automation tools on personal or business accounts.

🚫 Actions that will get your number BANNED:

✅ Safer Practices:

• Use a dedicated/test phone number, not your personal number

• Only message contacts who have opted in

• Keep message frequency low and human-like

• Do not expose your /sse or REST endpoints publicly without API_KEY protection

• Do not use this for marketing, sales blasting, or any commercial messaging at scale

• Use WhatsApp Business API (Official) for production/commercial use

🔒 This project is intended for personal automation and development/testing only.
The author is not responsible for any account bans or legal consequences resulting from misuse.

Related MCP server: WhatsApp Web MCP

🗂️ Project Structure

whatsapp-mcp/
├── src/
│   ├── index.ts          # stdio MCP server (Claude Desktop)
│   ├── remote.ts         # HTTP/SSE MCP server (Remote MCP + REST API)
│   └── send_message.ts   # CLI script to send a single message
├── dist/                 # Compiled JavaScript (auto-generated, do not edit)
├── .wwebjs_auth/         # WhatsApp session data (⚠️ keep this gitignored!)
├── .wwebjs_cache/        # Puppeteer browser cache (gitignored)
├── package.json
├── tsconfig.json
├── render.yaml           # Render.com deployment config
├── start-remote.bat      # Windows quick-start script
└── README.md

🚀 Quick Start

Prerequisites

• Node.js v18+ and npm

• A WhatsApp account (use a test number!)

• Google Chrome or Chromium installed (used by Puppeteer internally)

1. Install Dependencies

npm install

2. Build TypeScript

npm run build

3. Start the Server

Remote HTTP/SSE mode (Claude.ai Remote MCP):

npm run start:remote

Dev mode (no build needed, uses ts-node):

npm run dev:remote

stdio mode (Claude Desktop):

npm start

4. Scan the QR Code

Open your browser and go to:

http://localhost:3000/qr

Scan the QR code with WhatsApp → Linked Devices → Link a Device.

🔌 API Endpoints

🛠️ Available MCP Tools

🔐 Optional: Bearer Token Auth

Protect your REST endpoints by setting an API_KEY environment variable:

API_KEY=mysecretkey npm run start:remote

Include the token in all requests:

curl -H "Authorization: Bearer mysecretkey" http://localhost:3000/tools/status

🌐 Testing with ngrok (Public HTTPS)

1. Install ngrok

2. Start your server: npm run start:remote

3. In a new terminal: ngrok http 3000

4. Copy the generated URL (e.g., https://xxxx.ngrok-free.app)

In Claude.ai → Settings → Integrations → Remote MCP, paste:

https://xxxx.ngrok-free.app/sse

☁️ Deploy to Render

1. Push this repo to GitHub (see Git steps below)

2. Go to render.com → New → Web Service

3. Connect your GitHub repository

4. Configure:

   • Build Command: npm install && npm run build

   • Start Command: npm run start:remote

   • Environment: NODE_ENV=production

   • Optional: API_KEY=yoursecretkey

5. Deploy and copy your https://your-app.onrender.com URL

Paste into Claude Remote MCP:

https://your-app.onrender.com/sse

⚠️ Note: WhatsApp session data (.wwebjs_auth) does not persist across Render deploys. Use a Render Disk or re-scan the QR code after each deploy.

📦 npm Scripts

📄 .gitignore Recommendations

Make sure your .gitignore includes:

node_modules/
dist/
.wwebjs_auth/
.wwebjs_cache/
.env
*.bat

🔒 Never commit .wwebjs_auth/ — it contains your WhatsApp session credentials.

🔧 Environment Variables

🤝 Contributing

Pull requests are welcome! For major changes, please open an issue first.

📜 License

MIT — use responsibly and in accordance with WhatsApp's Terms of Service.

💡 Tip: Install the GitLens extension in VS Code for a much richer Git experience — commit history, blame, comparisons and more.