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The Komerza API is a REST interface to everything in your store. Anything you can do in the dashboard, you can automate: manage your catalogue, read and fulfil orders, issue refunds, look after customers, run coupons and affiliates, and receive events on your own server.

Make your first call

Create a key, find your store ID and get a real response back, in three steps.

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What you can build

Catalogue tools

Sync products, variants, pricing and stock from wherever you already manage them.

Order automation

Read orders, deliver them, issue refunds, and push status into your own systems.

Custom storefronts

Drive checkout from a site you build yourself, with your own design.

Back-office integrations

Feed orders and customers into accounting, CRM, fulfilment or analytics.

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Start here

Authentication

API keys, required headers and scopes.

Responses & Errors

The response envelope, list responses and how failures look.

Conventions

IDs, dates, enums, money and store scoping.

Filtering & Sorting

Narrow, order and page through list endpoints.

SDKs

Official libraries for .NET, JavaScript, Python, Go and PHP.

Store Webhooks

Order events pushed to your server, instead of polling for them.

Storefront SDK

Cart and checkout on a site you host yourself.

System status

Live API availability.
Last modified on August 2, 2026