Firebase SDK for Cloud Functions Quickstart - HTTPS trigger

This quickstart demonstrates using the Firebase SDK for Cloud Functions with an HTTPS trigger through building an endpoint returning the current time.


The function date returns the current server date. You can pass it a format URL Query parameter to format the date.

Further reading:

Initial setup, build tools and dependencies

1. Clone this repo

Clone or download this repo and open the quickstarts/time-server directory.

2. Create a Firebase project and configure the quickstart

Create a Firebase Project on the Firebase Console.

Set up your Firebase project by running firebase use --add, select your Project ID and follow the instructions.

3. Install the Firebase CLI and enable Functions on your Firebase CLI

You need to have installed the Firebase CLI. If you haven't run:

npm install -g firebase-tools

Doesn't work? You may need to change npm permissions.

Deploy the app to prod

First you need to install the npm dependencies of the functions:

cd functions && npm install; cd ..

This installs locally:

  • The Firebase SDK and the Firebase Functions SDK.
  • The moment npm package to format time.
  • The cors npm package to allow Cross Origin AJAX requests on the endpoint.

Deploy to Firebase using the following command:

firebase deploy

This deploys and activates the date Function.

The first time you call firebase deploy on a new project with Functions will take longer than usual.

Try the sample

After deploying the function you can open the following URLs in your browser:



You can also send the format in the request body. For instance using cURL in the command line:

curl -H 'Content-Type: application/json' /
     -d '{"format": "MMMM Do YYYY, h:mm:ss a"}' /

Formatted dates should be displayed.

We are responding with a 403 error in case of PUT requests:

curl -X PUT -d '{"format": "MMMM Do YYYY, h:mm:ss a"}' https://us-central1-<project-id>


We'd love that you contribute to the project. Before doing so please read our Contributor guide.


© Google, 2016. Licensed under an Apache-2 license.