Environment Variables

Securely store API keys, secrets, and configuration values that your build and runtime need.

Adding variables

Go to your application, then Deploy → Environment Variables. Click Add Variable, enter a name and value, and save.

Variable types

• Plain text — visible in the dashboard and build logs
• Secret — encrypted at rest, never shown after saving

Accessing variables in your app

// Server-only variable (never exposed to the browser)
const apiKey = process.env.API_SECRET_KEY
// Public variable — prefix with NEXT_PUBLIC_ to expose to the client
const publicUrl = process.env.NEXT_PUBLIC_APP_URL

Limits by plan