{"type":"firestarter.listing","listing":{"id":"lst_kWJJaRD2","product_name":"Sign Pen (more colors)","category":"Curated","description":"The best felt pen to write, to draw and to sign autographs.Bright colors as vivid as your mind, a lead that slides perfectly on paper, an hexagonal shape preventing from dropping-off the table. \nIconic and timeless, it proved its value for over 45 years.\nLength: 13 cm \nTip: Drawing from 0.8 mm to 2 mm\nMade in Japan","images":["https://cdn.shopify.com/s/files/1/1751/9263/products/blue-sign-pen.jpg?v=1772584919","https://cdn.shopify.com/s/files/1/1751/9263/files/yellow-sign-pen.jpg?v=1772584919","https://cdn.shopify.com/s/files/1/1751/9263/products/orange-sign-pen.jpg?v=1772584919","https://cdn.shopify.com/s/files/1/1751/9263/products/pink-sign-pen.jpg?v=1772584919","https://cdn.shopify.com/s/files/1/1751/9263/products/red-sign-pen.jpg?v=1772584919","https://cdn.shopify.com/s/files/1/1751/9263/products/green-sign-pen.jpg?v=1772584919","https://cdn.shopify.com/s/files/1/1751/9263/files/48176572309b131969b189bcc4757b44b2a0a40e25afbf08fc5e7b10b30e917d.webp?v=1772584919"],"price":4.5,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:43:50.481Z"},"share_url":"https://firestarter.network/l/lst_kWJJaRD2","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_kWJJaRD2' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Sign Pen (more colors)' and a budget_max comfortably above $4.50 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."]}}