One prompt builds a Jane Street-style low-latency HFT system
The prompt has deterministic code own every quote and order, with Jev judging order-flow toxicity off the order path, and uses hftbacktest to replay ticks and check whether it beats a plain baseline.

Jane Street style low-latency hft system is f*cking online. paste this into claude code. this one prompt builds a low-latency trading system: -deterministic code owns every quote and order -jev judges order-flow toxicity, never in the order path -hftbacktest replays ticks with latency and queue position -jev stays only if it beats a plain baseline bookmark it right now.
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