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POST
/
placeOrder
Place Order
curl --request POST \
  --url https://api.hypereth.io/v2/hyperliquid/placeOrder \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '{
  "symbol": "<string>",
  "side": "buy",
  "type": "limit",
  "amount": "<string>",
  "price": "<string>",
  "clientOrderId": "<string>",
  "reduceOnly": true,
  "timeInForce": "GTC",
  "stopPrice": "<string>",
  "positionSide": "LONG",
  "orderExpiry": 123
}'
{
  "id": "1234567890",
  "clientOrderId": "0x1234567890abcdef1234567890abcdef",
  "symbol": "BTC",
  "side": "sell",
  "type": "limit",
  "status": "open",
  "price": "65000.0",
  "amount": "0.01",
  "filled": "0",
  "remaining": "0.01",
  "average": null,
  "reduceOnly": true,
  "positionSide": "SHORT",
  "createdAt": 1710000000000
}

Authorizations

​
X-API-KEY
string
header
required

Body

application/json
​
symbol
string
required

Unified market symbol

​
side
enum<string>
required
Available options:
buy,
sell
​
type
enum<string>
required
Available options:
limit,
market,
stop,
stop_market,
take_profit,
take_profit_market,
trailing_stop_market
​
amount
string
required

Order quantity

​
price
string

Required for limit orders

​
clientOrderId
string

Custom client ID. In Hyperliquid, it is an optional 128 bit hex string. In Aster, it can only be string following the rule ^[\.A-Z\:/a-z0-9_-]{1,36}$. In LighterDex, it must fit within i64.

​
reduceOnly
boolean
​
timeInForce
enum<string>
  • GTC: Good Till Canceled
  • IOC: Immediate or Cancel
  • FOK: Fill or Kill (Aster only)
  • GTX: Good Till Crossing (Post-only)
  • GTT: Good Till Time (requires orderExpiry)
Available options:
GTC,
IOC,
FOK,
GTX,
GTT
​
stopPrice
string

Required for stop/TP orders

​
positionSide
enum<string>
Available options:
LONG,
SHORT,
BOTH
​
orderExpiry
integer

Order expiry timestamp (milliseconds). Required for GTT orders

Response

200 - application/json

Order placed successfully

​
id
string

Exchange order ID

​
clientOrderId
string

Client order ID (if provided)

​
symbol
string

Trading symbol

​
side
enum<string>
Available options:
buy,
sell
​
type
enum<string>
Available options:
limit,
market,
stop,
stop_market,
take_profit,
take_profit_market,
trailing_stop_market
​
status
enum<string>
Available options:
open,
partial,
closed,
canceled,
expired,
rejected
​
price
string

Order price

​
amount
string

Order quantity

​
filled
string

Filled quantity

​
remaining
string

Remaining quantity

​
average
string | null

Average fill price

​
reduceOnly
boolean

Reduce-only flag

​
positionSide
enum<string>

Position side (hedge mode)

Available options:
LONG,
SHORT,
BOTH
​
timeInForce
enum<string>
  • GTC: Good Till Canceled
  • IOC: Immediate or Cancel
  • FOK: Fill or Kill (Aster only)
  • GTX: Good Till Crossing (Post-only)
  • GTT: Good Till Time (requires orderExpiry)
Available options:
GTC,
IOC,
FOK,
GTX,
GTT
​
stopPrice
string | null

Stop price for stop/TP orders

​
createdAt
integer

Creation timestamp

​
updatedAt
integer

Last update timestamp