Discover how to set up Firebase App Check for stronger security, protecting your app from abuse and ensuring only real users access your Firebase services.
Firebase App Check boosts the security of your Firebase app by making sure only your app taps into backend resources. To get started, set up your app's credentials, bring in the App Check SDK, and tweak your backend to verify the App Check tokens. You'll choose an attestation provider such as reCAPTCHA, SafetyNet, or DeviceCheck. After that, add the required dependencies, get App Check up and running in your client app, then update Firebase services to enforce the App Check verification.
Head over to the Firebase Console Firebase Console.
In the Firebase Console, pick the project you want to enable App Check for.
On the left sidebar, find and click the "App Check" tab under the “Build” section.
Click “Get Started” if you see it. Then, select the app you want to protect from the list (e.g., Android, iOS, Web).
Pick the App Check provider. For example:
Follow the instructions based on your provider:
Add the App Check SDK to your app’s code. Here’s an example for a web app:
// Import the App Check package
import { initializeAppCheck, ReCaptchaV3Provider } from "firebase/app-check";
// Initialize App Check
const appCheck = initializeAppCheck(firebaseApp, {
provider: new ReCaptchaV3Provider('YOUR_RECAPTCHA_KEY'),
isTokenAutoRefreshEnabled: true // Optionally enable automatic token refresh
});
Don’t forget to replace ‘YOUR_RECAPTCHA_KEY’ with your actual key.
Go back to the Firebase Console and return to the App Check configuration page. Turn on enforcement mode for each service you want to protect, like Firestore, Realtime Database, or Cloud Functions.
Test your app to make sure it works fine with App Check enabled. If everything looks good, go ahead and deploy your app.
After deploying, use the Firebase Console to keep an eye on App Check metrics. Make sure your app isn’t getting too many rejections, which could mean there’s an issue with real users.
Explore our Firebase tutorials directory - an essential resource for learning how to create, deploy and manage robust server-side applications with ease and efficiency.
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