{"type":"firestarter.listing","listing":{"id":"lst_uTKw3fKJ","product_name":"Butterfly Clasp (various sizes)","category":"Watch Bands","description":"Like the look of a strap, but the functionality and ease of a bracelet, then maybe you should try a butterfly clasp. These handy buckle accessories fit all the Dufrane straps (and possibly any properly sized strap). They are highly polished (Silver and Rose Gold) and utilize the D|Protect scratch resistance feature. To ensure you choose the correct size, measure the strap width at the buckle (not the lug width). Most straps taper, so be sure to measure the width.\n\n316L stainless steel- polished in either Silver or Rose Gold PVD\nHigh tension spring steel or push button release\nDurable strap connection hardware (for the buckle attachment)\nConvenient pin fixture for strap hole sizing\nStrap Sizing\n\n16mm size will fit the 20mm Epsom straps\n18mm size will fit 20mm Curved End straps, and 22mm Epsom straps\n20mm size will fit all 22mm leather and rubber straps\n\n\n","images":["https://cdn.shopify.com/s/files/1/0249/7888/2635/files/butterfly-clasp-spring-closure-9388074.jpg?v=1766236087","https://cdn.shopify.com/s/files/1/0249/7888/2635/files/butterfly-clasp-spring-closure-1286464.jpg?v=1766236088","https://cdn.shopify.com/s/files/1/0249/7888/2635/files/butterfly-clasp-spring-closure-4477414.jpg?v=1766236088"],"price":34.95,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:45.965Z"},"share_url":"https://firestarter.network/l/lst_uTKw3fKJ","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_uTKw3fKJ' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Butterfly Clasp (various sizes)' and a budget_max comfortably above $34.95 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."]}}