{"type":"firestarter.listing","listing":{"id":"lst_rU5zFn4z","product_name":"Belgian Sharpening Whetstones - Extra Fine","category":"Tool Sharpeners","description":"These extra fine whetstones are used for sharpening knives, made from natural stone quarried from the Belgian Ardennes mountains. Their unique consistency makes it possible for us to grind the blades with precision and in a material-friendly way. The lighter layer is used for grinding, the slate layer on the bottom is simply to make the sharpening stone stronger.","images":["https://cdn.shopify.com/s/files/1/0720/5824/1345/files/belgian-whestone-all.jpg?v=1697475382","https://cdn.shopify.com/s/files/1/0720/5824/1345/files/belgian-whestone-6.jpg?v=1697475387","https://cdn.shopify.com/s/files/1/0720/5824/1345/files/belgian-whetstone.jpg?v=1697475385"],"price":28,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:21.672Z"},"share_url":"https://firestarter.network/l/lst_rU5zFn4z","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_rU5zFn4z' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Belgian Sharpening Whetstones - Extra Fine' and a budget_max comfortably above $28.00 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."]}}