{"type":"firestarter.listing","listing":{"id":"lst_UnWpiZYg","product_name":"Homegrown Lifting - Squat Rack Spotter Arms","category":"Spotter Arms","description":"\n\n24 in spotter length: Ensure safe catches on squats, bench, and overhead to support training for legs, chest, and shoulders.\n\n3 in × 3 in, 1 in hole compatibility: Set up on standard folding racks and racks using 3 in × 3 in tubing with 1 in holes to expand training options.\n\nSafety pin locking: Ensure arms stay secure under heavy drops to keep the bar supported on squats and bench while you train legs and chest.\n\nDurable powder coat: Withstand wear and tear to keep the arms performing and looking good through countless training sessions.\n\nStable, robust build: Provide unwavering rack stability so you can perform heavy presses and squats to strengthen legs, chest, and shoulders.\n","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/SpotterArms-Photoroom.jpg?v=1780595237","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/IMG_0535.jpg?v=1780595239"],"price":156.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:57.630Z"},"share_url":"https://firestarter.network/l/lst_UnWpiZYg","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_UnWpiZYg' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Homegrown Lifting - Squat Rack Spotter Arms' and a budget_max comfortably above $156.99 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."]}}