{"type":"firestarter.listing","listing":{"id":"lst_T_Vh67lg","product_name":"Organic Cotton Poplin Short Sleeve - MINT","category":"button down","description":"These beautifully lightweight short-sleeve shirts are made from organic cotton poplin with the kind of attention to detail that has made Klaxon Howl one of Canada's most respected small-batch manufacturers. Custom made exclusively for Upstate Stock, they feature a relaxed, boxy fit and a wide camp collar that looks just as good buttoned up as it does worn open over a tee.\nLike all Upstate Stock apparel, these shirts are produced in small batches by a family-owned factory in Toronto, where quality craftsmanship and thoughtful construction remain at the heart of every garment.\nHighlights\n\ncamp collar\nlightweight organic poplin cotton\ncatseye buttons\n","images":["https://cdn.shopify.com/s/files/1/1058/3278/files/New_shirts_2x3-16.jpg?v=1780584448","https://cdn.shopify.com/s/files/1/1058/3278/files/New_shirts_2x3_mint_and_lemon-3_1.jpg?v=1780584443","https://cdn.shopify.com/s/files/1/1058/3278/files/New_shirts_2x3_mint_and_lemon-1.jpg?v=1780584451","https://cdn.shopify.com/s/files/1/1058/3278/files/New_shirts_2x3_mint_and_lemon-2.jpg?v=1780584455","https://cdn.shopify.com/s/files/1/1058/3278/files/Button_Down_Medium_2x3-1.jpg?v=1726086763","https://cdn.shopify.com/s/files/1/1058/3278/files/Button_Down_Tights_Edits-7.jpg?v=1726086758","https://cdn.shopify.com/s/files/1/1058/3278/files/New_shirts_2x3-01_1.jpg?v=1780584442","https://cdn.shopify.com/s/files/1/1058/3278/files/New_shirts_2x3-02.jpg?v=1780584451","https://cdn.shopify.com/s/files/1/1058/3278/files/New_shirts_2x3-03_1.jpg?v=1780584444"],"price":115,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-18T20:43:30.705Z"},"share_url":"https://firestarter.network/l/lst_T_Vh67lg","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_T_Vh67lg' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Organic Cotton Poplin Short Sleeve - MINT' and a budget_max comfortably above $115.00 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."]}}