Go Fiber Firebase Authentication Example
This example demonstrates how to protect Fiber routes with Firebase Authentication by verifying Firebase ID tokens.
Requirements
- A Firebase project with Authentication enabled
- A Google Service Account credential JSON file (download from Firebase Console → Project Settings → Service Accounts)
Setting Up
Copy example.env to .env and set the path to your service account credential file:
GOOGLE_SERVICE_ACCOUNT=path/to/serviceAccountKey.json
Start
go run main.go
Endpoints
| Method | Path | Auth required | Description |
|---|---|---|---|
| GET | /salut | No | Public greeting (French) |
| POST | /ciao | No | Public greeting (Italian) |
| GET | /salanthe | No | Public greeting (Sinhalese) |
| GET | /api/hello | Yes | Protected greeting (English) |
| GET | /api/ayubowan | Yes | Protected greeting with user claims |
curl Examples
Public endpoint
curl http://localhost:3001/salut
Protected endpoint — obtain a Firebase ID token first, then:
curl -H "Authorization: Bearer <YOUR_FIREBASE_ID_TOKEN>" \
http://localhost:3001/api/hello
curl -H "Authorization: Bearer <YOUR_FIREBASE_ID_TOKEN>" \
http://localhost:3001/api/ayubowan
