callable-functions

Firebase SDK for Cloud Functions Quickstart - Callable Functions

This quickstart demonstrates how to send requests to a server-side function and get a response back using one of the Client SDKs.

Introduction

The function addNumbers Returns the sum of two numbers.

Further reading:

• Read more about Cloud Functions for Firebase

Deploy the app to prod

First you need to get the dart dependencies of the functions:

dart pub get

Deploy to Firebase using the following command:

firebase deploy --only functions

License

© Google, 2026. Licensed under an Apache-2 license.