{"type":"firestarter.listing","listing":{"id":"lst_VDb3_oNj","product_name":"Nutritional Yeast (Powder)","category":"Herbs & Spices","description":"Savory, cheesy flavor with a boost of B vitamins.\nThis 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.\nDetails: Grown on cane and beet molasses. Origin Estonia.\nZero-Waste Spice Refills Packaged in Compostable Packaging:\n\n\nSmall Refill: scant 1/4 cup volume (0.6 oz net weight)\n\nLarge Refill: 1/2 cup volume (1.5 oz net weight)\n\nRefill 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\nReusable Glass Magnetic Jars:\n\n\nSmall Jar: scant 1/4 cup volume\n\nLarge Jar: 1/2 cup volume\n\n\nNew 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/files/nutritionalyeastpowder.jpg?v=1706550547"],"price":4,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:11.550Z"},"share_url":"https://firestarter.network/l/lst_VDb3_oNj","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_VDb3_oNj' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Nutritional Yeast (Powder)' and a budget_max comfortably above $4.00 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."]}}