0xArchive comparison · Hydromancer
Hydromancer is Hyperliquid-only data infrastructure: a paid API with live order-level books and wallet data, plus Reservoir, a free archive of Parquet files on S3. 0xArchive is a market data archive for Hyperliquid and Lighter that serves stored books, trades, funding and liquidations by time range. Pick Hydromancer for a free Hyperliquid archive or a live L4 feed. Pick 0xArchive for book history back to 2023, stored order-level books, or Lighter.
Facts about Hydromancer come from its own documentation and pricing, checked on 24 October 2026.
Hydromancer and 0xArchive side by side
| You need | Hydromancer | 0xArchive |
|---|---|---|
| Free historical files | Reservoir on S3, you pay transfer | Last 30 days free by API |
| Hyperliquid book history | 20 levels once a minute, start not stated | 20 levels a side from 15 Apr 2023 |
| Order-level book with wallets | Live, by REST and WebSocket | Stored from 10 Mar 2026 |
| Trades and fills | From 28 Jul 2025, with ADLs, builder and TWAP fills | Complete from 22 Mar 2025 |
| Candles | Down to one second | One minute to one week |
| Funding, open interest, liquidations | History by REST | Funding and OI from May 2023, liquidations from Dec 2025 |
| HIP-3 and HIP-4 markets | Both | Both |
| Lighter | Not stated | Trades from Jan 2025, order-level book from Mar 2026 |
| Price | Archive free, API from $300 a month | Free tier, Build $49 a month |
Hydromancer's free Reservoir archive covers Hyperliquid from July 2025
Reservoir is daily Parquet files in a requester-pays S3 bucket: fills including liquidations, ADLs, builder and TWAP fills, one-second candles, daily position snapshots, and 20-level book snapshots once a minute. It covers Hyperliquid perps, Spot, HIP-3 dexes and HIP-4 markets, with Hyperliquid data from 28 July 2025.
That is a strong free option for exploring Hyperliquid. The trade-offs are the window and the grain: a minute between book snapshots, and no stored order-level book listed.
Hydromancer's paid API streams order-level books live
From $300 a month, Hydromancer's API adds a live L4 book with the wallet on every resting order, as a REST snapshot refreshed each second and a WebSocket stream per block. It also serves funding, open interest and liquidation history, and HIP-4 outcome data. Its market-wide REST fills cover the last 24 hours.
0xArchive stores the book back to 2023 and order by order since March 2026
0xArchive has kept Hyperliquid's 20-level book since 15 April 2023, two years before the July 2025 start Reservoir gives for its Hyperliquid data. Since 10 March 2026 it also stores the order-level book with wallets, and serves the exact book at any timestamp by REST, WebSocket replay or Parquet export.
It covers Lighter in the same API, with trades from January 2025 and Lighter's order-level book (L3) from March 2026. The free plan covers the last 30 days on every venue, and Build opens the full archive for $49 a month.
When to use Hydromancer instead
1. You want free Hyperliquid files. Reservoir costs only S3 transfer, and its window from July 2025 already spans 15 months.
2. You need one-second candles. 0xArchive candles start at one minute.
3. You want daily wallet position snapshots as files. Reservoir publishes them every day.
The Hyperliquid and Lighter providers comparison puts Hydromancer next to seven other providers.
Route references
Use the REST reference for order books, trades, funding and liquidations, the Hyperliquid L4 reference for order-level books with wallets, the Lighter L3 reference for Lighter's order-level book, and venue coverage for each market's start dates.
For current API availability and plan details, use the Hyperliquid data API, data catalog, pricing, and status.