{"type":"firestarter.listing","listing":{"id":"lst_iOF9o87M","product_name":"EP1 Piston","category":null,"description":"Looking for a way to customize your EP1? These pistons will allow you to switch up the look of your EP1 to better match your daily carry. To install, start by unscrewing the thumb stud and then unscrew the pen tip. The piston will drop out with the spring and refill. We have found that it's easiest to place the piston on top of the refill and then slide it back into the pen body. This way you can easily align the thumb stud by turning the refill. \n \nDesigned and Developed in Huntington Beach, CA\n ","images":["https://cdn.shopify.com/s/files/1/0251/8214/2519/products/brass_piston.png?v=1613169083","https://cdn.shopify.com/s/files/1/0251/8214/2519/products/copper_piston.png?v=1625074426","https://cdn.shopify.com/s/files/1/0251/8214/2519/products/brass_pistons_lineup.png?v=1613169084","https://cdn.shopify.com/s/files/1/0251/8214/2519/products/stainless_piston.png?v=1613169084","https://cdn.shopify.com/s/files/1/0251/8214/2519/products/stainless_piston_lineup.png?v=1613169084","https://cdn.shopify.com/s/files/1/0251/8214/2519/products/titanium_piston.png?v=1625104893"],"price":7.95,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:47.252Z"},"share_url":"https://firestarter.network/l/lst_iOF9o87M","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_iOF9o87M' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy EP1 Piston' and a budget_max comfortably above $7.95 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."]}}