Supabase Edge Functions

Globally distributed TypeScript serverless functions, deployed in seconds.

Supabase Edge Functions let you run server-side TypeScript code at the edge, close to your users. Built on the open source Deno runtime, they integrate seamlessly with the rest of the Supabase platform: database, auth, storage, and realtime.

Key Features

• Global deployment: functions run at the edge worldwide for low latency
• TypeScript-first: write in TypeScript with full type checking and autocompletion
• Node.js compatible: supports Node.js APIs and 2M+ NPM modules
• Zero configuration: pre-populated environment variables for accessing your Supabase project (database, auth, storage)
• Database webhooks: trigger functions automatically on table INSERT, UPDATE, or DELETE events
• Regional invocation: optionally pin functions to run near your database for lower DB latency
• Built-in observability: real-time log streaming, SQL-queryable Log Explorer, and metrics dashboards
• CI/CD: deploy via Supabase CLI with GitHub Actions support
• Local development: hot code reloading, Language Server for autocompletion, same runtime locally and in production

Technical Details

• Runtime: Deno (open source, V8-based)
• Languages: TypeScript, JavaScript
• NPM support: 2M+ modules via npm: specifiers
• Scaling: automatic, no manual tuning
• Security: SSL, Firewall, DDoS protection built in
• Open source: same Edge Runtime runs locally and in production, no vendor lock-in

Common Use Cases

• Webhook handlers (Stripe, GitHub, Twilio)
• Server-side API routes and middleware
• Scheduled tasks (via pg_cron + database webhooks)
• AI/ML inference endpoints
• Email and notification sending
• Third-party API integrations

Links

• Documentation: https://supabase.com/docs/guides/functions
• API Reference: https://supabase.com/docs/reference/javascript/functions-invoke
• Dashboard: https://supabase.com/dashboard