firebase-messaging
FCM/GCM push notification client
Decision gist · record as of 2026-08-14
Yes, if you need to receive FCM notifications in a Python application. The library is actively maintained, has low install friction, carries no known vulnerabilities, and supports modern Python versions. The MIT license imposes no restrictions. Install it only if you are receiving (not sending) notifications and your application is not already running on a supported FCM platform.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Must run inside an asyncio event loop; requires valid Firebase configuration (project ID, app ID, API key, message sender ID).
- Low friction install with four runtime dependencies (aiohttp, cryptography, http-ece, protobuf).
- Actively maintained with recent commits and support for current Python versions (3.9–3.13).
License · maintenance · safety
MIT (permissive) — MIT license permits unrestricted use, modification, and distribution with minimal legal friction.
last release 2025-05-10 (461 days) · last repo commit 2026-06-10 · 14 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 191,754 downloads/mo, #9,876 on PyPI
Alternatives
Verify before relying
from firebase_messaging import FcmPushClient, FcmRegisterConfig
def on_notification(obj, notification, data_message):
pass
fcm_config = FcmRegisterConfig(project_id, app_id, api_key, sender_id)
pc = FcmPushClient(on_notification, fcm_config, None, None)
token = await pc.checkin_or_register()
await pc.start()- Whether credentials persistence across restarts is automatic or requires manual file handling.
- Supported FCM message payload size limits and format constraints.
- Behavior when Firebase credentials expire or become invalid during a listening session.
What it is and what it does
firebase-messaging is a Python client library for receiving push notifications delivered via Firebase Cloud Messaging (FCM) and Google Cloud Messaging (GCM). It handles the subscription handshake, credential management, and asynchronous message delivery to your application—useful when you need to listen for notifications on a backend or desktop Python process rather than on a mobile or web platform.
The library runs inside an asyncio event loop and exposes a callback-based API: you provide a notification handler, Firebase credentials, and configuration, then call start() to begin listening. It manages the underlying HTTP/2 connection to FCM, handles encryption/decryption of incoming messages using http-ece and cryptography, and invokes your callback each time a notification arrives. It is not for sending notifications—use the official Firebase SDK for that.
Use it for
- Receive FCM notifications in a Python backend service or daemon without deploying to Android, iOS, or Web.
- Build a notification relay or aggregator that listens to FCM and forwards messages to other systems.
- Monitor Firebase-sent alerts in a desktop or CLI application running on a developer's machine.
- Integrate FCM message delivery into a Python async framework (e.g., FastAPI, aiohttp) for real-time event handling.
- Test FCM notification flows in a Python test suite or integration environment.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need to receive FCM notifications in a Python application.
The library is actively maintained, has low install friction, carries no known vulnerabilities, and supports modern Python versions. The MIT license imposes no restrictions. Install it only if you are receiving (not sending) notifications and your application is not already running on a supported FCM platform.
Install
firebase-messaging on PyPI
Before you install
Low friction install with four runtime dependencies (aiohttp, cryptography, http-ece, protobuf). Actively maintained with recent commits and support for current Python versions (3.9–3.13).
Must run inside an asyncio event loop; requires valid Firebase configuration (project ID, app ID, API key, message sender ID).
License in practice
MIT license permits unrestricted use, modification, and distribution with minimal legal friction.
Quickstart
from firebase_messaging import FcmPushClient, FcmRegisterConfig
def on_notification(obj, notification, data_message):
pass
fcm_config = FcmRegisterConfig(project_id, app_id, api_key, sender_id)
pc = FcmPushClient(on_notification, fcm_config, None, None)
token = await pc.checkin_or_register()
await pc.start()Verify before relying
- Whether credentials persistence across restarts is automatic or requires manual file handling.
- Supported FCM message payload size limits and format constraints.
- Behavior when Firebase credentials expire or become invalid during a listening session.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.9.0 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 4 packagesaiohttpcryptographyhttp-eceprotobuf |
| Maintenance | Actively maintained 461 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 191,754 / month, #9,876 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Environment :: Other EnvironmentIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.9Topic :: Software Development :: Libraries :: Python Modules |
Evidence: firebase_messaging-0.4.5-py3-none-any.whl
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See also pyfcm · pushbullet.py · fcm-django · exponent-server-sdk · django-push-notifications · Farama-Notifications · pypushdeer · firebase-functions · pubnub · pushover-complete