{"type":"firestarter.listing","listing":{"id":"lst_-c-25uyy","product_name":"Mason Live Nylon-String","category":"Guitars","description":"A modern take on the classical guitar, Mason features a solid cedar top, comfortable cutaway shape, and Savarez nylon-strings for extra lush playability.","images":["https://cdn.shopify.com/s/files/1/0550/6737/files/MASON-NY-C-L-FRONT-FULL.jpg?v=1729100931","https://cdn.shopify.com/s/files/1/0550/6737/files/MASON-NY-C-L-ANGLED-RIGHT.jpg?v=1729100931","https://cdn.shopify.com/s/files/1/0550/6737/files/MASON-NYLON-C-LIVE-REAR-FULL.jpg?v=1729100931","https://cdn.shopify.com/s/files/1/0550/6737/files/MASON-NYLON-C-LIVE-SIDE-1.jpg?v=1729100931","https://cdn.shopify.com/s/files/1/0550/6737/files/GIGBAG-GUITAR_a67b238e-5f69-4cda-bf0a-3247a499e02c.jpg?v=1773188447","https://cdn.shopify.com/s/files/1/0550/6737/files/MASON-NY-C-L-LIFESTYLE.jpg?v=1729100931"],"price":531.25,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:56.270Z"},"share_url":"https://firestarter.network/l/lst_-c-25uyy","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_-c-25uyy' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Mason Live Nylon-String' and a budget_max comfortably above $531.25 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."]}}