{"type":"firestarter.listing","listing":{"id":"lst_CvBA_n5m","product_name":"Nutritional Yeast (Flakes)","category":"Herbs & Spices","description":"Savory, cheesy flavor with a boost of B vitamins.\n This savory secret ingredient in our Veggie Dill Popcorn Seasoning doubles as a delicious salt alternative. Packed with healthy B vitamins, it's perfect for adding cheesy flavor to popcorn, pasta, and more.\n Details: Grown on cane and beet molasses. Origin Estonia.\n Zero-Waste Spice Refills Packaged in Compostable Packaging:\n \n \n Small Refill: scant 1/4 cup volume (0.6 oz net weight)\n \n Large Refill: 1/2 cup volume (1.5 oz net weight)\n \n Refill packaging is made from plants and safe for home composting. It's not meant for long-term storage; please transfer to airtight containers. Read about our zero-waste packaging here.\n \n Reusable Glass Magnetic Jars:\n \n \n Small Jar: scant 1/4 cup volume\n \n Large Jar: 1/2 cup volume \n \n \n \n New to Gneiss Spice? Check out our FAQs videos. Purchasing over a dozen jars? Buy a boxed custom kit and save over 10%.\n ","images":["https://cdn.shopify.com/s/files/1/1030/2399/products/nutritional-yeast-1.jpg?v=1541653286"],"price":4.5,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:12.494Z"},"share_url":"https://firestarter.network/l/lst_CvBA_n5m","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_CvBA_n5m' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Nutritional Yeast (Flakes)' and a budget_max comfortably above $4.50 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."]}}