Development — entry 031 of 100
Google Firebase
Firebase is Google's app-development platform, not a single API — it bundles a family of REST-accessible services including the Realtime Database, Cloud Firestore, Cloud Messaging (FCM) for push notifications, and Cloud Storage, alongside SDK-only products like Authentication and Crashlytics. Client apps authenticate with a per-project `apiKey` embedded in the SDK config, while server-side and admin access uses service-account credentials or OAuth 2.0. Firebase runs on a free Spark tier with capped daily quotas, and a pay-as-you-go Blaze tier for production-scale usage billed through Google Cloud.
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSEnabledCallable directly from browser JavaScript.
PricingFreemiumA usable free tier exists, with paid plans for more volume.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score61
Authentication15/25API key required
Pricing17/20Freemium tier available
Docs0/20No docs or spec available
Formats9/15Single response format
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/google-firebase/"><img src="https://greatapis.com/badge/google-firebase.svg" alt="Scored 61 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.