{"type":"firestarter.listing","listing":{"id":"lst_lQ16-FnV","product_name":"Fountain Pen, Various Sizes","category":"Pen","description":"Super5 Fountain PenSize: 0.7 ***Comes with 1 cartridge of WATER-SOLUBLE ink******Waterproof ink cartridges sold separately***\n \nAfter years of experimenting with different fountain pens for drawing, this one has quickly become my favorite.  I enjoy it for writing and sketching, and most specifically, I enjoy using it with waterproof ink for drawings I'm planning to watercolor over.\nThe pen itself contains a single cartridge of blue *water-soluble* ink, but waterproof ink cartridges are available separately in a variety of colors (more on the way).\nFeatures:\n\n\nSubtle stub tip.  This means that there is some line variation depending on which direction the pen is moving.  This tends to give handwriting a more elegant look.\n\n\nInternational cartridge compatible.\n\n\nConverter compatible\n\n\nSnap-on cap (not screw-on)\n\n\nCan be disassembled for cleaning\n\n\nPlastic barrel and cap\n\n\nMetal and glass section (part that holds the nib and feed)\n\n\n \nNotes for if you plan to use waterproof ink with this pen:\n\n\nUse your pen regularly\n\n\nStore pen with ink loaded\n\n\nClean pen if planning to store unused for a long period\n\n\nIf pen becomes clogged or stops writing, use room temperature water to flush through the system by rinsing, soaking, or lightly blowing it through\n\n\nWaterproof ink is more work to clean up than water-soluble, so extra care should be taken when using it.\n\nNib and feed can be removed from section (it is a friction fit).  Use care when removing so you don't poke your hand with the nib!\n\n \nI've selected this pen to carry and recommend based on it's nice balance of quality and utility, its compatibility with waterproof ink, and its ability to have maintenance done on it.\nFor more information on this topic, please read our blog post!\n \n** Replacement ink sold separately **\n \n© Greenleaf &amp; Blueberry 2021www.greenleafblueberry.com","images":["https://cdn.shopify.com/s/files/1/1696/5931/files/IMG_4533.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_22622.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_2364copy.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_22632.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_2365copy.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_2366copy.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_2367copy.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_2371_56ed4342-4521-47a1-81e3-68c33fbb0bb7.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/files/IMG_4532.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/files/IMG_4529.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/files/IMG_4530.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/files/IMG_4531.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/files/IMG_4526.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/files/IMG_4527.jpg?v=1689895751","https://cdn.shopify.com/s/files/1/1696/5931/files/IMG_4528.jpg?v=1689895751"],"price":39.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.364Z","product_rating":null,"product_rating_count":0,"seller_rating":null,"seller_rating_count":0,"units_sold":0,"reviews":{"count":0,"top":[]},"videos":[]},"share_url":"https://firestarter.network/l/lst_lQ16-FnV","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_lQ16-FnV' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Fountain Pen, Various Sizes' and a budget_max comfortably above $39.95 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."]}}