We had a simple ordering process that creates invoices using Xero's API - however they stopped supporting OAUTH1 and now only support version 2. Frontend is VueJS, backend is Python, however I am not sure what language is needed for the Xero API.
Hi there. Thanks for your invitation and Hope you are doing well.
I read your description and I am very interested in it because I have done it before.
Let's discuss in details via chat.
Thanks.