Edge Functions

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What are Supabase Edge Functions?

Edge Functions run on Supabase infrastructure and handle secure backend logic for your app. They are ideal for tasks like sending emails, calling APIs, generating PDFs, or processing data.

• Execute on the server, not the user’s device.
• Can store and use secrets securely.
• Can be triggered from your UI or backend processes.

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Create or detect a function in Rocket

Rocket auto-checks if backend logic is needed when you build features. If a function is required and does not exist, Rocket generates it and opens a chat popup. You will see:

• The function name and a code preview.
• Input fields for any required secrets.
• A Push to Supabase button to deploy.

You can also ask Rocket to create a function manually. For example:

“Create an Edge Function that sends a welcome email with Resend when a user signs up.”

Rocket will:

• Write the function code.
• Prompt for the RESEND_API_KEY.

• Show a Push to Supabase popup so you can deploy the function.

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View functions and secrets in Supabase

To review deployed functions or confirm stored secrets, use the Supabase dashboard. View deployed functions: View stored secrets:

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Add secrets securely

When Rocket asks for secrets:

• Paste them into the secure input fields provided.
• The secrets are saved in Supabase, not Rocket.
• You can update or rotate them later by asking Rocket to redeploy.

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Call your function from the app

Once deployed, Rocket can automatically wire your function into your app. You can also ask for specific triggers, such as:

• After user actions like signups or button clicks.
• From other backend processes.

To test first, ask Rocket to add a test button that triggers the function safely during development.

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Example: Send a welcome email

Prompt:

“Send a welcome email using Resend when a new user signs up.”

Rocket will:

• Generate the function.
• Request the RESEND_API_KEY.
• Show a Push to Supabase popup.
• Connect the function to your signup flow.

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Troubleshooting

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1. Function not found

To fix this:

1. Rocket shows an error popup with a Fix it button.
2. Click Fix it. Rocket will check the issue and either:
   • Repair the function and show a Push to Supabase popup.
   • Generate a script to deploy if schema changes are needed.
3. If the function exists but does not behave as expected, describe the problem clearly in chat. For example:

“When users sign up, they are not receiving the welcome email.”

Rocket will inspect, apply changes, and prompt you to redeploy.

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2. Push to Supabase failed

To fix this:

1. Review the error message shown in the popup.
2. If a Fix it button is available, click it. Rocket will:
   • Fix the function.
   • Show a new Push to Supabase popup so you can retry.
3. Push the updated function or script as prompted.