Twilio WhatsApp FastMCP Server 💬

This project provides a simple FastMCP server that allows sending WhatsApp messages using the Twilio API.

Features

• 📲 Sends WhatsApp messages via Twilio.
• 🤖 Exposes a send_whatsapp tool for use with FastMCP clients (like AI models).
• 🔒 Loads configuration securely from a .env file.
• 🧪 Includes a basic test script (/home/rj/Code/mcp-generated/twilio_test.py) for direct Twilio API interaction.

Setup

1. Get the Code: Clone this repository or download the source files into /home/rj/Code/mcp-generated/.

2. **Create a Virtual Environment (Recommended){ @@ -77,11 +77,11 @@

2. Running the Test Script

-The /home/rj/Code/mcp-generated/twilio_test.py script provides a way to directly test sending a message using your Twilio credentials without the FastMCP server. +The /home/rj/Code/mcp-generated/twilio_test.py script provides a way to directly test sending a message using your Twilio credentials without the FastMCP server. 🛠️

• Modify the script: Ensure the to= number in /home/rj/Code/mcp-generated/twilio_test.py is a WhatsApp number linked to your Twilio Sandbox (if using the Sandbox) or any valid WhatsApp number (if using a purchased Twilio number). The from_ number should typically be your Twilio Sandbox number (whatsapp:+14155238886) or your purchased Twilio WhatsApp number.
• Run the script:
• ```bash
• bash ▶️ python /home/rj/Code/mcp-generated/twilio_test.py This will attempt to send a hardcoded message ("Is this working?") from the specified Twilio number to the specified recipient.

:** bash 🌱 cd /home/rj/Code/mcp-generated/ python -m venv venv source venv/bin/activate # On Windows use `venv\Scripts\activate`

1. Install Dependencies: The necessary dependencies are listed in /home/rj/Code/mcp-generated/whatsapp_server.py. You can install them using pip: bash 📦 pip install twilio python-dotenv pydantic-settings fastmcp Alternatively, if using the FastMCP framework features: bash fastmcp install /home/rj/Code/mcp-generated/whatsapp_server.py

2. Configure Environment Variables:

   • Sign up for a Twilio account if you don't have one.
   • Get your Account SID and Auth Token from the Twilio Console.
   • Set up the Twilio Sandbox for WhatsApp or configure a dedicated Twilio WhatsApp number.
   • Create a file named .env in the project root directory (/home/rj/Code/mcp-generated/).
   • Add your Twilio credentials and WhatsApp number to the .env file: 🔑 dotenv # /home/rj/Code/mcp-generated/.env TWILIO_ACCOUNT_SID=ACxxxxxxxxxxxxxxxxxxxxxxxxxxxxx TWILIO_AUTH_TOKEN=your_auth_token_here TWILIO_WHATSAPP_NUMBER=+14155238886 # Use your Twilio WhatsApp number (Sandbox or purchased)
   • Important: Replace the placeholder values with your actual credentials and number. Ensure the TWILIO_WHATSAPP_NUMBER starts with a + and includes the country code (E.164 format). The whatsapp_server.py script will automatically add the + if it's missing from the .env file. ❗
   • Trial Account Note: If you are using a Twilio trial account, the TWILIO_WHATSAPP_NUMBER will likely be the Twilio Sandbox number (+14155238886). You must enroll any recipient (to_number) phone numbers in your Twilio Sandbox via the Twilio console for messages to be delivered successfully. Sending to non-enrolled numbers requires upgrading your Twilio account.

Usage

1. Running the FastMCP Server

To make the send_whatsapp tool available for remote calls (e.g., from an AI model integrated with FastMCP):

```bash ▶️ python /home/rj/Code/mcp-generated/whatsapp_server.py

The server will start and print the Twilio number it's configured to use. It will listen for incoming requests (by default via stdio, but FastMCP supports other transports). A FastMCP client can then call the `send_whatsapp` tool with `to_number` (including the `whatsapp:` prefix, e.g., `whatsapp:+15551234567`) and `message` arguments.

**Example Interaction (Conceptual):**

A client (like an AI 🤖) might send a request like this (format depends on the transport):

```json
{
  "tool_name": "send_whatsapp",
  "arguments": {
    "to_number": "whatsapp:+15551234567",
    "message": "Hello from the FastMCP server!"
  }
}

The server will process this, call the Twilio API, and return a confirmation or error message.

2. Running the Test Script

The /home/rj/Code/mcp-generated/twilio_test.py script provides a way to directly test sending a message using your Twilio credentials without the FastMCP server. 🛠️

• Modify the script: Ensure the to= number in /home/rj/Code/mcp-generated/twilio_test.py is a WhatsApp number linked to your Twilio Sandbox (if using the Sandbox) or any valid WhatsApp number (if using a purchased Twilio number). The from_ number should typically be your Twilio Sandbox number (whatsapp:+14155238886) or your purchased Twilio WhatsApp number.
• Run the script: bash ▶️ python /home/rj/Code/mcp-generated/twilio_test.py This will attempt to send a hardcoded message ("Is this working?") from the specified Twilio number to the specified recipient.