Fetch AliExpress Listing (Official Affiliate API) — Fallback

Use as a fallback to fetch-listing, not a replacement. Counterintuitive but accurate: the no-auth scraper returns more buyer-relevant data than the official API. Reach for this skill only when the scraper breaks.

Status: ✅ validated end-to-end

Signing flow validated against a live approved Affiliate app. search and detail both round-trip successfully. The script ports the exact algorithm from the official Python SDK (iop-sdk-python-20220609).

Why a fallback (not primary)

The AliExpress Affiliate API is built for affiliate-marketing publishers — its job is to drive conversions and track commission, not to support buyer-side analysis. Several fields a buyer cares about are simply not in the response: