{"type":"firestarter.listing","listing":{"id":"lst_5lgfy-ER","product_name":"Brake Fluid Tester Pen","category":"Brake Tools","description":"The Powerbuilt Brake Fluid Tester is the perfect addition to your garage. This handy, compact diagnostic tool makes it quick and easy to check the moisture content in brake fluid. The built-in LED lights indicate whether fluid is good, OK or bad. It works on all vehicles using DOT4 brake fluid.\nAny automotive specialty tool makes an automotive repair or maintenance task easier, but Powerbuilt takes the concept of ‘help’ a big step further.\nEvery package comes with professionally written usage instructions and photos that take you step by step through proper tool usage.\n\nChecks moisture content in brake fluid\nLED lights indicate if fluid is good, OK or bad\nWorks on vehicles with DOT4 brake fluid\nPowered by AAA Battery (included)\n","images":["https://cdn.shopify.com/s/files/1/0443/2681/3852/products/647626-01.jpg?v=1677716156","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/647626-02.jpg?v=1677716156","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/647626-03.jpg?v=1677716156","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/647626-04.jpg?v=1677716156"],"price":29.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:27:10.911Z"},"share_url":"https://firestarter.network/l/lst_5lgfy-ER","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_5lgfy-ER' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Brake Fluid Tester Pen' and a budget_max comfortably above $29.95 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."]}}