{"type":"firestarter.listing","listing":{"id":"lst_wkkRWW6Z","product_name":"Stowaway Space Pen by Fisher Space Pen","category":"Notebooks / Pens / Pencils","description":"\nShips in 1-2 business days | Based in Boulder City, NV | Est. 1948\nA pen made to write in space\nThe Stowaway Space Pen by Fisher Space Pen is compact and built to write in any conditions. This pen will write upside down, underwater, in extreme temperatures, through hiker grime, on almost any surface, and, if you can hike that far, even in space. This lightweight pen has a slim design that can be packed almost anywhere. Write anywhere you walk with the Stowaway Fisher Space Pen. \n\n\nFeatures:\n\nReplaceable ink cartridge\nWill write for over 12,000ft or approximately 2.5 miles, that's a lot of journaling for one cartridge\nWrites underwater\n\n\n_______________________________________________\nSpecs\nDimensions: \n\nClosed: 3.9\" | 9.9cm\nOpen: 5.13\" | 13cm\nDiameter: 0.25\" | 0.64cm\n\nInk color: Black\nPoint size: 1.1mm\nOperational temperatures: -30°F to 250°F | -34°C to 121°C\nWeight: 0.2oz | 6g\nMaterials: Aluminum with an anodized aluminum finish \n\nCartridge: Fisher pressurized PR4, black ink, medium point, compatible with any PR refill\n\nMade in the U.S.A.\n\n ","images":["https://cdn.shopify.com/s/files/1/0537/1177/files/StowawaySpacePenbyFisherSpacePenblack.jpg?v=1779308400","https://cdn.shopify.com/s/files/1/0537/1177/files/StowawaySpacePenbyFisherSpacePenblackopen.jpg?v=1779308400","https://cdn.shopify.com/s/files/1/0537/1177/files/StowawaySpacePenbyFisherSpacePenblackpackaging.jpg?v=1779308400"],"price":17,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:42.649Z"},"share_url":"https://firestarter.network/l/lst_wkkRWW6Z","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_wkkRWW6Z' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Stowaway Space Pen by Fisher Space Pen' and a budget_max comfortably above $17.00 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."]}}