Supabase Edge Functions Has a Free API You Should Know About

Supabase Edge Functions are globally distributed TypeScript functions powered by Deno. They run close to your users and integrate seamlessly with Supabase's database, auth, and storage.

Why Edge Functions Complete Supabase

A developer using Supabase needed custom server logic — webhook processing, third-party API calls, data transformations. Instead of deploying a separate backend, Edge Functions run right alongside their Supabase project.

Key Features:

• Deno Runtime — Modern TypeScript/JavaScript runtime
• Global Distribution — Run at the edge near users
• Supabase Integration — Direct access to database, auth, storage
• No Cold Starts — Warm instances for fast response
• Free Tier — 500K invocations/month

Quick Start

supabase functions new hello-world

// supabase/functions/hello-world/index.ts
import { serve } from "https://deno.land/std/http/server.ts"
import { createClient } from "https://esm.sh/@supabase/supabase-js"

serve(async (req) => {
  const supabase = createClient(
    Deno.env.get("SUPABASE_URL")!,
    Deno.env.get("SUPABASE_SERVICE_ROLE_KEY")!
  )

  const { data } = await supabase.from("users").select("*").limit(10)
  return new Response(JSON.stringify(data), {
    headers: { "Content-Type": "application/json" }
  })
})

supabase functions deploy hello-world

Why Choose Supabase Edge Functions

1. Supabase-native — direct DB/auth/storage access
2. Deno — modern runtime, no node_modules
3. Global — runs at the edge

Check out Edge Functions docs to get started.

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