The Grail Index · SS26 market report

Find any grail's real market price.

Search by brand, piece, or season — Atelier reconciles live listings across eBay, Grailed and StockX into one market number, with a Buy · Hold · Wait call on every grail. The same data is a keyless JSON API and an llms.txt, built to be read by AI agents.

The Spread — retail to resale Authenticated

Maison Margiela — Tabi Boot Calfskin · Black

Retail $990 +44% Resale $1,430
Illustrative composition — search any grail for its live retail-to-resale spread and verdict.

Built for developers & AI agents

Every price on this page is also a keyless JSON API (/v1), an llms.txt, and an MCP server your AI client can call live. A free account mints an API key that raises the limits and unlocks writes; paid plans add volume plus deeper resale data.

See pricing & get a free key →Read the docs