{"type":"firestarter.listing","listing":{"id":"lst_ySyGP5_b","product_name":"Round Diamond Diamond Engagement Ring","category":"Rings","description":"Round Diamond Solitaire Engagement Ring\nFeaturing Round White Faceted Diamond four prong solitaire style ring with 2 mm Platinum Band (ring shown is 1.2 ct round Diamond)\nCustom Rings in this style can be made in a variety of  diamond sizes &amp; colored gemstones as well!\nAvailable in Platinum, 18k Yellow Gold, &amp; 18k Rose Gold\n For Custom Bridal please email sales@kateywalker.com \n ","images":["https://cdn.shopify.com/s/files/1/0077/6041/2731/files/FullSizeRender_931dbdae-9da5-4f7f-9612-e674145fa739.jpg?v=1738812621","https://cdn.shopify.com/s/files/1/0077/6041/2731/files/FullSizeRender_ae988521-0d27-4c7a-a8bd-3ec551717d71.jpg?v=1738812621","https://cdn.shopify.com/s/files/1/0077/6041/2731/files/FullSizeRender_13be393b-129c-42a0-9176-f8b040ca937e.jpg?v=1738812621"],"price":0,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:21.118Z"},"share_url":"https://firestarter.network/l/lst_ySyGP5_b","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_ySyGP5_b' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Round Diamond Diamond Engagement Ring' and a budget_max comfortably above $0.00 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."]}}