{"sandbox":true,"experimental":true,"production_commerce":false,"notice":"SANDBOX ONLY: synthetic prices, no payment, shipment or real order. State expires in 15 minutes and on restart.","authentication":{"create":"/commerce-sandbox/session","type":"Bearer","expires_in":900},"catalog":"/commerce-sandbox/catalog","protocols":{"ACP":{"version":"2026-04-17","base_url":"https://rinatsultan.com/commerce-sandbox/acp","schema":"https://github.com/agentic-commerce-protocol/agentic-commerce-protocol/tree/main/spec/2026-04-17","status":"experimental-sandbox-subset"},"UCP":{"version":"2026-08-25","profile":"https://rinatsultan.com/commerce-sandbox/ucp/.well-known/ucp","status":"experimental-sandbox-subset"}},"limitations":["No platform onboarding or certification","No live payments or fulfillment","No buyer/address input","No remote UCP-Agent profile fetch or signature verification","Only the published synthetic instrument is accepted","Pinned versions; unsupported extensions rejected"]}