Twilio

official

Interact with Twilio APIs to send messages, manage phone numbers, configure your account, and more.

GitHub
108

What can you do with Twilio MCP?

  • Send SMS and WhatsApp messages — Ask your assistant to compose and send messages via Twilio's messaging APIs.
  • Make and manage phone calls — Initiate outbound calls, track call status, or modify live calls through the Twilio Voice API.
  • Look up phone numbers — Retrieve carrier and caller name information for any phone number using Twilio Lookup.
  • Buy and configure phone numbers — Search for available numbers and provision them in your account via the phone number APIs.
  • Filter exposed APIs by service — Use the --services and --tags flags to limit which Twilio APIs are available to the assistant, reducing context size.

Documentation

Twilio AlphaTwilio Alpha

Twilio MCP Monorepo

This is a monorepo for the Model Context Protocol server that exposes all of Twilio APIs.

What is MCP?

The Model Context Protocol (MCP) is a protocol for exchanging model context information between AI tools and services. This implementation allows you to expose Twilio's APIs to AI assistants and other tools that support the MCP protocol.

Packages

This monorepo contains two main packages:

  • mcp - MCP Server for all of Twilio's Public API
  • openapi-mcp-server - An MCP server that serves the given OpenAPI spec

Each package has its own comprehensive README with detailed documentation:

Quick Start

The easiest way to get started is by using npx:

{
  "mcpServers": {
    "twilio": {
      "command": "npx",
      "args": [
        "-y",
        "@twilio-alpha/mcp",
        "YOUR_ACCOUNT_SID/YOUR_API_KEY:YOUR_API_SECRET"
      ]
    }
  }
}

Visit Twilio API Keys docs for information on how to find/create your API Key and Secret.

Security Recommendations

To guard against injection attacks that may allow untrusted systems access to your Twilio data, the ETI team advises users of Twilio MCP servers to avoid installing or running any community MCP servers alongside our official ones. Doing so helps ensure that only trusted MCP servers have access to tools interacting with your Twilio account, reducing the risk of unauthorized data access.

Basic Configuration Options

Both packages accept configuration parameters. Here's a brief overview:

  • MCP Server: Use --services and --tags to filter which APIs to expose
  • OpenAPI MCP Server: Use --apiPath to specify OpenAPI spec files location

For complete configuration details, refer to the package-specific documentation linked above.

Development

# Run tests
npm test

# Run linting
npm run lint

# Fix linting issues
npm run lint:fix

Troubleshooting Common Issues

  • Context Size Limitations: Due to LLM context limits, load specific APIs using --services or --tags
  • Authentication Issues: Verify your Twilio API credentials format and permissions
  • API Versioning: Check you're using the correct API version (v1, v2, v3) for your needs

For detailed troubleshooting guidance, see the package-specific documentation.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is licensed under the ISC License - see the LICENSE file for details.