{"type":"firestarter.listing","listing":{"id":"lst_j7HlIXsO","product_name":"Keychron B4 Pro Ultra-Slim Wireless Keyboard","category":"Slim Keyboards","description":"Keychron B4 Pro is a 96% ultra-slim wireless keyboard. It supports 2.4 GHz, Bluetooth 5.2, and a wired connection. \nNo discount code can be used for the B4 Pro. \n\nPlease drop your email on \"Notify Me When Available\" if the product model is out of stock. ","images":["https://cdn.shopify.com/s/files/1/0059/0630/1017/files/B4-Pro-Iconic-Features_a6c5bd78-5c32-4f1a-869b-d80f0e154524.jpg?v=1761530378","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/B4-Pro-Scissor-Mechanism.jpg?v=1761532988","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/B4-Pro-Uninterrupted-Usage-Time.jpg?v=1761530378","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/B4-Pro-Ultra-lightweight-Design.jpg?v=1761533012","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/B4-Pro-Triple-Connection-Modes.jpg?v=1761533030","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/B4-Pro-Launcher-Customization.jpg?v=1761530378","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/B4-Pro-Ultra-Slim-Wireless-Keyboard-SpaceGray.jpg?v=1761546595","https://cdn.shopify.com/s/files/1/0059/0630/1017/files/B4-Pro-Ultra-Slim-Wireless-Keyboard-Ivory-White.jpg?v=1761546609"],"price":39.99,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:16.978Z"},"share_url":"https://firestarter.network/l/lst_j7HlIXsO","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 ","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_j7HlIXsO' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Keychron B4 Pro Ultra-Slim Wireless Keyboard' and a budget_max comfortably above $39.99 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."]}}