{"type":"firestarter.listing","listing":{"id":"lst_3gsVunQi","product_name":"Mechanical Pencil Leads - Packs of 12","category":"Mechanical pencil","description":"Elevate your writing and drawing experience with these premium pencil leads, crafted by the trusted names of Schmidt (HB) and Pentel (B, 2B, 4B, H, 2H, Red, and Blue). Renowned for their commitment to excellence, these leads deliver flawless performance, whether you’re sketching, writing, or doodling your next big idea.\nChoose from the sharp precision of the 0.5mm lead for finer details or the slightly bolder 0.7mm option for a smoother, more expressive flow. Both variations are expertly engineered to ensure effortless creativity on the page, giving you the freedom to bring your imagination to life with every stroke.\nAll leads are compatible with our Tom's Studio Mechanical Pencil. ","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/mechanical_pencil_leads_GRP_SQ.webp?v=1733836249","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/mechanical_pencil_lead_Black_LS_SQ.jpg?v=1733836462","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/mechanical_pencil_lead_Black_LS_SQ.png?v=1733836509","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/mechanical_pencil_lead_LS_SQ.webp?v=1733836561"],"price":4,"currency":"USD","in_stock":true,"inventory_qty":129987,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.689Z"},"share_url":"https://firestarter.network/l/lst_3gsVunQi","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_3gsVunQi' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Mechanical Pencil Leads - Packs of 12' and a budget_max comfortably above $4.00 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."]}}