Register FCM Token

curl --request POST \
  --url http://localhost:3000/api/notifications/register-fcm-token \
  --header 'Content-Type: application/json' \
  --data '
{
  "token": "ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]",
  "deviceId": "device_abc123",
  "platform": "ios"
}
'

import requests

url = "http://localhost:3000/api/notifications/register-fcm-token"

payload = {
    "token": "ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]",
    "deviceId": "device_abc123",
    "platform": "ios"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    token: 'ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]',
    deviceId: 'device_abc123',
    platform: 'ios'
  })
};

fetch('http://localhost:3000/api/notifications/register-fcm-token', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_PORT => "3000",
  CURLOPT_URL => "http://localhost:3000/api/notifications/register-fcm-token",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'token' => 'ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]',
    'deviceId' => 'device_abc123',
    'platform' => 'ios'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "http://localhost:3000/api/notifications/register-fcm-token"

	payload := strings.NewReader("{\n  \"token\": \"ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]\",\n  \"deviceId\": \"device_abc123\",\n  \"platform\": \"ios\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("http://localhost:3000/api/notifications/register-fcm-token")
  .header("Content-Type", "application/json")
  .body("{\n  \"token\": \"ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]\",\n  \"deviceId\": \"device_abc123\",\n  \"platform\": \"ios\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("http://localhost:3000/api/notifications/register-fcm-token")

http = Net::HTTP.new(url.host, url.port)

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"token\": \"ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]\",\n  \"deviceId\": \"device_abc123\",\n  \"platform\": \"ios\"\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "message": "FCM token registered successfully"
}

{
  "message": "<string>"
}

{
  "message": "<string>"
}

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

import requests

url = "http://localhost:3000/api/notifications/register-fcm-token"

payload = {
    "token": "ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]",
    "deviceId": "device_abc123",
    "platform": "ios"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    token: 'ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]',
    deviceId: 'device_abc123',
    platform: 'ios'
  })
};

fetch('http://localhost:3000/api/notifications/register-fcm-token', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_PORT => "3000",
  CURLOPT_URL => "http://localhost:3000/api/notifications/register-fcm-token",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'token' => 'ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]',
    'deviceId' => 'device_abc123',
    'platform' => 'ios'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "http://localhost:3000/api/notifications/register-fcm-token"

	payload := strings.NewReader("{\n  \"token\": \"ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]\",\n  \"deviceId\": \"device_abc123\",\n  \"platform\": \"ios\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("http://localhost:3000/api/notifications/register-fcm-token")
  .header("Content-Type", "application/json")
  .body("{\n  \"token\": \"ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]\",\n  \"deviceId\": \"device_abc123\",\n  \"platform\": \"ios\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("http://localhost:3000/api/notifications/register-fcm-token")

http = Net::HTTP.new(url.host, url.port)

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"token\": \"ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]\",\n  \"deviceId\": \"device_abc123\",\n  \"platform\": \"ios\"\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "message": "FCM token registered successfully"
}

{
  "message": "<string>"
}

{
  "message": "<string>"
}

Endpoints

Register FCM Token

Overview

Use Cases

Important Notes

Example Usage

React Native/Expo

See Also

Body

Response

​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