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Jem-HR

PyWA MCP Server

by Jem-HR
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Python
Remote

PyWA MCP Server

A comprehensive Model Context Protocol (MCP) server that exposes full WhatsApp Business API functionality using the PyWA library.

Features

This MCP server provides 18 WhatsApp tools organized into four categories:

Messaging Tools (12)

  • Text & Media: send_message, send_image, send_video, send_document, send_audio, send_sticker

  • Location & Contacts: send_location, request_location, send_contact

  • Interactions: send_reaction, remove_reaction, upload_media

Interactive Tools (2)

  • Interactive Messages: send_message_with_buttons, send_message_with_list

Template Tools (2)

  • Template Messaging: send_template, get_templates

Status Tools (2)

  • Message Status: mark_message_as_read, indicate_typing

Setup

  1. Install dependencies:

    uv sync

  2. Configure WhatsApp credentials:

    cp .env.example .env # Edit .env with your WhatsApp Cloud API credentials

  3. Run the server:

    # Production mode uv run python server.py # Development mode with Web UI (recommended for testing) uv run fastmcp dev --ui-port 6275 server.py

Configuration

Set these environment variables:

  • WHATSAPP_PHONE_ID - Your WhatsApp Business phone number ID

  • WHATSAPP_TOKEN - Your WhatsApp Cloud API access token

Get these from your Meta Developer Console.

Development & Testing

Web UI (Recommended for Development)

Test your WhatsApp tools interactively with the FastMCP Inspector:

uv run fastmcp dev --ui-port 6275 server.py

Open http://localhost:6275 in your browser to:

  • View all 15+ WhatsApp tools

  • Test messaging, buttons, lists, templates

  • See real-time API calls and responses

  • Debug with comprehensive error messages

Testing with Real WhatsApp

  1. Get WhatsApp Business API credentials from Meta Developer Console

  2. Add test phone numbers in your Meta Developer Console

  3. Use the Web UI to send messages to test numbers

  4. Verify messages appear in WhatsApp

Claude Desktop Integration

Quick Setup (One Command)

Install directly in Claude Desktop config:

{ "mcpServers": { "pywa-whatsapp": { "command": "uvx", "args": [ "--from", "git+https://github.com/Jem-HR/pywa-mcp-server.git", "pywa-mcp-server" ], "env": { "WHATSAPP_PHONE_ID": "your_phone_id", "WHATSAPP_TOKEN": "your_token" } } } }

This automatically downloads and runs the server without manual installation.

Manual Configuration

  1. Locate Claude Desktop config file:

    • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

    • Windows: %APPDATA%\Claude\claude_desktop_config.json

  2. Add server configuration:

    { "mcpServers": { "pywa-whatsapp": { "command": "uv", "args": [ "run", "python", "/path/to/pywa-mcp-server/server.py" ], "env": { "WHATSAPP_PHONE_ID": "your_phone_number_id", "WHATSAPP_TOKEN": "your_whatsapp_cloud_api_token" } } } }

  3. Restart Claude Desktop

  4. Verify connection: Look for the 🔨 hammer icon in Claude Desktop

Using WhatsApp Tools in Claude Desktop

Once connected, you can ask Claude to:

Send Messages:

Send a WhatsApp message to +1234567890 saying "Hello from Claude!"

Create Interactive Buttons:

Send a WhatsApp message with buttons asking "Are you available?" with Yes/No options to +1234567890

Build Menu Lists:

Create a WhatsApp menu for a restaurant with sections for Main Courses and Beverages, send to +1234567890

Show Typing Indicators:

Show typing indicator for WhatsApp message ID wamid.XXX to let the user know I'm preparing a response

Send Media:

Send an image from URL https://example.com/image.jpg with caption "Check this out!" to +1234567890

Use Templates:

Send the "welcome_message" template in English to +1234567890

Available WhatsApp Tools in Claude

Claude has access to these WhatsApp capabilities:

📝 Messaging (12 tools):

  • send_message - Text messages with headers/footers

  • send_image - Images with captions

  • send_video - Videos with captions

  • send_document - Files with custom names

  • send_audio - Audio messages

  • send_sticker - WebP stickers

  • send_location - GPS coordinates

  • request_location - Ask user for location

  • send_contact - Contact cards

  • send_reaction - Emoji reactions

  • remove_reaction - Remove reactions

  • upload_media - Upload files to WhatsApp

🎛️ Interactive (2 tools):

  • send_message_with_buttons - Up to 3 reply buttons

  • send_message_with_list - Selection lists with sections

📋 Templates (2 tools):

  • send_template - Pre-approved template messages

  • get_templates - List available templates

⚡ Status (2 tools):

  • mark_message_as_read - Mark messages as read

  • indicate_typing - Show typing indicator

Architecture

The server uses a modular architecture:

  • server.py - Main MCP server using FastMCP framework

  • tools/messaging.py - Text, media, location, contact, and reaction tools

  • tools/interactive.py - Button, list, catalog, and flow message tools

  • tools/templates.py - Template messaging and authentication tools

All tools follow consistent patterns:

  • Async implementation for optimal performance

  • Comprehensive error handling with success/error responses

  • Direct mapping to PyWA library methods

  • Full type safety and parameter validation

Tool Examples

send_message

Send a text message to a WhatsApp user.

{ "to": "+1234567890", "text": "Hello from PyWA MCP Server!", "preview_url": true, "reply_to_message_id": "optional_message_id" }

send_button_message

Send an interactive message with reply buttons.

{ "to": "+1234567890", "text": "Choose an option:", "buttons": [ {"id": "option1", "title": "Option 1"}, {"id": "option2", "title": "Option 2"} ], "header": "Quick Actions", "footer": "Select one option" }

send_template

Send a pre-approved template message.

{ "to": "+1234567890", "template": "hello_world", "language": "en", "components": [ { "type": "body", "parameters": [ {"type": "text", "text": "John Doe"} ] } ] }

Troubleshooting

Common Issues

❌ "Missing required environment variables"

  • Ensure .env file exists with WHATSAPP_PHONE_ID and WHATSAPP_TOKEN

  • Check values are correct from Meta Developer Console

❌ "Cannot import name 'X' from pywa.types"

  • Run uv sync to update dependencies

  • PyWA version must be >=3.0.0

❌ "401 Unauthorized" from WhatsApp API

  • Verify your WHATSAPP_TOKEN is current and has proper permissions

  • Check token hasn't expired in Meta Developer Console

❌ Claude Desktop doesn't show tools

  • Check claude_desktop_config.json syntax is valid JSON

  • Ensure file paths are absolute, not relative

  • Restart Claude Desktop after config changes

  • Look for 🔨 hammer icon to confirm connection

❌ "Typing indicator failed"

  • indicate_typing requires a valid message ID from an incoming message

  • Cannot use with arbitrary message IDs - must be from actual WhatsApp messages received

Debug Mode

Enable detailed logging by setting environment variable:

export PYTHONPATH=/path/to/pywa-mcp-server LOGLEVEL=DEBUG uv run python server.py

Getting Help

License

MIT

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