Twilio API Emulator

Stateful Twilio REST emulation with seeded accounts, Auth Tokens, API keys, incoming phone numbers, Programmable Messaging, Messaging Services, Verify, basic Voice calls, Conversations REST resources, signed webhooks, local simulator routes, and an inspector.

Start

npx emulate --service twilio

Default URL: http://localhost:4013 when all services are started, or http://localhost:4000 when Twilio is the only service.

Defaults