Harmon Storefront APIBuild your storefront on Harmon

A public, machine-authenticated commerce API. Read the catalog, price a cart, place an order - in minutes.

Quickstart

API Reference

Read the catalog

Products, categories, tags, pricing, coarse availability and vehicle fitment - anonymous, cacheable, ETag-aware.

Cart → checkout

Build a cart, price it, and place an order over the ECOMMERCE channel with a shopper token.

Built for merchants

Merchant-scoped API keys, sandbox by default, and LLM-native artifacts so an assistant can ingest the whole API.

New here? Start with the Quickstart - your first API call in five minutes - then browse the Guides. The interactive API reference and the recipes cookbook arrive in later phases.