Hydromancer is a Hyperliquid data provider for teams building trading apps, bots, dashboards and research tools.

• REST API: positions (single wallets or batches of up to 1,000), orders, fills, funding, oracle prices, builder fills and liquidation history.

• WebSocket streams: trades, fills, orders, builder events and liquidations. Event streams can replay missed data when a client reconnects with its saved cursor.

• Order books: L2 snapshots, BBO and L4 order-level data.

• Reservoir: a free, requester-pays archive on AWS S3 with Hyperliquid fills, 1-second candles, and position and order book snapshots. It's stored as Parquet, so it works with standard tools like DuckDB, pandas or Spark.

Paid plans start at $300/month, and testnet access is included on every plan. 100+ teams build on Hydromancer data.

I'm on the Hydromancer team, so ask me anything about the API or the archive in the comments.