Twilio CLI reference for managing Twilio resources from the terminal. Covers installation, credential profiles, phone number provisioning, sending SMS and email, webhook configuration, local development with a tunneling service, debugging with watch and logs, serverless deployment, and plugin ecosystem. Use when the developer asks to "just do it", "set this up", "run a command", mentions "CLI", "command line", or "terminal", or when an AI agent can execute a task directly instead of writing application code.