{"type":"firestarter.listing","listing":{"id":"lst_xYmDB5Bj","product_name":"Keychron K3 Ultra 8K Wireless Custom Mechanical Keyboard","category":"Slim Keyboards","description":"Keychron K3 Ultra 8K is an ultra-slim wireless custom mechanical keyboard. It supports 2.4 GHz, Bluetooth, and a wired connection. It allows users to customize any key or macro command on its 75% compact layout through the Keychron Launcher web app.  Powered by ZMK firmware, it enables an 8K polling rate in wireless mode while delivering up to 550 hours of battery life. In addition, it includes LSA (low-profile spherical-angled) keycaps and is fully compatible with Windows, macOS, and Linux.\n This product is a pre-sale item, and shipping is expected to begin in July.\n\n\n\n\nPlease enter your email under \"Notify Me When Available\" if the product model is out of stock.\n","images":["https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-MechanicalKeyboard-1.jpg?v=1774260926","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-MechanicalKeyboard-3.jpg?v=1774260926","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-MechanicalKeyboard-4.jpg?v=1774260926","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-MechanicalKeyboard-2.jpg?v=1774260926","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-MechanicalKeyboard-7.jpg?v=1774260926","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/K3-Ultra-8K-Wooden-Frame.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-MechanicalKeyboard-6.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-MechanicalKeyboard-8.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboar-Red.jpg?v=1778643053","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboar-Brown.jpg?v=1778642988","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboar-banana.jpg?v=1778643080","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboar-brown-white.jpg?v=1778643270","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboar-banana-white.jpg?v=1778643133","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboar-Red-white.jpg?v=1778643290","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboard-ISO-DE-Red.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboard-ISO-DE-Brown.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboard-ISO-DE-Banana.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboard-ISO-UK-Red.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboard-ISO-UK-Brown.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboard-ISO-UK-Banana.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboard-ISO-BO-Red.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboard-ISO-BO-Brown.jpg?v=1775880491","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K3-Ultra-8K-Wireless-Custom-Mechanical-Keyboard-ISO-BO-Banana.jpg?v=1775880491"],"price":109.99,"currency":"USD","in_stock":true,"inventory_qty":59994,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:16.806Z"},"share_url":"https://firestarter.network/l/lst_xYmDB5Bj","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_xYmDB5Bj' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Keychron K3 Ultra 8K Wireless Custom Mechanical Keyboard' and a budget_max comfortably above $109.99 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."]}}