This is the open-source version of the integration that you can find in our website.
On the website, you can quickly connect your Stripe and Settle Up account and it's done.
To install this version, you have to deploy it as a Firebase Cloud Function (or any server that you own), set the config variables to yours, create a bot account that adds the transactions, and add that bot account to your group through the Settle Up app (or the sandbox version if you are testing).
Refer to Settle Up's API and Stripe's API for more information