Actually, we support pushing data as well! We have a few users with a similar use case, who push journal entries and invoices from their apps to Quickbooks/Sage/Xero, etc.
I will be using this if this is the case and we can make sales, and refund receipts and add links to invoices.
How much data can we update or pull. Quickbooks has a lot of quarks.
As mentioned in our post, all of our connectors are open source and built on Python, so our engineers regularly add support for new endpoints as users request them.