Connect your Wassenger WhatsApp numbers to Claude, the most powerful AI assistant, and automate messages, conversations, and workflows — all from natural language.

This guide shows you how to set up the integration step by step, with four different methods depending on how you use Claude.

This integration creates a direct bridge between Claude and your WhatsApp. Instead of manually copying messages back and forth, Claude can read, send, and manage your WhatsApp conversations directly.

Once connected, you simply tell Claude what to do:

• "Send a WhatsApp message to +1234567890 saying hello"
• "Show me my unread conversations"
• "Reply to all pending customer messages"

This is powered by the MCP (Model Context Protocol) — the same standard used by all major AI tools to connect with external services.

Claude stands out as the most capable AI for WhatsApp automation:

• Thinks before acting — Claude reasons through complex tasks instead of rushing to respond
• Handles multi-step workflows — Ask Claude to read messages, analyze sentiment, and draft replies in one go
• Understands full context — Claude reads entire conversations to give relevant, personalized responses
• Available everywhere — Desktop app, web, CLI, and API

1. A Wassenger account with at least one connected WhatsApp device. Don't have one yet? Create your free account here.
2. Your API key — this is a unique token that authorizes Claude to access your WhatsApp. Get your API key here from Settings → API Keys.

Works on both claude.ai and the Desktop app. No installation required — this is the fastest way to get started.

Open Claude (web or desktop) and click the Customize icon in the left sidebar.

In the Customize panel, click Connectors.

Click the + button at the top, then select Add custom connector.

In the modal, enter a name (e.g., "WhatsApp") and paste your MCP server URL:

https://api.wassenger.com/mcp?key={{apikey}}

Then click Add.

Open a new conversation and try typing: "Show me my connected WhatsApp devices"

You can also add the connector by editing a configuration file directly:

• Mac: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "whatsapp": {
      "type": "http",
      "url": "https://api.wassenger.com/mcp?key={{apikey}}"
    }
  }
}

After editing the file, restart Claude Desktop (Cmd + Q on Mac, Alt + F4 on Windows) and reopen it.

For developers working from the terminal.

Add the server with a single command:

claude mcp add whatsapp "https://api.wassenger.com/mcp?key={{apikey}}"

Or create a .mcp.json file in your project root:

{
  "servers": {
    "whatsapp": {
      "type": "http",
      "url": "https://api.wassenger.com/mcp?key={{apikey}}"
    }
  }
}

Restart Claude Code and verify by typing: "Ping the WhatsApp MCP server"

For building products and autonomous agents.

import anthropic

client = anthropic.Anthropic()

response = client.messages.create(
    model="claude-sonnet-4-20250514",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Send a WhatsApp message to +1234567890 saying hello"}
    ],
    mcp_servers=[
        {
            "type": "url",
            "url": "https://api.wassenger.com/mcp?key={{apikey}}",
            "name": "whatsapp"
        }
    ]
)

import Anthropic from '@anthropic-ai/sdk'

const client = new Anthropic()

const response = await client.messages.create({
  model: 'claude-sonnet-4-20250514',
  max_tokens: 1024,
  messages: [
    { role: 'user', content: 'Send a WhatsApp to +1234567890 saying hello' }
  ],
  mcp_servers: [
    {
      type: 'url',
      url: 'https://api.wassenger.com/mcp?key={{apikey}}',
      name: 'whatsapp'
    }
  ]
})

For full API documentation, visit the Anthropic MCP docs.

Here's what a real conversation with Claude looks like once WhatsApp is connected:

You: "Show me my connected WhatsApp devices"

Claude:

You: "Send a message from Sales to +1 212 555 9876 saying: Hi! Just checking in on your order. Let me know if you need anything."

Claude:

You: "Show me my last 5 conversations"

Claude:

Once connected, try these prompts in order:

1. Verify your connection:

Claude will respond with a list of your devices, their phone numbers, and whether they're online — confirming everything works.

2. Send a test message:

You'll see a confirmation with the sender, recipient, and message content. The message arrives on WhatsApp instantly.

3. Read your conversations:

Claude will show a formatted table of your recent chats with names, last message preview, and timestamps.

4. Get an AI insight:

This is where Claude shines — it reads your messages, understands the context, and gives you a human-readable summary like:

5. Your first automation:

Claude reads each unread message, drafts a personalized response, and presents them for your approval:

Here are powerful prompts you can use right away:

1. Customer Support on Autopilot

2. Smart Lead Follow-Up

Claude will identify unanswered conversations and draft personalized follow-ups:

3. Broadcast Campaigns

4. Sentiment Analysis

Claude reads through your conversations and gives you a breakdown:

5. Group Management

6. Monthly Reports

7. Instant Translation

8. Scheduled Messages

9. Media Management

10. Team Workflows

Claude doesn't show WhatsApp tools

• Verify your API key is correct (no extra spaces)
• Restart Claude completely (quit and reopen)
• Confirm your Wassenger account has at least one connected device

Message failed to send

• Check that your device is online in your Wassenger dashboard
• Ensure the phone number includes the country code (e.g., +1 for US)

Authentication error

• Your API key may have expired — generate a new one in Settings → API Keys

Claude responds but doesn't execute actions

• Look for the tools icon in Claude's interface
• Start a new conversation if the current one doesn't show tools

• MCP Server Documentation — Full technical reference with all available tools
• API Key Management — Create and manage your API keys