{"type":"firestarter.listing","listing":{"id":"lst_88_wUrUJ","product_name":"Keychron K4 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3","category":"Custom Keyboards","description":"\nKeychron K4 QMK Wireless Mechanical Keyboard (Version 3) allows anyone to master any keyboard keys or macro commands through Keychron Launcher web app, it has included keycaps for both Windows and macOS, and users can hot-swap with any MX mechanical switch in a breeze.\n\n\n No discount code can be used for the K4 Version 3.\n\n\n\n\n\n\nISO options: UK, German, Swiss, Nordic, French, and Spanish layouts.\n\n\n\n\n\n\nPlease drop your email on \"Notify Me When Available\" if the product model is out of stock.\n\n\n","images":["https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-UK-Aluminum-Red-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-UK-Aluminum-Brown-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-UK-Aluminum-Banana-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-DE-Aluminum-Red-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-DE-Aluminum-Brown-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-DE-Aluminum-Banana-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-Swiss-Aluminum-Red-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-Swiss-Aluminum-Brown-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-Swiss-Aluminum-Banana-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-Nordic-Aluminum-Red-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-Nordic-Aluminum-Brown-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-Nordic-Aluminum-Banana-Switch.jpg?v=1752899056","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-French-Aluminum-Red-Switch.jpg?v=1770805976","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-French-Aluminum-Brown-Switch.jpg?v=1770805976","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-French-Aluminum-Banana-Switch.jpg?v=1770805750","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron-K4-Version-3-QMK-Wireless-Keyboard-ISO-ES-Aluminum-Banana-Switch.jpg?v=1770805654"],"price":114.99,"currency":"USD","in_stock":true,"inventory_qty":119988,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:17.025Z"},"share_url":"https://firestarter.network/l/lst_88_wUrUJ","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_88_wUrUJ' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Keychron K4 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3' and a budget_max comfortably above $114.99 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."]}}