{"type":"firestarter.listing","listing":{"id":"lst_doRANrfw","product_name":"3x5 Index Cards 50 Pack","category":"Paper","description":"This is a specially formulated paper designed for fountain pen use with these key elements:\n♦ Smooth♦ Resistant to feathering♦ Absorbent♦ Resistant to bleed throughThese cards are 100gsm made from sugar cane extract, are pH neutral, and acid free in a proprietary Franklin-Christoph formula. Acid free means it's good for archival purposes. These cards also work well with rollerball and ballpoint ink, as well as pencil.  Exterior Measurements   -  3\" tall x 5\" wide ruled or 5\" tall x 3\" wide ruled.\n ♦ 8mm spacing between lines. Lines are printed on both sides. \n ♦ pH neutral / acid free / archival♦ Note that this sugar cane paper can have a very light lavender hue in certain types of indoor light. Especially in comparison to bleached out copy paper. ","images":["https://cdn.shopify.com/s/files/1/0023/7679/4187/files/F-C5Tx3WRuledIndexCards.jpg?v=1741722115","https://cdn.shopify.com/s/files/1/0023/7679/4187/files/F-C3x5RuledCards.jpg?v=1741722115"],"price":4.25,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:20.638Z"},"share_url":"https://firestarter.network/l/lst_doRANrfw","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_doRANrfw' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 3x5 Index Cards 50 Pack' and a budget_max comfortably above $4.25 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."]}}