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Amend Order

REQUEST
wss://ws-auth.kraken.com
amendOrderAuthentication Required

The amend request enables clients to modify the order parameters in-place without the need to cancel the existing order and create a new one.

  • The order identifiers assigned by Kraken and/or client will stay the same.
  • Queue priority in the order book will be maintained where possible.
  • If an amend request will reduce the order quantity below the existing filled quantity, the remaining quantity will be cancelled.

For more detail, see amend transaction guide.

Request​

MESSAGE BODY

event string required
Value: amendOrder
txid string
Example: OFGKYQ-FHPCQ-HUQFEK

The Kraken identifier for the order to be amended. Either txid or cl_ord_id is required.

cl_ord_id string
Example: 6d1b345e-2821-40e2-ad83-4ecb18a06876

The client identifier for the order to be amended. Either txid or cl_ord_id is required.

volume string
The new order quantity in terms of the base asset.
display_volume string conditional
Condition: iceberg orders only.

Defines the new quantity to show in the book while the rest of order quantity remains hidden.
Minimum value is 1 / 15 of remaining order quantity.

limit_price string conditional
Condition: For order types that support limit price only.

The new limit price restriction on the order.

To specify a relative price, this field can be prefixed by + or - to specify the order price as an offset relative to the market price.

  • + prefix: adds the amount to the reference price.
  • - prefix: subtracts the amount from the reference price.
  • % suffix: signifies the relative amount as a percentage, i.e., for a limit price 2% from last price use "+2%".
post_only boolean conditional
Condition: Optional parameter for limit price changes.
Possible values: [true, false]
Default value: false

Applies to limit_price changes in this amend transaction. If true, the limit price change will be rejected if the order cannot be posted passively in the book.

trigger_price string conditional
Condition: For triggered order types only

The new trigger price to activate the order.

To specify a relative price, this field can be prefixed by + or - to specify the order price as an offset relative to the market price.

  • + prefix: adds the amount to the reference price.
  • - prefix: subtracts the amount from the reference price.
  • % suffix: signifies the relative amount as a percentage, i.e., for a limit price 2% from last price use "+2%".
pair string
Example: TSLAx/USD

The symbol is required on amends for non-crypto pairs, i.e. provide the pair symbol for xstocks.

deadline string
Format: RFC3339
Example: 2022-12-25T09:30:59.123Z

Range of valid offsets (from current time) is 500 milliseconds to 60 seconds, default is 5 seconds. The precision of this parameter is to the millisecond. The engine will prevent this order from matching after this time, it provides protection against latency on time sensitive orders.

reqid integer
Optional client originated request identifier sent as acknowledgment in the response.
token string required
This is a authenticated request, a session token is required.

Response​

MESSAGE BODY

event string
Value: amendOrderStatus
amend_id string
The unique Kraken identifier generated for this amend transaction.
txid string
The Kraken identifier, if populated in the request.
cl_ord_id string
The client identifier, if populated in the request.
status string
Possible values: [ok, error]
reqid integer
Client originated identifier for the request that initiated this response.
errorMessage string
Error message for unsuccessful requests.