{"type":"firestarter.listing","listing":{"id":"lst_6L2SegHK","product_name":"Refill Leads for Mechanical Pencils - Various Sizes & Lead Grades","category":"Pencil","description":"Pentel Super Hi-Polymer Lead Refills for Mechanical PencilsSizes: 0.3, 0.4, 0.5, 0.7, 0.9mm Lead Grades: HB, HMade in Japan\n \nMechanical pencil refill leads.  The 0.3 leads are very fine and more prone to breakage than larger sizes, but are excellent for rendering fine details.  I prefer to use larger sizes for sketching or filling in larger areas, and finer sizes for detail work.\nHB is the lead grade that comes loaded in our Graphgear 1000 and 500 mechanical pencils. H is harder and therefore lighter.  If you want a lighter drawing H is very useful.\n \n ","images":["https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_1662_e7dca0ff-6b30-49f8-9e68-9a5974b9c661.jpg?v=1632344709","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_3598_98110769-1bb4-49aa-8a86-78a2fc894fdd.jpg?v=1632344707","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_3591_a84030d5-f64e-40f3-8576-a4241953faa9.jpg?v=1632344706","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_3590_cf07fedb-701b-4fea-a977-2e7bd64c86e5.jpg?v=1632344706"],"price":2,"currency":"USD","in_stock":true,"inventory_qty":79992,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.485Z","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_6L2SegHK","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_6L2SegHK' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Refill Leads for Mechanical Pencils - Various Sizes & Lead Grades' and a budget_max comfortably above $2.00 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."]}}