dYdX

A dYdX limit order begins in the trade box: choose Limit, select Buy or Sell, then enter the total trade size and limit price. An order only fills at that price or better. Market orders use immediate-or-cancel behaviour, so any unfilled remainder is cancelled. The amount entered changes the position by that size; it is not the intended final position balance.

To require maker execution, open Advanced, choose Good Til Time and enable Post-Only. An order that would immediately take liquidity is then cancelled. This distinction affects the fee as well as execution.

The published base tier below US$1 million of trailing 30-day volume is 0.01% maker and 0.05% taker, before eligible discounts. Open Portfolio, then Fees, for the current schedule and personal tier. Default software charges filled trades, not cancelled orders or a separate trading gas fee. Funding and margin still matter for perpetual positions.

Onboarding connects and links a wallet before depositing; email or social login can create one through Privy. The frontend excludes the United States, Canada, United Kingdom and other restricted jurisdictions.

Developers can read indexer data and subscribe to WebSocket updates, while trading actions use authenticated node-side workflows. That separation is useful for dashboards that only need market or account information.