POST
/
info
L2 book snapshot
curl --request POST \
  --url https://api.hyperliquid.xyz/info \
  --header 'Content-Type: application/json' \
  --data '{
  "type": "l2Book",
  "coin": "ETH"
}'
[
  [
    {
      "px": "19900",
      "sz": "1",
      "n": 1
    },
    {
      "px": "19800",
      "sz": "2",
      "n": 2
    },
    {
      "px": "19700",
      "sz": "3",
      "n": 3
    }
  ],
  [
    {
      "px": "20100",
      "sz": "1",
      "n": 1
    },
    {
      "px": "20200",
      "sz": "2",
      "n": 2
    },
    {
      "px": "20300",
      "sz": "3",
      "n": 3
    }
  ]
]
You can only use this endpoint on the official Hyperliquid public API. It is not available through Chainstack, as the open-source node implementation does not support it yet.
The info endpoint with type: "l2Book" retrieves a Level 2 order book snapshot for a specific asset on the Hyperliquid exchange. This endpoint provides real-time market depth information showing the best bid and ask prices with their corresponding quantities and order counts.
Get your own node endpoint todayStart for free and get your app to production levels immediately. No credit card required.You can sign up with your GitHub, X, Google, or Microsoft account.

​
Parameters

​
Request body

  • type (string, required) — The request type. Must be "l2Book" to retrieve order book snapshot.
  • coin (string, required) — Asset identifier (simple names like “BTC”, “ETH” for perpetuals; spot format like “@107” for spot trades).
  • nSigFigs (integer, optional) — Optional field to aggregate levels to nSigFigs significant figures. Valid values are 2, 3, 4, 5, and null (full precision).
  • mantissa (integer, optional) — Optional field to aggregate levels. This field is only allowed if nSigFigs is 5. Accepts values of 1, 2 or 5.

​
Response

The response is an array containing exactly two arrays representing the order book sides:

​
Response structure

Array format: [bids, asks]
  • First array (index 0): Bid levels (buy orders) sorted by price descending
  • Second array (index 1): Ask levels (sell orders) sorted by price ascending

​
Level data structure

Each price level contains the following fields: Core level data:
  • px — Price level as a string for precision
  • sz — Total size (quantity) at this price level as a string
  • n — The number of different orders that comprise this level

​
Data limits and ordering

Response limits:
  • Maximum 20 levels per side (bids and asks)
  • Bids are sorted by price in descending order (highest to lowest)
  • Asks are sorted by price in ascending order (lowest to highest)
Price precision:
  • All prices and sizes are returned as strings to maintain precision
  • Actual precision depends on the asset’s tick size

​
Price aggregation options

Significant figures (nSigFigs):
  • 2 — Aggregate to 2 significant figures (e.g., 12000, 1200)
  • 3 — Aggregate to 3 significant figures (e.g., 12300, 1230)
  • 4 — Aggregate to 4 significant figures (e.g., 12340, 1234)
  • 5 — Aggregate to 5 significant figures (e.g., 12345, 1234.5)
  • null — Full precision (no aggregation)
Mantissa (only when nSigFigs is 5):
  • 1 — Round to nearest 1 (e.g., 12345)
  • 2 — Round to nearest 2 (e.g., 12344, 12346)
  • 5 — Round to nearest 5 (e.g., 12345, 12350)

​
Asset identification

Perpetual contracts:
  • Use simple asset names: “BTC”, “ETH”, “AVAX”, “SOL”
  • Represent standard perpetual futures contracts
Spot markets:
  • Use indexed format: “@107”, “@1”, etc.
  • Index corresponds to the spot pair position in the universe
  • Some assets may have remapped names in user interfaces

​
Order book interpretation

​
Understanding the data

Bid side (buyers):
  • Shows prices where buyers are willing to purchase
  • Higher prices indicate stronger buying interest
  • Sorted from highest price to lowest price
Ask side (sellers):
  • Shows prices where sellers are willing to sell
  • Lower prices indicate more competitive selling
  • Sorted from lowest price to highest price
Spread calculation:
  • Spread = Lowest ask price - Highest bid price
  • Tighter spreads indicate more liquid markets

​
Order count significance

Order count (n field):
  • Indicates market depth and liquidity at each level
  • Higher counts suggest more distributed interest
  • Single large orders vs. many small orders provide different market signals

​
Example request

Shell
curl -X POST \
  -H "Content-Type: application/json" \
  -d '{"type": "l2Book", "coin": "ETH"}' \
  https://api.hyperliquid.xyz/info

​
Example response

[
  [
    {
      "px": "19900",
      "sz": "1",
      "n": 1
    },
    {
      "px": "19800",
      "sz": "2",
      "n": 2
    },
    {
      "px": "19700",
      "sz": "3",
      "n": 3
    }
  ],
  [
    {
      "px": "20100",
      "sz": "1",
      "n": 1
    },
    {
      "px": "20200",
      "sz": "2",
      "n": 2
    },
    {
      "px": "20300",
      "sz": "3",
      "n": 3
    }
  ]
]

​
Use cases

The info endpoint with type: "l2Book" is essential for applications that need to:
  • Market making: Analyze current market depth to place competitive bid and ask orders
  • Trading algorithms: Make informed decisions based on order book liquidity and price levels
  • Price discovery: Understand current market sentiment and bid-ask spread
  • Liquidity analysis: Assess market depth and potential price impact of large orders
  • Trading interfaces: Display real-time order book data in trading applications
  • Execution optimization: Choose optimal order placement strategies based on current book state
  • Risk management: Evaluate market conditions before executing large trades
  • Arbitrage detection: Identify price discrepancies and trading opportunities
  • Market surveillance: Monitor for unusual order book patterns or liquidity changes
  • Quantitative analysis: Study market microstructure and order flow patterns
This endpoint provides essential Level 2 market data, enabling sophisticated trading strategies and real-time market analysis on the Hyperliquid platform.

Body

application/json
​
type
enum<string>
default:l2Book
required

The request type. Must be 'l2Book' to retrieve order book snapshot.

Available options:
l2Book
​
coin
string
default:ETH
required

Asset identifier (simple names like 'BTC', 'ETH' for perpetuals; spot format like '@107' for spot trades)

​
nSigFigs
enum<integer> | null

Optional field to aggregate levels to nSigFigs significant figures. Valid values are 2, 3, 4, 5, and null (full precision)

Available options:
2,
3,
4,
5
​
mantissa
enum<integer>

Optional field to aggregate levels. This field is only allowed if nSigFigs is 5. Accepts values of 1, 2 or 5

Available options:
1,
2,
5

Response

200 - application/json

Successful response with L2 order book data

Array containing two arrays: [bids, asks]. Each side contains up to 20 price levels.