GRetail Extreme Stock API (read-only)

Send your key as header  X-API-Key: <key>  or add  key=<key>  to the URL.
Add  format=csv  to any data call to get CSV instead of JSON (opens in Excel).
Dates are yyyy-MM-dd.

GET /health
GET /stock                  stock on hand per barcode
      ?asof=2026-10-18  &item=SHIRT  &brand=  &branch=  &design=  &barcode=  &top=100
GET /stock/summary          totals grouped
      ?by=item|brand|branch|design|color|size   (+ same filters as /stock)
GET /stock/barcode/<code>   one barcode: current qty and full movement history
GET /movements              stock in/out lines between two dates
      ?from=2026-10-01  &to=2026-10-18  &type=SALE|ICHLN|OCHLN|SA|OPSTK  &item=  &barcode=
GET /items                  item master list