{"type":"firestarter.listing","listing":{"id":"lst_Ri_GuI6B","product_name":"Studio Fountain Pen: The Creative Writing Set","category":"product","description":"There’s something deeply satisfying about writing with a fountain pen.\nThe Studio Fountain Pen brings that feeling into everyday life – flexible nibs, refillable ink, and a design that feels as good as it looks. A simple pleasure you’ll keep reaching for.\nWhat’s included:\n\nStudio Fountain Pen (with Fine nib, ink cartridge and ink converter)\nSolid Brass Pen Rest\nJapanese Brush Tip\nCursive Italic Fountain Pen Nib\nExtra Fine Semi-Flex Fountain Pen Nib\n\n50ml Fountain Pen Ink\n\n\nSwitching to infinitely refillable pens has never been easier – and you’ll save 30% compared to buying individually.\n ","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FountainBundles_WEB.jpg?v=1777473811","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/studio-fountain-pen-all-colours.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/products/the-spark-a-fountain-pen-made-for-remarkable-creativity-preorder-828511.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/studio-fountain-pen-all-colours-annotated.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/solid-brass-pen-rest-with-studio-fountain-pen.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/fountain-pen-tip-japanese-brush-tip.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/studio-fountain-pen-tip-japanese-brush-tip.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/fountain-pen-nib-cursive-italic-b.png?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/fountain-pen-nib-semi-flex-gold.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/products/fountain-pen-ink-neptune-packaging-bottle-swatch.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/Fountain_Pen_Inks_flattened_0025_mulberry.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/products/fountain-pen-ink-deep-black-packaging-bottle-swatch.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/products/fountain-pen-ink-marianas-packaging-bottle-swatch.jpg?v=1772120449","https://cdn.shopify.com/s/files/1/0089/6129/4417/products/fountain-pen-ink-new-forest-green-packaging-bottle-swatch.jpg?v=1772120449"],"price":171,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:22.485Z"},"share_url":"https://firestarter.network/l/lst_Ri_GuI6B","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_Ri_GuI6B' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Studio Fountain Pen: The Creative Writing Set' and a budget_max comfortably above $171.00 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."]}}