Deploy a Supabase Edge Function with the Supabase CLI
domain: supabase.com · 8 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Install and configure the Supabase CLI according to https://supabase.com/docs/guides/local-development.
Run 'supabase login' to authenticate, then 'supabase link --project-ref <YOUR_PROJECT_ID>' to link the project (find the ref via 'supabase projects list').
Create a function: 'supabase functions new hello-world' generates supabase/functions/hello-world/index.ts (a Deno/TypeScript handler).
Test locally with 'supabase functions serve hello-world' (requires Docker; runs at http://127.0.0.1:54321/functions/v1/hello-world with hot reload).
Deploy one or all: 'supabase functions deploy hello-world' or 'supabase functions deploy' to deploy all functions.
If Docker is unavailable the CLI auto-falls back to API-based deployment; force it with 'supabase functions deploy <name> --use-api'.
Your function is then live at https://<project-ref>.supabase.co/functions/v1/hello-world.
Official docs: https://supabase.com/docs/guides/functions/quickstart; https://supabase.com/docs/guides/functions
Known gotchas
Edge Functions only support TypeScript on the Deno runtime - not Node.js.
Local testing requires Docker (or a compatible runtime); production deployment can work without it via the API fallback.
Only one function can be deployed concurrently per project - wait for the current deploy to finish before starting another.
The default template embeds an expected apikey header for auth; manage auth requirements when editing the function.
Deployment is free but subject to per-project concurrency and bundle-size limits; very large bundles may be rejected.
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