Function Dev

You'll use it when you need backend logic like webhooks, scheduled jobs, or authenticated API endpoints. The guide is thorough on the critical stuff: the handler always returns a Web API Response object (not a plain JSON object, which will fail), database queries go through a parameterized RLS-aware client, and there are three trigger types (HTTP with configurable auth, cron with timezone support, and websocket events). It includes real examples for common patterns like webhook signature validation, nightly cleanup jobs, and external API proxying with environment variables. Good reference if you're building anything beyond a static frontend.