GoBuy — Marketplace Evidence for Shopping

• Find Stronger Evidence Alternatives — Look up marketplace evidence alternatives for a checked product in GoBuy's local index. Returns only same-retailer, fresh listings with stronger marketplace evidence; this is evidence comparison, never a quality, safety, approval, recommendation, or 'better product' determination. The lookup is local database-only and does not fetch or recommend products.
• Search Products — Search Amazon products by GoBuy's 0–100 marketplace-evidence score. Returns available evidence, source limitations, prices, and retailer links. The score summarizes observed retailer signals; it is not a product-quality, safety, verification, or purchase recommendation. Performs a live Amazon search — results use GoBuy's pre-computed evidence index where available.
• Get Product — Get the available marketplace-evidence breakdown for a specific Amazon product by ASIN. Returns an Evidence Score, documented signals and limitations, price, and comparison listings. The 0–100 score describes observed retailer evidence and is not a product-quality, safety, verification, or purchase-approval determination. The evidence record is served from GoBuy's indexed catalog when available; uncached ASINs trigger a live fetch.
• Trust Verify — Return a legacy-compatible evidence certificate for an Amazon listing. SAFE, CAUTION, and BLOCK are client compatibility fields only; they are not safety findings, product approvals, verification, or purchase recommendations. Use the Evidence Score, signal coverage, and limitations in your own policy. Popular Amazon products are served from GoBuy's indexed evidence catalog; uncached products are fetched live.
• Trust Verify Batch — Return legacy-compatible evidence certificates for a shortlist of up to 25 products. SAFE (score ≥75), CAUTION (≥60), and BLOCK (<60) remain compatibility fields only, not recommendations or product approvals. Use the Evidence Score, coverage, and limitations in your own comparison policy. Maximum 25 products per call. Products in GoBuy's pre-scored index of 20,000+ popular items resolve instantly (<100ms each); uncached products are fetched live in parallel — use batch to avoid sequential timeo
• Place Order — Create a purchase order for a product on behalf of a consenting GoBuy user. Requires a GoBuy API key (gobuy_sk_...) from the user's account settings. Enforces per-key spend limits. Returns an Amazon checkout URL to complete purchase.
• List Categories — List product categories available on GoBuy for use as search filters.
• Build Shopping List — Build a curated shopping list from a natural-language request. Only returns products from GoBuy's verified trust index — no hallucination. Returns a shareable list URL viewable by humans at gobuy.ai/lists/:id.

Schemas and invoke metadata: Directory API