{"type":"firestarter.listing","listing":{"id":"lst_ri8m_-Yu","product_name":"Ring Sizer","category":"Accessories","description":"Before you put a ring on it, let’s make sure it fits!\nDetails\n\nMade from premium heavy weight paper\nPocket size\nUse a real finger or an existing ring of the intended recipient \nRe-usable \n\n\nReusable Ring Sizer\nGone are the days of guessing what your (or her) ring size is! This reusable ring sizer is your best tool for getting the right size.\nMade of bar grade thick paper, this ring sizer measures average women's ring sizes from 3-14. Each size has a cut-out hole to approximately determine the ring size you need.\nTo find the right ring size, insert the finger you plan to wear the ring on into the loop opening of the ring sizer. Once you find the loop that fits your finger best, read the number on the ring sizer. Each loop is numbered with the corresponding ring size.\nPlanning to propose but don’t know her ring size? Use an existing ring that fits the right finger, and lay it on the different cut-outs. The best ring size is the one that best fits the inside of the ring. \nThe sizes shown on the loops are US sizes, corresponding to the ring sizes shown on our website.","images":["https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-580994.jpg?v=1726563579","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-115052.jpg?v=1726563582","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-220184.jpg?v=1726563585","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-622594.jpg?v=1726563588","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-920181.jpg?v=1726563591","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-910411.jpg?v=1726563594","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-694552.jpg?v=1726563597","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-935426.jpg?v=1726563600","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-898664.jpg?v=1726563603","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-529401.jpg?v=1726563606","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-993568.jpg?v=1726563609","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-137710.jpg?v=1726563612","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-924559.jpg?v=1726563615","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-138051.jpg?v=1726563618","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-643556.jpg?v=1726563620","https://cdn.shopify.com/s/files/1/1205/9982/products/ring-sizer-257693.jpg?v=1726563623"],"price":3,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:28.959Z"},"share_url":"https://firestarter.network/l/lst_ri8m_-Yu","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_ri8m_-Yu' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Ring Sizer' and a budget_max comfortably above $3.00 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."]}}