{"type":"firestarter.listing","listing":{"id":"lst_61WnMh7a","product_name":"Dark Matter","category":null,"description":"Dark Matter delivers the perfect blend of power, comfort, and feel for players seeking a premium multifilament experience.\nEngineered with a proprietary black pigment that bonds the filaments, it actively dampens harsh vibrations for an ultra-smooth, arm-friendly performance.\nAn added layer of polyamide coating enhances durability without sacrificing softness or responsiveness.\nIdeal for non-string breakers, Dark Matter offers above-average power and impressive spin potential - making it the go-to choice for players who prioritize performance without compromising comfort.\nAvailable in two gauges:16 G - 1.32mm17 G - 1.25mm","images":["https://cdn.shopify.com/s/files/1/0253/6210/4402/files/darkmatter16set1500x1500-front.png?v=1780682018","https://cdn.shopify.com/s/files/1/0253/6210/4402/files/darkmatter17set1500x1500-front.png?v=1780682025"],"price":14.95,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:57.417Z"},"share_url":"https://firestarter.network/l/lst_61WnMh7a","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_61WnMh7a' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Dark Matter' and a budget_max comfortably above $14.95 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."]}}