{"type":"firestarter.listing","listing":{"id":"lst_Tei6P7Eb","product_name":"Brush Pen (Grey)","category":"Pen","description":"Pentel Pocket Brush Pen (Gray)Brush PenPigmented InkPermanent, WaterproofRefillable, comes with two replacement ink cartridgesMade in Japan\nAnother one of our favorite drawing and watercolor tools.  This pen has a beautiful brush tip that comes to a wonderful fine point.  The ink is pigmented and waterproof, so this pen can be used for preliminary drawing or line-work that you then paint over. The brush tip allows all sort of mark-making, including light splatters.\nThis pen is an investment, but can last for years when you have refill cartridges always on hand, and if the cap is kept on!  A wonderful tool to push you outside of your comfort zone and inspire play.\nPlastic body.  \n**Please note**: Ink flow may be effected by extreme temperature changes, or changes in air pressure.  If bristles become clogged (as can happy with waterproof ink), remove the tip and rinse with warm water.\n \n© Greenleaf &amp; Blueberry 2020www.greenleafblueberry.com","images":["https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_2464_43e4fd84-0d44-4821-b075-922753f9e9cf.jpg?v=1601743998","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_2465.jpg?v=1601743998","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_2466.jpg?v=1601743998"],"price":24,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:24.609Z","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_Tei6P7Eb","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_Tei6P7Eb' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Brush Pen (Grey)' and a budget_max comfortably above $24.00 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."]}}