{"type":"firestarter.listing","listing":{"id":"lst_i2sxKiTB","product_name":"3 Piece Universal Joint Set","category":"Universal Joints","description":"Sometimes you have a socket that fits the fastener, but doesn’t fit your ratchet. This 3 piece universal joint set is your answer, giving you a u-joint to match your ratchet just like that.\nAnd don’t think these u-joints are the weakest link. Built using premium chrome vanadium steel, these U-joints meet or exceed ANSI standards for strength and torque loads.\nWith a beautiful mirror polish finish, these stylish U-joints can do the job and look good doing it. \nDependable Powerbuilt u-joints meet or exceed ANSI standards and have a lifetime warranty, all at affordable prices.Set includes 1/4”, 3/8” and 1/2” drive universal joints. \n\n ","images":["https://cdn.shopify.com/s/files/1/0443/2681/3852/products/640858-01.jpg?v=1634003992","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/640858-02.jpg?v=1634003994","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/640858-03.jpg?v=1634003994","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/640858-04.jpg?v=1634003995","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/640858-05.jpg?v=1634003995"],"price":20.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:27:12.287Z"},"share_url":"https://firestarter.network/l/lst_i2sxKiTB","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 ","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_i2sxKiTB' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 3 Piece Universal Joint Set' and a budget_max comfortably above $20.95 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."]}}