{"type":"firestarter.listing","listing":{"id":"lst_ZRz1IErB","product_name":"Stout T Shirt | Percival x Guinness | White","category":"Jersey","description":"Guinness x Percival stout embroidered t shirt. Rich in texture, our embroidery tees are always serving (while stocks last). Portuguese organic cotton tee with hand illustrated stout embroidery at chest, heritage meets thread count. Sláinte.\nMen's Guinness White T-shirt\n\nFeatures: Men's t shirt, part of the Guinness x Percival collection a limited edition capsule. This the embroidered t-shirt with detailed Guinness pint and logo at chest, woven label at hem.\nColour: White\nMaterial: 100% Organic Cotton\nCare: Wash at 30 degrees, or cold\n\nModel is 6ft and wears a medium\nCollection: Guinness x Percival\n\n\n","images":["https://cdn.shopify.com/s/files/1/1479/8488/files/PERCIVAL_MENSWEAR1_1c78331a-4259-4749-ba17-3c363915d740.jpg?v=1772720382","https://cdn.shopify.com/s/files/1/1479/8488/files/PERCIVAL_MENSWEAR2_9ffb4165-9820-41c8-a958-44df7e528864.jpg?v=1772720382","https://cdn.shopify.com/s/files/1/1479/8488/files/PERCIVAL_MENSWEAR_d985816d-c741-47cf-921d-0973c321f14f.jpg?v=1772727492","https://cdn.shopify.com/s/files/1/1479/8488/files/PERCIVAL_MENSWEAR3_caa81731-3076-4087-afa6-afba55bd38d5.jpg?v=1772727492","https://cdn.shopify.com/s/files/1/1479/8488/files/Stout_tshirt_Percival_x_Guinness_White_1.jpg?v=1761659251"],"price":95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:30:17.206Z"},"share_url":"https://firestarter.network/l/lst_ZRz1IErB","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_ZRz1IErB' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Stout T Shirt | Percival x Guinness | White' and a budget_max comfortably above $95.00 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."]}}