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The service provides a programmable interface to live and historical market data for the Hyperliquid, HIP‑3, and Lighter.xyz venues. Users can retrieve order‑book snapshots, trade records, liquidations, candles and other market metrics through REST endpoints, WebSocket streams, or language‑specific SDKs, and can also export bulk data for offline analysis. The API supports both real‑time feeds and replay of exact market windows, enabling incident review, sequencing and backtesting of trading strategies.

Target users include quantitative researchers, algorithmic traders, and developers building trading bots or AI agents that need high‑resolution order‑level depth and order‑flow information. The platform offers coverage of over 1,000 days of data across hundreds of instruments, with low‑latency responses (average under 50 ms) and high availability (99.9 % SLA). Replay can be accelerated up to 1,000 × speed, and the same authentication key works across live, replay, and SDK routes.

Distinctive aspects are the combination of live and replayable data for multiple venues, extensive order‑book depth (L2 and L4 snapshots), and ready‑to‑use client libraries in Python, TypeScript and Rust. Documentation includes example cURL calls and guides for integrating the API with AI models or automation tools.