How do I set the Stripe secret key in Firebase Cloud Functions without a config file?

When you run the command

BASHCopied
firebase functions:config:set stripe.secret=<YOUR STRIPE SECRET KEY>

you're not updating a file in your local project—instead, you're setting a configuration value in your Firebase project. This configuration is stored on Firebase’s servers and is accessed by your functions at runtime using the functions configuration APIs (such as using functions.config() or via environment variables if you’re accessing them as part of a secret setup).

Key points:

• No Local Config File:
  There isn’t any file in your project that reflects these settings. They’re managed by Firebase and aren’t part of your source code.

• Accessing the Config:
  In your Cloud Functions code, you can access the Stripe secret via the Firebase functions config. For example:

  JSCopied
  const functions = require('firebase-functions/v1');
  const stripeSecret = functions.config().stripe.secret;

  This will pull the secret from the configuration you’ve set using the CLI.

• Local Development:
  If you want to simulate this behavior locally or inspect your configuration, you can run:

  BASHCopied
  firebase functions:config:get

  This command returns your project's configuration as JSON.
  Additionally, with the Cloud Functions emulator, you can override configuration using local files (like .env.local or similar) if you want to keep things consistent on your development machine.

So, there’s no file to update in your functions directory—the CLI command handles storing the configuration in Firebase, and your functions automatically have access to the values at runtime.