Tripletex
Missing support for attachments or metadata
While APIs like Fiken allow for attachments and Stripe allow for general metadata arrays Trippeltex does not allow for anything like this attached to invoices which makes it a big hassle to work with. Instead of letting your accounting system be a source of truth it will require extra handling of data outside of the system.
Attaching documents to existing orders can be done via PUT /v2/order/{id}/:attach in the order section. For document handling in general there are several endpoints for handling this depending on what the document is associated with, see for example the documentArchive section.
If what you are looking for is the possibility to attach arbitrary data to arbitrary objects then no, we don't support that.
On a sidenote, the link for Stripe goes nowhere.
