{"type":"firestarter.listing","listing":{"id":"lst_l2mt6dhM","product_name":"Carter Cold Tumbler","category":"Merchandise","description":"\n\n\n\nThe Wonderstate Carter Cold Tumbler from Fellow is designed to elevate every sip of your favorite cold beverages. Thoughtfully crafted with a ceramic-coated interior, it preserves the true flavor of your drink without imparting a metallic taste, while double-wall vacuum insulation keeps iced coffee, tea, water, and more refreshingly cold for hours.\nBuilt with Fellow's signature attention to taste, feel, and durability, the Carter Cold Tumbler offers a comfortable grip and premium construction that's made for everyday adventures. Finished with our signature copper cicada, it's a stylish companion whether you're commuting, heading to the office, or spending the day outdoors.\nAt 16 oz, it's the ideal size for iced lattes, cold brew, or staying hydrated on the go.\n\n16 oz capacity\nCeramic-coated interior preserves flavor without a metallic aftertaste\nDouble-wall vacuum insulation keeps drinks cold for hours\nDurable stainless steel construction\nComfortable, premium tactile feel\nFinished with Wonderstate's signature copper cicada\nPerfect for iced coffee, cold brew, tea, water, and other chilled beverages\n\n\n\n\n\n\n","images":["https://cdn.shopify.com/s/files/1/1348/5769/files/Fellow-Cold-Cup_front_68efdfec-4fe8-4b92-92fb-e75079f01209.png?v=1782756140","https://cdn.shopify.com/s/files/1/1348/5769/files/Fellow-Cold-Cup_top_2f311768-8d2f-4b83-a5fc-fa81048da946.png?v=1782756139"],"price":38,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-03T13:14:30.522Z"},"share_url":"https://firestarter.network/l/lst_l2mt6dhM","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_l2mt6dhM' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Carter Cold Tumbler' and a budget_max comfortably above $38.00 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."]}}