{"type":"firestarter.listing","listing":{"id":"lst_AC_7WgFL","product_name":"Smithsonian Rock Tumbler","category":null,"description":"Turn rough rocks into beautiful, polished stones that you can use to make charms, bracelets, keychains, and more with this STEM toy from Smithsonian. \nBegin by tumbling the included rocks in a barrel with water and grit, then repeat this cycle using progressively finer grits. In just weeks, the Smithsonian Rock Tumbler mimics the process that takes oceans thousands of years! \n• Turn rough rocks into beautiful, polished stones! \n• Includes accessories to make charms, bracelets, and keychains. \n• Mimics the same process as the ocean. \n• STEM content teaches about different types of rocks and how they form. \n• Ages 10+","images":["https://cdn.shopify.com/s/files/1/1751/9263/files/Screenshot_2025-11-15_at_4.39.10_PM.png?v=1763250231","https://cdn.shopify.com/s/files/1/1751/9263/files/rocktumbler2.webp?v=1763250231"],"price":85,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:43:49.021Z"},"share_url":"https://firestarter.network/l/lst_AC_7WgFL","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_AC_7WgFL' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Smithsonian Rock Tumbler' and a budget_max comfortably above $85.00 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."]}}