The HTTPS Callable functions Quickstart demonstrates how to send requests to a server-side function and get a response back using one of the Client SDKs. It interoperates with the Web, iOS and Android quickstarts.

Read more about Cloud Functions for Firebase

1. Install dependencies with npm install and deploy with firebase deploy --only functions
2. Set up a client (import the functions client SDK, initializeApp, init the functions sdk)
3. Call the function

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