Twilio SMS Routing with Modal

This repository contains two Python scripts, route_sms.py and send_sms.py, that demonstrate how to utilize the Twilio API for SMS services in conjunction with the Modal platform.

Overview

The Python scripts in this repository create a Modal cloud instance of a Flask application that interacts with the Twilio API to send and route SMS messages.

• route_sms.py is a Flask application that receives incoming SMS messages, verifies the sender, and forwards the messages to a distribution group if the sender is recognized as an admin. This application runs on a Modal cloud instance, offering scalability and simplicity of deployment.

• send_sms.py is a script that sends a test SMS to an admin phone number. This script also runs on a Modal cloud instance, demonstrating the simplicity of remote code execution.

Prerequisites

To use these scripts, you'll need:

• A Modal account. If you don't have one, you can create one at modal.com.
• The modal-client package installed.
• A Twilio account with a valid account SID and auth token.
• An admin phone number and a Twilio phone number.

Usage

1. Clone the repository to your local machine.
2. Load your environment variables.
3. Run the send_sms.py script to send a test SMS.
4. Deploy the route_sms.py script as a Flask app on a Modal cloud instance to handle incoming SMS.

Disclaimer

Please ensure that you understand the implications of sending and forwarding SMS messages, including any costs associated with using the Twilio API.

Acknowledgments

• Twilio API
• Modal Platform
• Flask