Overview

The orders stream contains all order status updates from the Hyperliquid exchange. This includes order placements, cancellations, fills, rejections, and other lifecycle events.

Stream Type: ORDERS
API Availability: gRPC Streaming API + JSON-RPC/WebSocket APIs
Volume: Very High - Most frequent stream with 18+ different status types

Data Structure

Each block contains an array of order status events:

{
  "local_time": "2025-12-04T17:00:00.268701903",
  "block_time": "2025-12-04T17:00:00.083688002",
  "block_number": 817828537,
  "events": [
    {
      "time": "2025-12-04T17:00:00.268701903",
      "user": "0xeb6eda4756f831824cd28e568ef8adcff35016e3",
      "hash": "0x81598918a9303dff82d30430bf015102068e00fe44335cd12522346b683417ea",
      "builder": null,
      "status": "open",
      "order": {
        "coin": "ZEC",
        "side": "B",
        "limitPx": "356.42",
        "sz": "1.1",
        "oid": 258166303284,
        "timestamp": 1764867600268,
        "triggerCondition": "N/A",
        "isTrigger": false,
        "triggerPx": "0.0",
        "children": [],
        "isPositionTpsl": false,
        "reduceOnly": false,
        "orderType": "Limit",
        "origSz": "1.1",
        "tif": "Gtc",
        "cloid": "0x89119db7aae18b90abe620888af9aadc"
      }
    }
  ]
}

Event Fields

Field	Type	Description
time	string	Timestamp of the order status event (ISO 8601)
user	string	Ethereum address of the user who placed the order
hash	string|null	Transaction hash (null for rejected/canceled orders without blockchain tx)
builder	object|null	Builder information when order flow comes through a builder. Contains {"b": "builder_address", "f": fee_in_basis_points}. Null for direct orders.
status	string	Order status - see Order Statuses below
order	object	Full order details - see Order Object below

Order Object

Field	Type	Description
coin	string	Trading pair (e.g., "BTC", "ETH", "xyz:NVDA", "@162")
side	string	Order side: "B" (Buy) or "A" (Ask/Sell)
limitPx	string	Limit price as string
sz	string	Current order size (can be "0.0" if fully filled)
oid	integer	Unique order ID
timestamp	integer	Order creation timestamp (milliseconds since epoch)
triggerCondition	string	Trigger condition or "N/A" if not a trigger order
isTrigger	boolean	Whether this is a trigger/stop order
triggerPx	string	Trigger price (0.0 if not applicable)
children	array	Array of child orders (for complex order types)
isPositionTpsl	boolean	Whether this is a position-level TP/SL order
reduceOnly	boolean	Whether order can only reduce position
orderType	string	Order type: "Limit", "Market", etc.
origSz	string	Original order size at placement
tif	string	Time-in-force: "Gtc", "Alo", "Ioc", etc.
cloid	string|null	Client order ID (optional, for user reference)

Builder Orders

When order flow comes through a builder (MEV builder or order flow provider), the builder field contains structured information about the builder and associated fees.

Builder Object Structure:

Field	Type	Description
b	string	Builder Ethereum address (e.g., "0x999a4b5f268a8fbf33736feff360d462ad248dbf")
f	integer	Builder fee in basis points (e.g., 20 = 0.20%)

Example builder object:

{
  "b": "0x999a4b5f268a8fbf33736feff360d462ad248dbf",
  "f": 20
}

When is builder null vs populated?

• null: Direct orders placed by users without a builder intermediary
• populated: Orders that flow through builders, often for HIP-3 coins or MEV-related order flow

HIP-3 Coins: Orders for HIP-3 coins (identified by prefixes like vntl:, xyz:, etc.) commonly include builder information. Examples: vntl:SPACEX, xyz:NVDA, vntl:TRUMPWIN.

Filtering for builder orders:

// WebSocket - Get all orders with any builder
{"streamType": "orders", "filters": {"builder": ["*"]}}

// WebSocket - Get orders for specific builder
{"streamType": "orders", "filters": {"builder": ["0x999a4b5f268a8fbf33736feff360d462ad248dbf"]}}

// gRPC - Get all orders with any builder
{"builder": {"values": ["*"]}}

// gRPC - Get orders for specific builder
{"builder": {"values": ["0x999a4b5f268a8fbf33736feff360d462ad248dbf"]}}

Order Statuses

The following order statuses are observed in the dataset:

Success Statuses

These statuses indicate orders that have been successfully processed or are actively working on the exchange.

Status	Description
open	Order successfully placed and is active on the orderbook
filled	Order fully executed/filled
triggered	Trigger order condition met and order activated

Cancellation Statuses

Orders with these statuses were placed successfully but later canceled due to user action or system conditions.

Status	Description
canceled	Order canceled by user or system
marginCanceled	Order canceled due to insufficient margin
openInterestCapCanceled	Order canceled due to open interest cap reached
reduceOnlyCanceled	Reduce-only order canceled (likely position closed)
scheduledCancel	Order canceled on a scheduled basis
selfTradeCanceled	Order canceled to prevent self-trading
siblingFilledCanceled	Order canceled because a sibling order filled

Rejection Statuses

Orders with these statuses were rejected before being placed on the order book due to validation failures or risk constraints.

Status	Description
badAloPxRejected	ALO (Add Liquidity Only) order rejected due to bad price (would cross spread)
iocCancelRejected	IOC (Immediate or Cancel) order rejected/canceled
insufficientSpotBalanceRejected	Order rejected due to insufficient spot token balance
minTradeNtlRejected	Order rejected - notional value below minimum
oracleRejected	Order rejected due to oracle price issues
perpMarginRejected	Perpetual order rejected due to insufficient margin
perpMaxPositionRejected	Perpetual order rejected - would exceed max position size
positionFlipAtOpenInterestCapRejected	Order rejected - would flip position at OI cap
positionIncreaseAtOpenInterestCapRejected	Order rejected - would increase position at OI cap
reduceOnlyRejected	Reduce-only order rejected (would increase position)
tooAggressiveAtOpenInterestCapRejected	Order rejected - too aggressive near OI cap

Market Types

Orders can reference different market types via the coin field:

• Standard perpetuals: "BTC", "ETH", "SOL", etc.
• Prediction markets (XYZ): "xyz:NVDA", "xyz:AAPL", "xyz:TSLA", etc.
• Spot tokens: "@162", "@198", etc.

Time-in-Force (TIF) Types

TIF	Description
Gtc	Good-Till-Cancel (remains active until filled or canceled)
Alo	Add-Liquidity-Only (will only add to book, not cross spread)
Ioc	Immediate-or-Cancel (executes immediately or cancels)
FrontendMarket	Market order from frontend interface

Example Order Events

Open Order

{
  "time": "2025-12-04T17:00:00.268701903",
  "user": "0xeb6eda4756f831824cd28e568ef8adcff35016e3",
  "hash": "0x81598918a9303dff82d30430bf015102068e00fe44335cd12522346b683417ea",
  "builder": null,
  "status": "open",
  "order": {
    "coin": "ZEC",
    "side": "B",
    "limitPx": "356.42",
    "sz": "1.1",
    "oid": 258166303284,
    "timestamp": 1764867600268,
    "triggerCondition": "N/A",
    "isTrigger": false,
    "triggerPx": "0.0",
    "children": [],
    "isPositionTpsl": false,
    "reduceOnly": false,
    "orderType": "Limit",
    "origSz": "1.1",
    "tif": "Gtc",
    "cloid": "0x89119db7aae18b90abe620888af9aadc"
  }
}

Filled Order

{
  "time": "2025-12-04T17:00:00.475982103",
  "user": "0x4c96f9be0e7bd04bb2db2a5cdf0b8797be00b0da",
  "hash": "0xace6f472128f05e4ae600430bf19350202770057ad8224b650af9fc4d182dfcf",
  "builder": null,
  "status": "filled",
  "order": {
    "coin": "ZEREBRO",
    "side": "B",
    "limitPx": "0.036676",
    "sz": "0.0",
    "oid": 258174064171,
    "timestamp": 1764868092303,
    "triggerCondition": "N/A",
    "isTrigger": false,
    "triggerPx": "0.0",
    "children": [],
    "isPositionTpsl": false,
    "reduceOnly": false,
    "orderType": "Limit",
    "origSz": "2858.0",
    "tif": "Gtc",
    "cloid": null
  }
}

Rejected Order

{
  "time": "2025-12-04T17:00:00.105982103",
  "user": "0x1234567890abcdef1234567890abcdef12345678",
  "hash": null,
  "builder": null,
  "status": "perpMarginRejected",
  "order": {
    "coin": "BTC",
    "side": "B",
    "limitPx": "95000.0",
    "sz": "10.0",
    "oid": 258166123456,
    "timestamp": 1764867600105,
    "triggerCondition": "N/A",
    "isTrigger": false,
    "triggerPx": "0.0",
    "children": [],
    "isPositionTpsl": false,
    "reduceOnly": false,
    "orderType": "Limit",
    "origSz": "10.0",
    "tif": "Gtc",
    "cloid": null
  }
}

Order with Builder

{
  "time": "2025-12-04T17:15:23.456789012",
  "user": "0xabc123def456789abcdef0123456789abcdef012",
  "hash": "0x789abc123def456789abcdef0123456789abcdef0123456789abcdef012345678",
  "builder": {
    "b": "0x999a4b5f268a8fbf33736feff360d462ad248dbf",
    "f": 20
  },
  "status": "open",
  "order": {
    "coin": "vntl:SPACEX",
    "side": "B",
    "limitPx": "125.50",
    "sz": "50.0",
    "oid": 258166987654,
    "timestamp": 1764868523456,
    "triggerCondition": "N/A",
    "isTrigger": false,
    "triggerPx": "0.0",
    "children": [],
    "isPositionTpsl": false,
    "reduceOnly": false,
    "orderType": "Limit",
    "origSz": "50.0",
    "tif": "Gtc",
    "cloid": "0x12345678abcdef1234567890abcdef12"
  }
}

API Usage

gRPC Streaming

// Subscribe to orders
const request = {
  subscribe: {
    stream_type: 'ORDERS',
    filters: {
      "user": {"values": ["0x123..."]},
      "coin": {"values": ["BTC", "ETH"]},
      "status": {"values": ["open", "filled"]},
      "builder": {"values": ["*"]}  // Filter for orders with any builder
    }
  }
};

JSON-RPC

# Get latest order blocks
curl -X POST https://your-endpoint.hype-mainnet.quiknode.pro/your-token/hypercore \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "hl_getLatestBlocks",
    "params": {
      "stream": "orders",
      "count": 10
    },
    "id": 1
  }'

WebSocket

// Subscribe to orders
ws.send(JSON.stringify({
  "method": "hl_subscribe",
  "params": {
    "streamType": "orders"
  }
}));

Important Notes

• High Volume: Orders stream has the highest event frequency - use filtering for specific users/coins
• Order Lifecycle: Track complete order lifecycle from placement to completion/cancellation
• Status Importance: Different status types indicate various success/failure conditions
• Partial Fills: sz field shows remaining size, origSz shows original order size
• Hash Field: null for rejected orders that don't reach the blockchain
• Client Order IDs: Use cloid for tracking your own orders

Related Streams

• Trades - See the actual fills that result from these orders
• Book Updates - See how open orders affect the order book
• Events - View system events that may cause order cancellations