# API Lab (2026-07-21)

> Interactive, runnable walkthroughs for the Kintsugi API.

Source: https://docs.trykintsugi.com/docs/2026-07-21/recipes

Each recipe is a hands-on walkthrough of a common Kintsugi workflow. Open one to
step through the calls, edit the requests, and see the responses.

Estimate Tax

Calculate tax for a transaction before you commit it, using live inputs for addresses, products, and exemptions.

Open API Lab →

Managing Products

Create products, fetch categories, and retrieve product details so items are classified correctly for tax.

Open API Lab →

Managing Customers

Create customer records and look them up. The foundation for exemptions and customer-level reporting.

Open API Lab →

Creating Transactions

Record completed sales and retrieve them, keeping your compliance data in sync with every order.

Open API Lab →

Creating Credit Notes

Issue credit notes for refunds and returns so your sales records stay accurate.

Open API Lab →

Managing Nexus

Create physical nexus and registrations, then confirm where your business has tax obligations.

Open API Lab →

---

Index of every page: https://docs.trykintsugi.com/llms.txt