{"type":"firestarter.listing","listing":{"id":"lst_UiEpduhB","product_name":"Wren 3 Colour Mini Ink Refilling Set","category":"Wren","description":"\nMost pens offer ink cartridges in a limited selection of colours. I want to change that by bringing you a range of beautifully rich and distinctive inks – with no need to dispose of or replace an empty cartridge. This set comes with everything your need to swap the colour in your Wren over and over.\nHappy hues:\n\nMarmalade\nStrawberry Jam\nSunny Teal\n\nUnder the sea:\n\nMarianas\nNeptune\nLoch Ness\n\nWild Fruit:\n\nDamson\nMulberry\nRaspberry Sorbet\n","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/Wrenbundles7.jpg?v=1755084930"],"price":21,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:22.973Z"},"share_url":"https://firestarter.network/l/lst_UiEpduhB","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_UiEpduhB' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Wren 3 Colour Mini Ink Refilling Set' and a budget_max comfortably above $21.00 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."]}}