Upcoming Changes

Delist instId request parameter in WS order operation channels

Last update: November 20, 2025

To reduce the latency of WS order operations, the following order operation channels have added the request parameter instIdCode, and the request parameter instId will be delisted in early February 2026.

Request Parameter Name	Type	Required	Description
> instIdCode	Integer	Conditional	Instrument ID code. If both `instId` and `instIdCode` are provided, `instIdCode` takes precedence.
> instId	String	Conditional	Instrument ID Will be deprecated on February 2026.

Note: Users can use the Get instruments interface to map instIdCode to instId.

OKX trading fee scheme update

Last updated: 2025/11/3

OKX will update the trading fee scheme for improved fee differentiation across tiers. Please refer to the announcement for more details.

Instruments endpoint/channel

Add a new response parameter groupId to indicate which group a specific symbol belongs to.

Response Parameters

Parameter	Type	Description
groupId	String	Instrument trading fee group ID Spot: `1`: Spot USDT `2`: Spot USDC & Crypto `3`: Spot TRY `4`: Spot EUR `5`: Spot BRL `7`: Spot AED `8`: Spot AUD `9`: Spot USD `10`: Spot SGD `11`: Spot zero `12`: Spot group one `13`: Spot group two `14`: Spot group three Expiry futures: `1`: Expiry futures crypto-margined `2`: Expiry futures USDT-margined `3`: Expiry futures USDC-margined `4`: Expiry futures premarket `5`: Expiry futures group one `6`: Expiry futures group two Perpetual futures: `1`: Perpetual futures crypto-margined `2`: Perpetual futures USDT-margined `3`: Perpetual futures USDC-margined `4`: Perpetual futures group one `5`: Perpetual futures group two Options: `1`: Options crypto-margined `2`: Options USDC-margined instType and groupId should be used together to determine a trading fee group. Users should use this endpoint together with fee rates endpoint to get the trading fee of a specific symbol. Some enum values may not apply to you; the actual return values shall prevail.

Response Example

{
    "code":"0",
    "msg":"",
    "data":[
      {
            "alias": "",
            "auctionEndTime": "",
            "baseCcy": "BTC",
            "category": "1",
            "ctMult": "",
            "ctType": "",
            "ctVal": "",
            "ctValCcy": "",
            "contTdSwTime": "1704876947000",
            "expTime": "",
            "futureSettlement": false,
            "groupId": "13"
            "instFamily": "",
            "instId": "BTC-USDT",
            "instType": "SPOT",
            "lever": "10",
            "listTime": "1606468572000",
            "lotSz": "0.00000001",
            "maxIcebergSz": "9999999999.0000000000000000",
            "maxLmtAmt": "1000000",
            "maxLmtSz": "9999999999",
            "maxMktAmt": "1000000",
            "maxMktSz": "",
            "maxStopSz": "",
            "maxTriggerSz": "9999999999.0000000000000000",
            "maxTwapSz": "9999999999.0000000000000000",
            "minSz": "0.00001",
            "optType": "",
            "openType": "call_auction",
            "preMktSwTime": "",
            "quoteCcy": "USDT",
            "tradeQuoteCcyList": [
                "USDT"
            ],
            "settleCcy": "",
            "state": "live",
            "ruleType": "normal",
            "stk": "",
            "tickSz": "0.1",
            "uly": "",
            "instIdCode": 1000000000
        }
    ]
}

Get fee rates endpoint

Add new response parameter feeGroup. Fields that will be deprecated: maker, makerU, makerUSDC, taker, takerU, takerUSDC.
- Get fee rates

Response Parameters

Parameter	Type	Description
feeGroup	Array of objects	Fee groups. Applicable to `SPOT/MARGIN/SWAP/FUTURES/OPTION`
> taker	String	Taker fee
> maker	String	Maker fee
> groupId	String	Instrument trading fee group ID instType and groupId should be used together to determine a trading fee group. Users should use this endpoint together with instruments endpoint to get the trading fee of a specific symbol.

Response Example

{
  "code": "0",
  "msg": "",
  "data": [{
    "category": "1", //Deprecated
    "delivery": "",
    "exercise": "",
    "feeGroup": [
        {
            "taker": "0.001",
            "maker": "0.0001",
            "groupId": "1"
        },
        {
            "taker": "0.01",
            "maker": "0.001",
            "groupId": "2"
        },
        {
            "taker": "0.1",
            "maker": "0.01",
            "groupId": "3"
        },
        ......
    ],
    "instType": "SPOT",
    "level": "lv1",
    "maker": "-0.0008", //Deprecated
    "makerU": "", //Deprecated
    "makerUSDC": "", //Deprecated
    "taker": "-0.001", //Deprecated
    "takerU": "", //Deprecated
    "takerUSDC": "", //Deprecated
    "ruleType": "normal",
    "ts": "1608623351857",
    "fiat": []
  }
  ]
}

2025-11-20

Added new request parameter instIdCode

Request Parameter Name	Type	Required	Description
> instIdCode	Integer	Conditional	Instrument ID code. If both `instId` and `instIdCode` are provided, `instIdCode` takes precedence.
> instId	String	Conditional	Instrument ID Will be deprecated on February 2026.

Note: You can use the Get instruments interface to map instIdCode to instId.

2025-09-03

Fiat deposits and withdrawals are supported.

2025-08-20

Unified USD orderbook revamp

To revamp unified USD orderbook, more details for the first type users, more details for the second type users. OKX delisted the Crypto-USDC trading pairs and upgrade the Crypto-USD trading pairs for accessibility to all users.

Users are categorized into two types based on their country or region, with varying solutions for each. If you get valid data from GET /api/v5/account/instruments?instType=SPOT&instId=BTC-USD, you belong to the first type users, if you get an empty array [] data from that URL, you belong to the second type.

If you are going to trade Crypto-USDC pairs after the revamp:
- The instId should be set to Crypto-USD, such as BTC-USD.
- The tradeQuoteCcy is used to determine the settlement quote currency and must be set as USDC.
- The value for tradeQuoteCcy should be one of the enumerated values from tradeQuoteCcyList, which can be obtained from the endpoint Get instruments (private).
What you need to do:
- For the first type users:
  - Regarding Trade, Algo Trading and and in Block Trading, you currently have two options to trade Crypto-USDC. The first option is to trade directly with "instId": "Crypto-USDC" without specifying tradeQuoteCcy. The second option is to trade using "instId": "BTC-USD" with "tradeQuoteCcy": "USDC". The first option will not be available after the revamp. For more details, please refer to the Example 1 below.
- For the second type of users, you are allowed to trade only with "instId": "Crypto-USDC" before the revamp. Afterward, you must use "instId": "Crypto-USD" with "tradeQuoteCcy": "USDC".
- When trading Crypto-USDC after the revamp, Get maximum available balance/equity and Get maximum order quantity will also need to use "instId": "BTC-USD" with "tradeQuoteCcy": "USDC".
- For market data related Crypto-USDC and Crypto-USD trading, after the revamp, they will share the same order book, both using "instId": "Crypto-USD", such as BTC-USD. The tradeQuoteCcy is not supported.

Example 1: Placing an order with BTC-USDC:

Type	Before upgrading	After upgrading
Operation	Trading `BTC-USDC`	Trading `BTC-USDC`
Request fields for `"op": "order"`	First option: { "instId": "BTC-USDC", "tradeQuoteCcy": "" } Second option: { "instId": "BTC-USD", "tradeQuoteCcy": "USDC" }	Only option: { "instId": "BTC-USD", "tradeQuoteCcy": "USDC" }
Response body from Get instruments (private)	[ { "instId": "BTC-USDC", "tradeQuoteCcyList": ["USDC"], ...... }, { "instId": "BTC-USD", "tradeQuoteCcyList": ["USD", "USDC"], ...... } ]	[ { "instId": "BTC-USD", "tradeQuoteCcyList": ["USD", "USDC"], ...... } ]

2025-08-14

MARGIN and OPTION trading are permitted in specific countries and regions.

2025-07-08

Open API supports Unified USD Orderbook

For more details, please refer to Unified USD Orderbook FAQ

Added new request parameter

Parameter	Type	Required	Description
tradeQuoteCcy	String	No	The quote currency used for trading. Only applicable to `SPOT`. The default value is the quote currency of the `instId`, for example: for `BTC-USD`, the default is `USD`.

Added new response parameter
- Get instruments (private)
- Get instruments (public)

Parameter	Type	Description
tradeQuoteCcyList	Array of strings	List of quote currencies available for trading, e.g. ["USD", "USDC"].

Added new response parameter

Parameter	Type	Description
tradeQuoteCcy	String	The quote currency used for trading.

Trades channel adds seqId field

WS / Trades channel

Parameter	Type	Description
data	Array	Subscribed data
> seqId	Integer	Sequence ID of the current message.

Note: The seqId may be the same for different trade updates that occur at the same time.

2025-07-02

Added new endpoint
- Get asset bills history
Added new response parameter
- Get asset bills details

Parameter	Type	Description
notes	String	Notes

2025-06-26

Futures and swap trading are permitted in specific countries and regions.

2025-06-24

Added new endpoint
- Withdrawal

2025-05-28

Added endpoints. Bills details (since 2021) endpoints below have been released in production
- Apply bills details (since 2021)
- Get bills details (since 2021)

2025-04-17

Added endpoints
Added new error codes

Error code	Error Message
59515	You are currently not on the custody whitelist. Please contact customer service for assistance.
59516	Please create the Copper custody funding account first.
59517	Please create the Komainu custody funding account first.
59518	You can’t create a sub-account using the API; please use the app or web.
59519	You can’t use this function/feature while it's frozen, due to: {freezereason}

2024-09-18

Added new endpoints:
- GET / Announcements
- GET / Announcement types