{"type":"firestarter.listing","listing":{"id":"lst_Avnak2sI","product_name":"Arches Aquarelle Block","category":"Paper goods","description":"Hand-picked by the Tom’s Studio team – the best of the best.\nA premium watercolour block from one of the world’s most respected paper makers, selected for its outstanding quality, texture and performance.\nEach block features robust 300 gsm sheets glued on all four sides, helping to reduce buckling while you work – perfect for heavier washes and more saturated colour. Available in Hot Press (Satine), Cold Press (NOT) and Rough finishes, the paper supports everything from precise detail to expressive, painterly marks, with excellent absorbency and long-lasting archival quality.","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/ArchesAquarelleBLOCK_9x12_HOTPRESS.jpg?v=1770118664","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/ArchesAquarelleBLOCK_12X16_COLDPRESS.jpg?v=1770118664","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/ArchesAquarelleBLOCK_12X16_HOTPRESS.jpg?v=1770118665","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/ArchesAquarelleBLOCK_12X16_ROUGH.jpg?v=1770118664","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/ArchesAquarelleCompare.jpg?v=1770719050"],"price":94,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:22.794Z"},"share_url":"https://firestarter.network/l/lst_Avnak2sI","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 ","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_Avnak2sI' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Arches Aquarelle Block' and a budget_max comfortably above $94.00 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."]}}