{"type":"firestarter.listing","listing":{"id":"lst_YzOTKcN0","product_name":"The Linchpin: 5/8\" to 1\" Rack Attachment Adapter Sleeve","category":"Rack Accessories","description":"There are two dominant pin standards in the rack world (5/8\" and 1\") and they don't like to play nice with each other. A TON of garage gym owners end up with attachments from multiple brands, multiple rack generations, or both. The result? Perfectly good equipment sitting in a corner because the pin is the wrong size for your rack.\nThe Linchpin is for garage gym owner who's mixing equipment across brands and generations. You bought great attachments for an old rack, upgraded to a 3x3, and now they don't fit. Or you scored a deal on a used 5/8\" pin attachment and your rack runs 1\" holes.\nThis sleeve bridges that gap permanently.","images":["https://cdn.shopify.com/s/files/1/0049/4272/files/The-Linchpin_-5-8_-to-1_-Pin-Adapter-Sleeve-Fringe-Sport-613372981.jpg?v=1775197536","https://cdn.shopify.com/s/files/1/0049/4272/files/The-Linchpin_-5-8_-to-1_-Pin-Sleeve-Adapter-Fringe-Sport-613372161.jpg?v=1775186352","https://cdn.shopify.com/s/files/1/0049/4272/files/The-Linchpin_-5-8_-to-1_-Pin-Sleeve-Adapter-Fringe-Sport-613372254.jpg?v=1775186354","https://cdn.shopify.com/s/files/1/0049/4272/files/The-Linchpin_-5-8_-to-1_-Pin-Sleeve-Adapter-Fringe-Sport-613372358.jpg?v=1775186356","https://cdn.shopify.com/s/files/1/0049/4272/files/The-Linchpin_-5-8_-to-1_-Pin-Sleeve-Adapter-Fringe-Sport-613372424.jpg?v=1775186359","https://cdn.shopify.com/s/files/1/0049/4272/files/The-Linchpin_-5-8_-to-1_-Pin-Sleeve-Adapter-Fringe-Sport-613372547.jpg?v=1775186359","https://cdn.shopify.com/s/files/1/0049/4272/files/The-Linchpin_-5-8_-to-1_-Pin-Sleeve-Adapter-Fringe-Sport-613372621.jpg?v=1775186359","https://cdn.shopify.com/s/files/1/0049/4272/files/The-Linchpin_-5-8_-to-1_-Pin-Sleeve-Adapter-Fringe-Sport-613372798.jpg?v=1775186362"],"price":25,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:44.748Z"},"share_url":"https://firestarter.network/l/lst_YzOTKcN0","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_YzOTKcN0' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy The Linchpin: 5/8\" to 1\" Rack Attachment Adapter Sleeve' and a budget_max comfortably above $25.00 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."]}}