The **bfx‑hf‑strategy** library provides a Node.js framework for building, back‑testing, and deploying algorithmic trading bots on the Bitfinex exchange. It lets developers define event‑driven strategies with built‑in indicator handling that can run against historical data via `bfx‑hf‑backtest` and then be executed live with `bfx‑hf‑strategy‑exec`. It’s aimed at quantitative traders and developers who want to create custom Bitfinex strategies using JavaScript.