{"type":"firestarter.listing","listing":{"id":"lst_ptErhIgh","product_name":"Hobby Knife with Retractable Blade","category":"Cutting Tools","description":" \n\nYou don't have to have a hobby to appreciate the sheer genius of the Powerbuilt retractable blade hobby knife.\nInstead of the usual razor sharp fixed blade waiting in a drawer or tool box to take a blood sample from your finger, this hobby knife offers an elegant solution: just twist the knife body to expose the blade for cutting, then twist it again to retract the blade closed between uses and for storage.\nIt's lightweight and comfortable, with a generous sized barrel and rubber grip sleeve for added comfort and control. And when it's time for a fresh blade, pop off the end cap to access two extra blades stored inside.\nNothing could be quicker, easier or safer. It comes complete with 3 blades and accepts standard hobby knife replacement blades.\nFeatures &amp; Benefits\n\nThe only hobby knife with a twist open, twist close blade\nSafer than standard hobby knives - no fixed exposed blade\nLightweight, comfortable design with rubber barrel grip for all-day use\nIdeal for cutting gaskets, paper, thin plastic, rubber tubing, decals and more\nIncludes 3 blades, on-board blade storage and shirt-pocket clip\n\nWARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov","images":["https://cdn.shopify.com/s/files/1/0443/2681/3852/products/240040_2.jpg?v=1652834018","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/240040_view_202.jpg?v=1652834018","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/240040_20hand_20.jpg?v=1652834018","https://cdn.shopify.com/s/files/1/0443/2681/3852/products/240040_1.jpg?v=1652834018"],"price":13.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:27:13.050Z"},"share_url":"https://firestarter.network/l/lst_ptErhIgh","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_ptErhIgh' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Hobby Knife with Retractable Blade' and a budget_max comfortably above $13.95 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."]}}