{"type":"firestarter.listing","listing":{"id":"lst_W_M0dvuV","product_name":"London Blue Topaz Ring","category":"Rings","description":"A rose cut London blue topaz is simply wrapped in warm 22k gold This stone has a lovely color, a luminous and sparkly deep blue.\nSterling silver back, and 4mm wide hammered band. Stone measures approximately 1/2 inch x 3/8 inch. Matte finish.","images":["https://cdn.shopify.com/s/files/1/1479/9532/files/25-09-22_034_1200.jpg?v=1759003536","https://cdn.shopify.com/s/files/1/1479/9532/files/25-09-22_014.jpg?v=1759696455","https://cdn.shopify.com/s/files/1/1479/9532/files/25-09-22_033_1200.jpg?v=1759696455"],"price":825,"currency":"USD","in_stock":true,"inventory_qty":149985,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:26.261Z"},"share_url":"https://firestarter.network/l/lst_W_M0dvuV","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_W_M0dvuV' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy London Blue Topaz Ring' and a budget_max comfortably above $825.00 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}