{"type":"firestarter.listing","listing":{"id":"lst_6OT6c7oc","product_name":"Universal LED Brake Fluid Tester (DOT 3, 4 & 5.1)","category":"Specialty Kits","description":"You can quickly and accurately assess the condition of the DOT3, DOT4 or DOT5.1 brake fluid in your vehicle with this simple, effective brake fluid tester pen. 5 LED indicator lights let you know how much water content is in your brake fluid so you can determine when it's time to change the fluid. This pocket-sized tester comes complete with a AAA battery and cap to protect the testing prongs from dirt or damage between uses.\nWorks on DOT 3, 4 and 5.1 and works on all specific DOT 3 brands from AC Delco, Prestone, Motorcraft, Pennzoil and Toyota.\nFeatures\n\n5 LEDs offer visual indicator for water content in brake fluid\nEasy and economical way to monitor condition of the braking systems in all your vehicles\nGreat for shops and DIY mechanics\nIncludes battery and protective cap\n","images":["https://cdn.shopify.com/s/files/1/0443/2681/3852/files/647766-a.png?v=1774267456","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/647766-02.jpg?v=1774267456","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/647766-03.jpg?v=1774267456","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/647766_usage.jpg?v=1774267456","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/647766_usage_2.jpg?v=1774267456","https://cdn.shopify.com/s/files/1/0443/2681/3852/files/647766-04.jpg?v=1774267456"],"price":49.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:27:11.620Z"},"share_url":"https://firestarter.network/l/lst_6OT6c7oc","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_6OT6c7oc' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Universal LED Brake Fluid Tester (DOT 3, 4 & 5.1)' and a budget_max comfortably above $49.95 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."]}}