Scenario Before After "post-only" order placement failure (price crosses the BBO and is canceled) "state: live" → "state: canceled" Only "state: canceled" (no "state: live") "post-only" order placed successfully "state: live" pushed immediately "state: live" (delayed ~1 ms) "post-only" order placed successfully, then filled by one taker order "state: live" → "state: filled" "state: live" (delayed ~1 ms) → "state: filled" "post-only" order placed successfully, then filled by multiple partial fills

And if he/she switches the margin mode from cross to fixed under the BTC and ETH futures contract page, and enables auto-margin only under the BTC futures contract page, auto-margin will only applies to BTC contract. By providing our customers a better variety of trading options, we hope that we can offer a better experience for everyone to optimize their strategy. Regards, OKX Oct 31, 2018

Useful in volatile markets.Advanced Limit Orders There are three types of Advanced Limit Orders: Post Only Fill or Kill Immediate or Canceli) Post only A Post only order ensures that your order is added to the order book and does not execute immediately. It will only be placed as a maker order. If your post-only order matches an existing order, your post-only order will be canceled.How do I place a Post only order?

Diamond Merchants in Indonesia can now enable a new trading rule for the 'P2P-Only Trader' user profile. Once enabled, users with this profile will not be able to place a buy order with them. Update your app to the latest version to access this feature. Who is a P2P-Only Trader? A P2P-Only Trader has traded exclusively on P2P and has not used any other OKX trading products. How to enable this trading rule? Enable the 'P2P-Only Trader' rule in trading rules when creating verification sell ads.

To use watch-only wallet, you can: Select Portfolio, then under PnL Analysis select Watch-only Wallet > Add New Wallet, and enter the wallet address to add it. Compared with the blockchain browser, the advantage of watch-only wallet is: Multiple networks are aggregated in the same wallet without switching browsers of different networks. The watch-only wallet can not only display the assets on 80+ networks that OKX supported but also the asset allocation on different networks.

BTC-USDT only applicable to SPOT/MARGIN uly String Optional Underlying, e.g.

Get underlying index /api/v5/public/underlying - uly Get fee rates /api/v5/account/trade-fee uly maker taker makerUSDC takerUSDC When the uly parameter is set to USD, only the taker and maker values are available in the response parameters. When the uly parameter is set to USDC, only the takerUSDC and makerUSDC values are available in the response parameters. For instType = SWAP/FUTURES: When uly is set to BTC-USD, only the taker and maker values are available in the response parameters.

After adjustment: For the same contract, a user can only hold either 10x or 20x positions simultaneously for the same side. Therefore, if a 10x short position is opened, a user can still choose to open a 10x or 20x long position. It means that a user can only hold up to 2 positions in the same contract: long-(10x or 20x), short-(10x or 20x). The new settings will only apply to new open orders initiation.

The BBO and mark price are calculated from the organic order book only. Trading rules Order behavior Every RPI maker order is post-only. OKX rejects an RPI maker order that would cross a non-RPI order or the first visible opposite-side RPI order. Hidden RPI orders are not checked, so a new order may rest across a hidden opposite-side RPI order. Every accepted RPI order is matchable, and no organic order needs to exist first.

Platform Rules Participation implies acceptance of all campaign terms and conditions Only main accounts may participate; sub-accounts are not eligible Users may only participate in one campaign at a time. If multiple are entered, only the last registered one will count This campaign does not constitute financial advice, investment recommendation, or solicitation to trade Digital assets are highly speculative and volatile.

ELP orders can be placed by all users and match only with taker orders that are not placed through OpenAPI. By providing targeted liquidity, this program offers non-API users new economic incentives with price improvement and slippage reduction while maintaining transparency and market integrity across the platform. Key features of ELP orders: Order placement: All users can place ELP orders through OpenAPI. Post-only mechanism: Always act as maker orders, which adds liquidity to the order book.

Choosing early redemption also means you’ll only receive the crypto that you used to invest. For example, if you invested BTC, you’ll only be able to redeem BTC and won’t have the choice of redeeming in USDT. OKX team August 11, 2025

Crypto Buy and Sell Filtering Conditions (optional, not required) Target address’s buy value: filter by the target address’s buy amount (for example, follow only trades with > $100 value). Applicable to buy scenarios only. Market Cap (Mcap): filter tokens by market-cap range (for example, only buy tokens with Mcap between 1M and 2M). Applicable to buy scenarios only. Liquidity: filter tokens by liquidity range (for example, liquidity between 1K and 20K). Applicable to buy scenarios only.

Default to 60. investmentType Optional* base (FOR ENTER AND EXIT SIGNALS) Amount in base currency margin (FOR ENTER SIGNALS ONLY) Invested margin in quote currency contract (FOR ENTER SIGNALS ONLY) Fixed number of contracts percentage_balance (FOR ENTER SIGNALS ONLY) Based on the % of Available Balance (i.e., the margin available for opening new orders) percentage_investment (FOR ENTER SIGNALS ONLY) Based on the % of Active Investment in your bot Active Investment will typically be your initial invested

Our trading features won't be affected during maintenance, but historical data generated during this period will only be available after maintenance is complete.