How to send push notifications with FastAPI
Updated on March 29, 2026
Learn how to send Signalgrid push notifications
Signalgrid makes it straightforward to send notifications from FastAPI. The platform uses a simple model built around your client_key, a target channel, and a few core fields such as title, body, type, and optional critical.
FastAPI is a good fit for service-to-service workflows, webhook processing, and backend APIs that need to notify people when something changes.
What you need
- A Signalgrid account
- Your client key
- A channel token
- FastAPI available in your environment
Basic example
The following example sends a simple notification with FastAPI.
import os
import requests
from fastapi import FastAPI
app = FastAPI()
@app.post("/notify")
def notify():
response = requests.post(
"https://api.signalgrid.co/v1/push",
data={
"client_key": os.getenv("SIGNALGRID_CLIENT_KEY"),
"channel": os.getenv("SIGNALGRID_CHANNEL"),
"title": "FastAPI Event",
"body": "A FastAPI endpoint triggered a notification.",
"type": "INFO",
},
)
return response.json()Required fields
Field
Description
client_keyAuthenticates the request on behalf of your Signalgrid user
channelThe channel token that should receive the notification
titleShort notification title
bodyMain notification message
typeVisual notification type such as
INFO, WARN, SUCCESS, or CRITcriticalOptional flag for urgent notifications
Environment variables
Keeping credentials outside your code is usually the better move.
export SIGNALGRID_CLIENT_KEY=your_client_key
export SIGNALGRID_CHANNEL=your_channel_tokenExample: Async APIs and Internal Tools
FastAPI is a good fit for service-to-service workflows, webhook processing, and backend APIs that need to notify people when something changes.