{"type":"firestarter.listing","listing":{"id":"lst_GWmV5jIP","product_name":"Heavyweight T-Shirt","category":"Tees","description":"Description\n\n\n\n\n\n\n\n\nOur Heavyweight T-shirt is produced in a custom-developed heavyweight jersey fabric, the result of years of development. The knit is made with long-staple, ring-spun and combed cotton yarn, providing both incredible softness and durability. Nearly double the weight of our regular T-shirt, the tightly knitted construction creates a drape with a more boxy silhouette. The collar is finished with a double-needle mounted construction, a nod to the vintage sportswear tees we’ve always appreciated.\n\n\n\n\n\n\n\nDetails\n\n100% cotton, 10 oz. jersey from Portugal.\nMade in Portugal.\n\nCare\nWash on cold. Tumble dry low. ","images":["https://cdn.shopify.com/s/files/1/0009/8100/8447/files/Heavyweight_T-Shirt_Black_Front.jpg?v=1754428272","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/Heavyweight_T-Shirt_Black_Detail.jpg?v=1754428272","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/Heavyweight_T-Shirt_Deep_Forest_Front.jpg?v=1772729111","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/Heavyweight_T-Shirt_Milk_Front.jpg?v=1772729111","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/Heavyweight_T-Shirt_Milk_Detail.jpg?v=1772729111","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/250808_KNICKERBOCKERFW_LOOK05_0843_0afd5396-527b-4a0e-a7f8-9cde02bdf81c.jpg?v=1772729111","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/250808_KNICKERBOCKERFW_LOOK05_0877_ead856aa-c20e-4439-bdd2-33ce03d406d5.jpg?v=1772729111","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/Heavyweight_T-Shirt_Moon_Rock_Front.jpg?v=1772729111","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/Heavyweight_T-Shirt_Navy_Front.jpg?v=1772729111","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/Heavyweight_T-Shirt_Navy_Detail.jpg?v=1772729111","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/250808_KNICKERBOCKERFW_LOOK24_2383_5786e4cb-4d0d-4a92-9af5-7e105715d482.jpg?v=1772729205","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/250808_KNICKERBOCKERFW_LOOK27_2529_be90340a-40c8-4814-90a5-b1e944313ab4.jpg?v=1772729205","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/Heavyweight_T-Shirt_Oat_Grey_Front_3358faa9-23f0-4628-bddf-3cd0114eb731.jpg?v=1772729212","https://cdn.shopify.com/s/files/1/0009/8100/8447/files/Heavyweight_T-Shirt_Oat_Grey_Detail.jpg?v=1772729212"],"price":85,"currency":"USD","in_stock":true,"inventory_qty":199980,"dynamic_pricing":false,"listed_at":"2026-06-18T20:30:23.549Z"},"share_url":"https://firestarter.network/l/lst_GWmV5jIP","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_GWmV5jIP' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Heavyweight T-Shirt' and a budget_max comfortably above $85.00 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."]}}