{"type":"firestarter.listing","listing":{"id":"lst_EFQujvM6","product_name":"Pen Case Inserts","category":"Pen Cases","description":"\nThese are the inserts for our modular products. These convert the glasses case into a 3 pen case. They fit in the New Penvelopes NP3, NP6, and NP12. The three pen also fits in our Fortis Backpack inner pockets, and the inner pocket of the Vagabond Notebooks. \n\n\nMade of soft cotton with a firm backing insert, with loops that go most of the length of the pens to keep them from touching each other. \nThe 3 pen insert is available in light brown, dark brown, or black. The 6 pen is available in light brown or black. \n\n \n\nDimensions:\n\n3-Pen = 2.5\" wide x 5.25\" tall.\n6-Pen = 5\" wide x 5.25\" tall.\nWill fit pens up to .65\" in diameter (like our M19) and length depends on outer case size.*Note that if you have pens made of ABS Plastic (Lamy Safari or Twsbi for instance) - that material can draw dyes out of many fabrics and stain pens after long insertion in pen cases. ABS Plastic is primarily used on inexpensive pens and is not an issue with most fine pens.","images":["https://cdn.shopify.com/s/files/1/0023/7679/4187/products/3PenInsertsblackbrown.jpg?v=1632420334","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/Black_3_pen_insert.jpg?v=1632420334","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/3penloopdarkbrown.jpg?v=1632420334","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/3peninsertdarkbrownwpens.jpg?v=1632420334","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/Black_6_pen_insert.jpg?v=1632420334","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/3peninsertVNbrown.jpg?v=1632420334","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/3PIinglassescase.jpg?v=1632420334","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/PV3BootBrownOpendesk.jpg?v=1632420334","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/3_pen_insert_light_brown.jpg?v=1632420334","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/6_pen_insert_light_brown.jpg?v=1632420456","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/3penlightvsdarkcomp.jpg?v=1632420519"],"price":8,"currency":"USD","in_stock":true,"inventory_qty":49995,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:20.748Z"},"share_url":"https://firestarter.network/l/lst_EFQujvM6","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_EFQujvM6' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Pen Case Inserts' and a budget_max comfortably above $8.00 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."]}}