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Lighter is a separate top-level venue family, not a Hyperliquid namespace. Use /v1/lighter/* for Lighter market data, L2 depth, L3 order-level history, trades, candles, funding, open interest, liquidations, and reconstruction-oriented jobs. Lighter funding records are returnable, but currently served values must not be compared across venues or annualized pending normalization repair. Need the product view first? Explore Lighter data for coverage, datasets, and access paths, then use this page for the exact REST routes.

Route Groups

First Request

Lighter L2 matches the Hyperliquid order-book shape (px/sz/n as decimal strings; see the field dictionary). The difference is depth: Lighter also serves an order-level L3 book at /v1/lighter/l3orderbook/{symbol}, individual orders rather than aggregated levels, closer to Hyperliquid L4 than to L2.
Use Data quality before long Lighter history jobs, especially when reconstruction depends on depth continuity.

Choosing Depth

Use L2 order-book routes for price-level depth. Use the L3 route at /v1/lighter/l3orderbook/{symbol} for order-level detail or reconstruction; it returns individual orders, the Lighter equivalent of Hyperliquid L4. For long windows, begin with one bounded request, paginate deliberately, and store meta.request_id per page. Pair Lighter history with data-quality checks when the output feeds a backtest, model, alert, dashboard, or export.

Trades: Canonical Versus Preliminary

Lighter trade routes are two-tier. /v1/lighter/trades/{symbol} serves canonical history reconciled daily from the Lighter Foundation archive: rows marked source: "bucket", enriched with fields such as tx_hash, order_id, fee, and realized_pnl, with end clamped to the finalization watermark reported in meta.finalized_through. /v1/lighter/trades/{symbol}/recent serves preliminary live rows marked source: "ws" without that enrichment. Field sets and the clamp behavior are documented on Trades and Lighter Historical Data API. Lighter identity fields such as account_index are Lighter account indexes, not wallet addresses.

Lighter Request Checklist

Use this checklist before a Lighter workflow enters code, tests, or an agent task.

Generated Client Guidance

When the user says Lighter or Lighter.xyz, map to /v1/lighter/* and keep Lighter fixtures and data-quality checks in their own tests. If a generated client has one generic exchange string, confirm Lighter still resolves to the Lighter namespace rather than a relabeled Hyperliquid symbol. Open Order book routes for L2 versus L3 selection. Use Lighter Historical Data API for trade history: the earliest observed Lighter trade row is January 17, 2025, and exact starts vary by market. Use WebSocket replay when sequence matters, Lighter API Quickstart for a focused first request, or Best Market Data API for broader evaluation context.
Last modified on August 13, 2026