Limit Orders
Place a buy or sell order at your target price. PredyX submits it to Polymarket's order book and it stays active until filled, cancelled, or expired.
How Limit Orders Work
Unlike market orders that execute immediately at the current price, a limit order rests on Polymarket's CLOB (Central Limit Order Book) at the price you specify. It fills when a counterparty is willing to trade at that price.
Placing a Limit Order
Find a market via /markets or /search, select it, then choose Buy or Sell → Limit Order. The bot will ask for:
| Parameter | Description |
|---|---|
| Price | Your limit price per share (e.g., 0.65 means you pay $0.65 for one YES share) |
| Amount | For BUY: USDC to spend. For SELL: number of shares to sell. |
| Expiration | Optional. How long the order stays active (see Time in Force below). |
Time in Force (TIF)
Controls how long a limit order stays active if not immediately filled:
| Type | Behavior |
|---|---|
| GTC — Good Till Cancelled | Stays open until filled or you cancel it. This is the default. |
| GTD — Good Till Date | Stays open until a specific date/time you set. |
| FOK — Fill or Kill | Must fill entirely and immediately, or is cancelled outright. |
| FAK — Fill and Kill | Fills whatever is available immediately; the rest is cancelled. |
Stop Loss Orders
A stop-loss automatically exits a position when the price falls to a level you define. To set one:
/positions → tap a position → Set Stop Loss → enter your trigger price and quantity.
When the market price drops to or below your trigger, PredyX places a market sell order for the specified shares.
Managing Open Orders
Open orders are visible in the positions menu. You can cancel any pending limit order from there — it will be removed from Polymarket's order book immediately.
Fees
Limit orders use the same 0.5% trade fee as market orders, charged after execution. See Fees & Pricing.