{"type":"firestarter.listing","listing":{"id":"lst_V5kKEyS0","product_name":"Build Your Own Watercolour Travel Tin","category":"Art Supplies","description":"Pick any 12 of our hand-poured watercolour half pans and your travel tin is on us.\nThis is your chance to build a palette that feels entirely your own – bright botanicals, earthy landscapes, bold primaries or soft, moody neutrals. Every half pan is artist-grade, pigment-rich and rated excellent for lightfastness. Each one is hand-filled in our Somerset studio and poured into recycled plastic pans made from ghost nets recovered from the Cornish coast.\nYour lightweight metal travel tin holds all 12 colours, with space for mixing and swatching wherever you are – from kitchen table to countryside sketch. A compact, considered way to carry your personal colour story in your pocket.\nAnd if you need something to put them to work with, our brushes are rather lovely, too.","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/ArtFreeTin.jpg?v=1772461072","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/ArtFreeTin12.jpg?v=1772461072"],"price":0,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:22.538Z"},"share_url":"https://firestarter.network/l/lst_V5kKEyS0","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_V5kKEyS0' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Build Your Own Watercolour Travel Tin' 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."]}}