Register FCM Token

Overview

Registers a Firebase Cloud Messaging (FCM) token for push notifications on mobile devices. This endpoint should be called when:

User logs in on a mobile device
App starts and user is already logged in
FCM token is refreshed

Use Cases

Mobile App Login: Register device for push notifications after successful login
App Startup: Re-register token when app starts with authenticated user
Token Refresh: Update token if FCM token changes (rare but possible)

Important Notes

Each device needs a unique deviceId. Use a persistent identifier like Device.deviceId in React Native/Expo.

Users can have multiple registered devices (iPhone, iPad, Android tablet). All devices will receive push notifications.

Example Usage

React Native/Expo

import * as Notifications from "expo-notifications";
import * as Device from "expo-device";
import { Platform } from "react-native";

// Request permissions and get token
const { status } = await Notifications.requestPermissionsAsync();
if (status !== "granted") {
  console.log("Permission not granted");
  return;
}

const token = (await Notifications.getExpoPushTokenAsync()).data;

// Register with backend
await fetch("/api/notifications/register-fcm-token", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    token,
    deviceId: Device.deviceId,
    platform: Platform.OS,
  }),
});

Remove FCM Token - Remove token on logout
Update FCM Token Usage - Track active devices

Endpoints

Register FCM Token

Overview

Use Cases

Important Notes

Example Usage

React Native/Expo

See Also

Body

Response

Endpoints

​Overview

​Use Cases

​Important Notes

​Example Usage

​React Native/Expo

​Related Endpoints

​See Also

Body

Response

Overview

Use Cases

Important Notes

Example Usage

React Native/Expo

Related Endpoints

See Also