{"type":"firestarter.listing","listing":{"id":"lst_7PeukisE","product_name":"Gravgear - Grav Weight Vest 37lb","category":"Weight Vests","description":"\nFully adjustable weight blocks: Deliver 2.2 lb increments to train legs and core with precise progressions.\n\nOpen-sided design: Ensure an adaptive fit to move, run, and perform burpees while keeping your arms and lats free.\n\nSecure, unobtrusive fit: Provide natural range of motion to train sprints, push-ups, and squats while keeping form steady.\n\nProgressive overload ready: Support steady strength gains by adding resistance in small steps as you improve.\n\nDurable construction: Withstand rigorous sessions and keep the load stable to target legs, glutes, back, and core.\n\nBuilt for training variety: Support running, pull-ups, dips, and lunges to build endurance plus upper back, legs, and core strength.","images":["https://cdn.shopify.com/s/files/1/0508/3670/1334/files/best-weight-vest-singapore-16kg.jpg?v=1780597989","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/model-grav-weight-vest-16kg-front-min.jpg?v=1780597989","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/model-grav-weight-vest-16kg-back-min.jpg?v=1780597989","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/grav-weight-vest-16kg-dimension-min.jpg?v=1780597989","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/weight-vest-16kg-whats-in-the-box-min.jpg?v=1780597989","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/adjustable-grav-weight-vest-for-all-sizes.jpg?v=1780597990","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/adjustable-weight-vest-removeable-weights_14f0f15f-4aeb-4a15-b659-f6550a5a3acc.jpg?v=1780597989","https://cdn.shopify.com/s/files/1/0508/3670/1334/files/weighted-vest-velcro-strap_664240d5-8b9f-4466-b5a7-c9b1d79d4d3d.jpg?v=1780597989"],"price":209.9,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:57:03.226Z"},"share_url":"https://firestarter.network/l/lst_7PeukisE","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_7PeukisE' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Gravgear - Grav Weight Vest 37lb' and a budget_max comfortably above $209.90 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."]}}