{"type":"firestarter.listing","listing":{"id":"lst_E-rCbjWW","product_name":"PowerBlock - Pro 50 Adjustable Dumbbell","category":"Dumbbells","description":"\n\n13 in × 7 in footprint: Keep space clear and train chest, back, and legs in tight gyms while you store fewer weights.\n\n5 - 50 lb range replaces 19 pairs: Expand training and build strength in arms, shoulders, and legs with progressive sets.\n\nMagnetic selector pin: Set up on the color-coded stack and target biceps, triceps, and back with 2.5 lb or 5 lb changes.\n\nBlack urethane finish: Resist wear and ensure long-term use as you move between rows, presses, and goblet squats.\n\nTapered V-shaped plates: Improve stability and resist rolling to perform push-up rows and floor presses with control.\n\nPro Series attachment compatibility: Expand to barbell and kettlebell work to target back, legs, and core in circuits.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/IMG_3691_OPT.jpg?v=1780589659","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/pro-50-main.jpg?v=1780589660"],"price":549,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:57:03.788Z"},"share_url":"https://firestarter.network/l/lst_E-rCbjWW","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_E-rCbjWW' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy PowerBlock - Pro 50 Adjustable Dumbbell' and a budget_max comfortably above $549.00 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."]}}