BillOS API Reference

BillOS is a bookkeeping service registered with the Israel Tax Authority (רשות המסים) software registry. It issues legally valid Israeli tax documents (tax invoices, invoice/receipts, receipts, credit notes) with gapless numbering, digital signatures, an immutable audit trail, and the regulatory OPENFRMT (מבנה אחיד) export. Your app talks to it over a simple JSON HTTP API; BillOS takes care of the compliance.

Base URL: https://api.billos.co.il/v1

The original address, /api/books/v1 on the PestOS API host, keeps answering forever: an integration connected against it never has to move. New integrations use the base URL above.

This document is the complete consumer reference. Every example is a runnable curl. And the console shows everything under your key (businesses, traffic, webhook deliveries) with the key itself as the sign-in.