{"type":"firestarter.listing","listing":{"id":"lst__bPbPPA5","product_name":"Backpacker 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 that works everywhere and anywhere \nThe Backpacker Space Pen by Fisher Space Pen attaches to anything, allowing you to write anywhere. After hours of hanging upside down, it will immediately function as you want it to thanks to the pressurized, refillable, ink cartridge. Like all Fisher Space Pens, it will write upside down, in water, through mud, in extreme hot or cold, and even in the gravity-free vacuum of space. We don't know of anyone who has backpacked to space yet, but when you do, you can write worry-free anywhere along the journey with the Backpacker 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\nKeyring for easy attachment and carrying\n\n_______________________________________________\nSpecs\nDimensions: \n\nClosed: 4.09\" | 10.4cm\nOpen: 5.65\" | 14.4cm\nDiameter: 0.4\" | 1cm\n\nInk color: Black\nPoint size: 1.1mm\nOperational temperatures: -30°F to 250°F | -34°C to 121°C\nWeight: 0.5oz | 15g\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.","images":["https://cdn.shopify.com/s/files/1/0537/1177/files/BackpackerPenbyFisherSpacePenblack.jpg?v=1779308580","https://cdn.shopify.com/s/files/1/0537/1177/files/BackpackerPenbyFisherSpacePenblackopen.jpg?v=1779308580","https://cdn.shopify.com/s/files/1/0537/1177/files/BackpackerPenbyFisherSpacePenblackcase.jpg?v=1779308580","https://cdn.shopify.com/s/files/1/0537/1177/files/BackpackerPenbyFisherSpacePenblacklifestyle.jpg?v=1779308580","https://cdn.shopify.com/s/files/1/0537/1177/files/BackpackerPenbyFisherSpacePenblackpackaging.jpg?v=1779308580"],"price":38,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:42.647Z"},"share_url":"https://firestarter.network/l/lst__bPbPPA5","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__bPbPPA5' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Backpacker Pen by Fisher Space Pen' and a budget_max comfortably above $38.00 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."]}}