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\n\nSay hello to The Field Mouse – your go-everywhere, write-anywhere, infinitely refillable sidekick. Inspired by its folklore namesake, this tiny tool is made for moments when ideas strike and your usual pen is miles away. Hook it to your keys, your lanyard, or your bag, and you’ll never be caught scribble-less again.\n\n\nWe love it paired with our handmade Leather Key Fob – a beautiful blend of materials and craftsmanship.\n\nWhy you'll love it:\n\n\nKeyring-friendly with a solid brass loop lid\nPocket-sized, lightweight and ready for spur-of-the-moment notes or quick sketches\nFitted with a writing tip and refillable with any standard fountain pen ink\nComes in 5 joyful colours (plus that patina-loving brass top), solid Brass or Stainless Steel\n\n","images":["https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Blush_10.06.20252736.jpg?v=1772125446","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_FullRange-_Names1.jpg?v=1772125446","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/NEW_LeatherKeyFob_brass_b3571b24-e8f4-4ff7-808e-093c35a322c5.jpg?v=1772125446","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Brass-6.jpg?v=1772125446","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Brass-2.jpg?v=1772125446","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Brass_Box_D2C_Closed.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Brass-7.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Sage.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Sage-2.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Sage-7.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Sage_Open.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Sage-3.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Sage_Box_D2C_Closed.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Sage-8.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Brass-1.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Lilac_10.06.20252801.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Brass_Open.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Stainless_Open.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Blush_Open.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Stainless-2.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_SS_Box_D2C_Closed.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Stainless-1.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Lilac-2.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Lilac_Box_D2C_Closed.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Lilac-1.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Lilac_Open.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Blush-4.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Blush-3.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Blush_Box_D2C_Closed.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Blush-1.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Midnight_Box_D2C_1.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Ivy_Box_D2C_1.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_FullRange-3_f4e81d19-97f7-4007-86ae-c2a47bc310da.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Ivy_Box_D2C_Closed_1.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Midnight2.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Midnight_Box_D2C_Closed_1.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Ivy_Closed.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Ivy_Open.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Midnight_Closed.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_Midnight_Open.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/FIELDMOUSE_FullRange.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/NEW_LeatherKeyFob_blush.jpg?v=1770032906","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/NEW_LeatherKeyFob_brass_c42391c1-3b07-4cbf-ba86-624431a447fb.jpg?v=1770031687","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/NEW_LeatherKeyFob_ivy.jpg?v=1770031755","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/NEW_LeatherKeyFob_lilac.jpg?v=1770031822","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/NEW_LeatherKeyFob_midnight.jpg?v=1770031864","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/NEW_LeatherKeyFob_sage.jpg?v=1770031908","https://cdn.shopify.com/s/files/1/0089/6129/4417/files/NEW_LeatherKeyFob_SS6.jpg?v=1770031950"],"price":36,"currency":"USD","in_stock":true,"inventory_qty":299970,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:22.939Z"},"share_url":"https://firestarter.network/l/l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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_52tz0oEd' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy The Field Mouse – refillable travel pen' and a budget_max comfortably above $36.00 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."]}}