{"type":"firestarter.listing","listing":{"id":"lst_UuMwy2hs","product_name":"Waterproof Fountain Pen Ink Jars - Various Colors","category":"Pen","description":"Super5 Fountain Pen Replacement WATERPROOF Ink JarsColors:\nBlackGreyBlueGreenRedOrange\nBlack Ink is a classic choice for both writing and sketching.  Using Grey Ink allows you to layer and create subtle value scales.  The Super5 Grey Ink is a dark cool tone.  You can spice things up by using other colors.\nNotes for if you plan to use waterproof ink with your fountain 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 \n \nFor more information on this topic, please read our blog post here!\n \nIt is your responsibility to know your fountain pen and care for it appropriately, especially when using waterproof inks.  Greenleaf &amp; Blueberry cannot be held responsible for clogged fountain pens.  However, please feel free to contact us if you have any questions and we will do whatever we can to assist you!\n \n© Greenleaf &amp; Blueberry 2021www.greenleafblueberry.com","images":["https://cdn.shopify.com/s/files/1/1696/5931/files/IMG_4535.jpg?v=1689974773","https://cdn.shopify.com/s/files/1/1696/5931/files/IMG_4534.jpg?v=1689974773"],"price":9.95,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:22.239Z","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_UuMwy2hs","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_UuMwy2hs' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Waterproof Fountain Pen Ink Jars - Various Colors' and a budget_max comfortably above $9.95 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."]}}