Shopify stores a harmonized system code on each product so Markets can estimate duties and fill customs forms. Jstars classifies CA · US · CN codes with GRI rationale, then syncs filing-ready values back to your catalog.
Start with Instant Lookup for one SKU, run a free store audit for catalog gaps, or connect Shopify with read-only OAuth for sync. Jstars targets the product customs / harmonizedSystemCode fields your Markets workflow already uses.
In Shopify, an HS code is the tariff number attached to a product for international shipping and duty calculation. Jstars Pass 0 checks a local tariff database first; when facts are thin, GRI-aligned AI reasoning fills the gap with visible rationale.
Review confidence labels, bulk-classify missing products, and export broker-ready CSVs. The Free plan includes 20 classifications every month so you can keep catalogs customs-ready as you add SKUs.
Deterministic tariff DB hits keep latency low and reduce model spend. LLM passes apply World Customs Organization General Rules of Interpretation when the catalog needs judgment.