{"type":"firestarter.listing","listing":{"id":"lst_qIh0j-H3","product_name":"Wren - Tips (pack of 3)","category":"Wren","description":"Keep your Wren in top form with our tip replacements!\nThese smooth writing tips are perfect for everyday use. Crafted in Japan with exceptional quality, our standard Wren tips (the ones your pen arrived with) create a line width of around 0.3–0.5 and are designed for consistency and long-lasting performance. We also offer a finer Wren tip, which is a little more hard-wearing and produces a narrower 0.2–0.3 line.\nPair with our Reservoir &amp; Tip Containers to use different colours again and again.\n","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/Wren_StandardWritingTip.jpg?v=1782215556","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/Wren_FineWritingTip.jpg?v=1782215556","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/Wren_Tips_LS_SQ.jpg?v=1772110801"],"price":4,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.276Z"},"share_url":"https://firestarter.network/l/lst_qIh0j-H3","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_qIh0j-H3' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Wren - Tips (pack of 3)' 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."]}}