Amazon Publisher — a compact FastAPI demo that reads product rows from Google Sheets, builds Amazon Listings-style JSON payloads (using local Product-Type schemas), validates them, and exposes preview + feeds endpoints. Quick facts: Purpose: validate & prepare Listings payloads from a spreadsheet in a reproducible, extendable demo. Mode: demo (no real SP-API calls; feeds are stubbed but flow is ready to wire to real SP-API). Tech: FastAPI, pydantic models, google-sheets API, local JSON schema validation, Docker. Full technical documentation: 🇺🇦 UKR • 🇬🇧 ENG