The other locked template
Invoice PDF API
Same mill, second template. POST invoice JSON. Get application/pdf. Amounts are integer cents. Tax is whatever you send.
Slipmill’s invoice template is a branded invoice PDF, not a commercial invoice for customs and not a tax engine. You send line amounts, optional tax, and a total in integer cents. We print the numbers you posted.
We do not compute VAT, sales tax, or duties. We do not emit a customs commercial invoice. If you need those, calculate them in your system and send the cents.
Use template invoice on POST /v1/render. Same key, same fail-closed rules as packing slips.