List india gst product hsn
The store’s HSN/SAC classifications: which code and which GST rate each product is taxed under. Rates are BASIS POINTS, so 12% is 1200. A PRODUCT WITH NO ROW HERE IS NORMAL. The invoice generator falls back to HSN 9999 at the supplier’s default_rate_bps, so most catalogues carry rows for a minority of products and the absence is a configuration rather than a gap. THERE IS NO GET BY PRODUCT because ?product_id= answers the same question better. “Is this product classified” returns an empty page when it is not, which is the correct answer; a 404 would be an error status for the ordinary outcome and every client would have to treat it as success. The resource is keyed by product_id and publishes no other id, because that is what every route addressing one takes.
Authorizations
A secret API key. Publishable keys cannot reach this API. A key may carry an expiry, and an expired key is refused exactly like an unknown one, with a 401 that names no reason; check the key's expires_at in the dashboard rather than inferring it from a response. When a merchant rolls a key's secret they choose a grace window of up to 3 days, and for its duration BOTH the new secret and the one it replaced authenticate, so an integration moves over on its own deploy schedule instead of at the instant the button is pressed. Move before the window closes: after it, the old secret is refused. Nothing else about this contract moves with a roll. The key keeps its id and its scopes, so the only thing an integration updates is the credential itself.
Query Parameters
EXACT match on one product, which is how you ask "is this product classified" before an import. A product with no classification returns an empty page, which is the answer rather than an error: the invoice generator falls back to HSN 9999 at the store's default rate, so having no row is a configuration.
Rows per page. Out of range is a 400 rather than a silent clamp, so a client asking for more than 100 learns it did not get it.
1 <= x <= 100The next_cursor from the previous page. Opaque: decode nothing from it and construct nothing by hand, since its encoding is not part of this contract. Omit it to read the first page.