f.xyz

fxyz is an AI trading agent called F. You tell F what you think is happening in the market, like "oil stays expensive this winter" or "Bitcoin beats gold this year". F picks the stocks, crypto or commodities to trade, tests the idea and runs it for you.

Every idea starts with paper money. When you're ready, F trades from your own exchange account and can never withdraw funds.

Built by the team behind Polynomial ($9B+ traded). Backed by Archetype, Road Capital and Caballeros Capital.

Features

• Paper trading: test an idea with pretend money before using real funds.
• One place for every venue: trade on Hyperliquid, Lighter, Pacifica, Backpack and Binance from your own accounts.
• Custom tools from chat: build bots, dashboards and order types by describing them, like a bot that buys Nvidia every time Trump says "tariff" or a page that grades last month's trades.
• Trade panel: a direct order ticket for each venue with chart, orderbook, market, limit and executor orders.
• Discover: browse public dashboards, bots and order recipes. Star, fork and run them as your own.
• X integration: tag @fxyzai under any post on X and F tests the idea.

How fxyz uses Lighter

• Connected venue: users connect their Lighter account with an API key and trade Lighter markets through fxyz.
• Strategies from chat: strategies written in chat can run directly on Lighter.
• Trade panel: a direct Lighter order ticket with chart, orderbook, market, limit and executor orders.
• Trade-only access: fxyz can't withdraw, because Lighter sends withdrawals only to the account's L1 owner.
• Integrator fee: fxyz is a Lighter integrator and charges up to 1 bp on perps taker trades. Maker and spot trades carry no extra fee.