{"type":"firestarter.listing","listing":{"id":"lst_znFB7-U9","product_name":"Hydraulic Bass Batter Drumhead","category":"Evans Drumheads","description":"EVANS Hydraulic bass drumheads give you the fat, deep, short sound pioneered by rock and roll drummers in the 1970s. Made with a thin layer of oil between two plies of 7 mil film (6.5mil &amp; 7.5mil for Hydraulic Black), these heads not only suppress unwanted overtones, but are also famously easy to tune. Hydraulics have a defined attack, short sustain, and dark tonal character. This bass drumhead also features Level 360 Technology and is available in clear, red, blue, and black.","images":["https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HR_main_transparent.png?v=1773170425","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HG_main_transparent.png?v=1773170425","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD20HB_main_transparent.png?v=1773170425","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD20HR_main_transparent.png?v=1773014498","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HBG_main_transparent.png?v=1773014498","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HB_main_transparent.png?v=1773014498","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HG_detail1_transparent.png?v=1773014499","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD20HB_detail1_transparent_36e20a62-a608-4c2f-8210-8829aa6d7056.png?v=1773014499","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HR_detail1_transparent.png?v=1773014499","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD20HR_detail1_transparent_525e79ad-a109-4a09-9311-e696d2a9fd71.png?v=1773014500","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HBG_detail1_transparent.png?v=1773014501","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HB_detail1_transparent.png?v=1773014501","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HBG_testonBassBatter_white.jpg?v=1773014502","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HG_onBassBatter_transparent.png?v=1773014502","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD20HB_onBassBatter_transparent.png?v=1773014502","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HR_onBassBatter_transparent.png?v=1773014502","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD20HR_onBassBatter_transparent.png?v=1773014503","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HBG_onBassBatter_transparent.png?v=1773014504","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_BD22HB_onBassBatter_transparent.png?v=1773014504","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_hydraulics_EnhancedImage1_transparent_web.png?v=1773014504","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_hydraulics_EnhancedImage2_transparent_web_a70a0ff8-7a21-4495-a444-b172b8ac1563.png?v=1773014505","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_hydraulics_EnhancedImage3_transparent_web.png?v=1773014505","https://cdn.shopify.com/s/files/1/0669/6042/5025/files/ev_hydraulics_EnhancedImage4_transparent_web.png?v=1773014506"],"price":54.99,"currency":"USD","in_stock":true,"inventory_qty":59994,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:57.812Z"},"share_url":"https://firestarter.network/l/lst_znFB7-U9","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_znFB7-U9' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Hydraulic Bass Batter Drumhead' and a budget_max comfortably above $54.99 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."]}}