Cancel order by cloid | Hyperliquid exchange

Cancels one or multiple open orders by client order ID (cloid) on the Hyperliquid exchange. Chainstack Hyperliquid exchange reference.

POST /exchange

Cancel order by cloid

cURL

curl --request POST \
  --url https://api.hyperliquid.xyz/exchange \
  --header 'Content-Type: application/json' \
  --data '
{
  "action": {
    "type": "cancelByCloid",
    "cancels": [
      {
        "asset": 0,
        "cloid": "0x1234567890abcdef1234567890abcdef"
      }
    ]
  },
  "nonce": 1705234567890,
  "signature": {
    "r": "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
    "s": "0xfedcba0987654321fedcba0987654321fedcba0987654321fedcba0987654321",
    "v": 27
  },
  "vaultAddress": null
}
'

200

{
  "status": "<string>",
  "response": {
    "type": "<string>",
    "data": {
      "statuses": "<array>"
    }
  }
}

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. See Hyperliquid methods for the full availability breakdown.

This endpoint requires signature authentication. See our comprehensive Authentication via Signatures guide for implementation details.

Cancels one or multiple open orders by client order ID (cloid) on the Hyperliquid exchange. This is useful when you want to cancel orders using your own tracking IDs rather than the exchange-generated order IDs.

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Parameters

Required parameters

• action (object, required) — The cancel action object containing:

  • type (string) — Must be "cancelByCloid"
  • cancels (array) — Array of cancel objects with:
    • asset (number) — Asset index
    • cloid (string) — Client order ID (128-bit hex string, e.g., 0x1234567890abcdef1234567890abcdef)

• nonce (number, required) — Current timestamp in milliseconds (must be recent)

• signature (object, required) — EIP-712 signature of the action

Optional parameters

• vaultAddress (string, optional) — Address when trading on behalf of a vault or subaccount
• expiresAfter (number, optional) — Timestamp in milliseconds after which the request is rejected

Returns

Returns an object with cancellation status:

• status — "ok" if request processed
• response — Contains cancellation details:
  • type — "cancelByCloid"
  • data.statuses — Array of status results for each cancellation attempt

Example request

cURL

curl -X POST https://api.hyperliquid.xyz/exchange \
  -H "Content-Type: application/json" \
  -d '{
    "action": {
      "type": "cancelByCloid",
      "cancels": [{
        "asset": 0,
        "cloid": "0x1234567890abcdef1234567890abcdef"
      }]
    },
    "nonce": 1234567890123,
    "signature": {...}
  }'

Client Order ID (cloid)

The client order ID is a 128-bit hexadecimal string that you provide when placing an order. It allows you to:

• Track orders using your own identification system
• Cancel orders without needing to store exchange-generated order IDs
• Implement idempotent order placement strategies

Example cloid format: 0x1234567890abcdef1234567890abcdef

Use cases

• Custom order tracking — Cancel orders using your internal order management system IDs
• Failover systems — Cancel orders without needing to query order IDs first
• Multi-system integration — Use consistent order IDs across different systems
• Idempotent operations — Safely retry cancellations using deterministic IDs

Client order IDs must be unique per user. Attempting to place an order with a duplicate cloid will be rejected.

Make sure to store the cloid when placing orders if you plan to use this cancellation method. The cloid must match exactly what was provided during order placement.

Body

application/json

action · object · required

Show child attributes

nonce · integer · required

Current timestamp in milliseconds

signature · object · required

EIP-712 signature of the action with r, s, v components

Show child attributes

vaultAddress · string | null

Address when trading on behalf of a vault or subaccount (optional)

expiresAfter · integer

Timestamp in milliseconds after which the request is rejected (optional)

Response

200 - application/json

Cancellation result

status · string

Request status

response · object

Show child attributes