{"type":"firestarter.listing","listing":{"id":"lst_pCH-XBf_","product_name":"The Studio Pocket Fountain Pen","category":"Fountain Pens","description":"Save 10% on the original Studio Pocket Fountain Pen, while stocks last, or explore our new and improved version 2.0 here.\nSmall but MIGHTY – introducing the Tom’s Studio Pocket Fountain Pen. This little pen packs quite a punch despite it’s diminutive size. Measuring 100mm when capped and a whopping 142mm posted, it feels like a full size pen perfect for all hand sizes. This is a zero compromise pocket pen with a fantastic selection of interchangeable nibs.\nBalance - As customers who have followed my work for some time know, I obsess over balance. I think it can really make or break a writing instrument. Which is why I’ve gone over the design and tweaked all of the materials and dimensions to get a balance that sits perfectly in the centre of the pen. Also, when posted (cap on the back of the pen) the extra length just gives you an extra bit of leverage to play with so that you can achieve a lightness of touch when practicing calligraphic upstrokes too.\nNo Limits - Traditional fountain pens often have a restricted grip area that’s next to an ‘ungrippable’ thread section. Personally I like to hold the pen closer to the nib when writing and further away when drawing. Which is why the Pocket Pen has a 50mm length with no interference.\nSustainability - As you know I’m a big advocate for creating products that last. Despite being an innately sustainable design, the fountain pen has an Achilles heel – the disposable ink cartridge – it’s incredibly convenient but once empty it’s unfortunately destined for landfill. So I’ve included a very handy ink syringe, this gives you the ability to refill your ink cartridges! It works by drawing up ink from a bottle of your choice which you can then fill your previous cartridge with!\nMicro-Grooves - Customer feedback (thanks folks!) has led me to machine tiny little grooves in the body of the pen. This means you get all the benefits of the anodised aluminium (longevity, colour weight) without a slippery grip.\nRoll stop - Octagons are t","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/studio-pocket-fountain-pen-all-colours.jpg?v=1745323565","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/studio-pocket-fountain-pen-ivy.jpg?v=1745323565","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/pocket-fountain-pen-ivy-with-ink.jpg?v=1745323565","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/studio-pocket-fountain-pen-all-colours-2.jpg?v=1745323565"],"price":98,"currency":"USD","in_stock":true,"inventory_qty":179982,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:22.372Z"},"share_url":"https://firestarter.network/l/lst_pCH-XBf_","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_pCH-XBf_' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy The Studio Pocket Fountain Pen' and a budget_max comfortably above $98.00 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."]}}