← flaviocopes.com

How to use environment variables in Netlify functions

Updated Apr 21 2022

Psssst! The 2023 WEB DEVELOPMENT BOOTCAMP is starting on FEBRUARY 01, 2023! SIGNUPS ARE NOW OPEN to this 10-weeks cohort course. Learn the fundamentals, HTML, CSS, JS, Tailwind, React, Next.js and much more! ✨

To use environment variables in your Netlify Functions, access the process.env variable:


You can use object destructuring at the beginning of your JS file, to make the code nicer:

const { YOUR_VARIABLE } = process.env;

so you can just use YOUR_VARIABLE in the rest of the program.

You set the variables through the Netlify administration interface (you can also add them in your repo, but I’d recommend using the Netlify UI so you have no secrets in your Git repository).

Note: this does not work on Netlify Edge Functions, just on Netlify “regular” Functions that run on AWS Lambda.

For Netlify Edge Functions, you need to use Deno.env.get(), like this:



export default () => new Response(Deno.env.get('YOUR_VARIABLE'))

I write books for developers 👇🏼

© 2023 Flavio Copes Flavio Copes made in Italy 🇮🇹 using Notion to Site Notion to Site