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Copy Trading

How to Configure Trader Bot Rules (Caps, Filters, Sizing)

How to configure Trader Bot rules on Polycopy: Max Per Trade, price and trade filters, Max Spread, safety limits, stop loss, and Mirror Sells.

Last updated September 14, 2026

1

Open bot settings

Open your Bots page, click the bot, then press Settings (the gear) on the bot's own page. That opens the Manage bot panel. When you create a bot, the main settings sit on the setup page in two sections you can open: Safety limits and Advanced settings. They use the same names as Manage bot.

2

Start from the baseline

Every new Trader Bot starts from one measured baseline. There is no trading behavior or setup route to pick. The trader you pick matters more than extra filters, so change as little as you need.

3

Set the copy size with Max Per Trade

Every copy is the same size: your Max Per Trade amount. It starts at $5, can't go lower, and can't be more than your budget. Copies never scale with the trader's bet. Max Per Trade sets YOUR order size. It never filters on the size of the trader's order.

4

Add filters if you want them

Advanced settings has four optional filters. Min Price and Max Price only copy buys where the trader paid inside that range, anywhere from $0.00 to $0.98. Min Win Rate only copies when the trader's win rate in that kind of trade is at or above your number. Min Days To Close skips markets that close within that many days. Min Win Rate and Min Days To Close are off until you enter a number. Whatever you set, the bot never pays more than 98¢ or less than 3¢ a share.

5

Leave Max Spread where it is

Max Spread is the widest order book a copy will buy into. It starts at 200 bps and can be set from 50 to 1000 bps. Thin markets are where copies lose money, so raising it buys more copies at a loss. Sells are never blocked by it.

6

Set safety limits

Safety limits holds Max exposure, Max Daily Loss and Circuit breaker. Max exposure starts at 100% of your budget. With Winnings set to Compound, it grows only when the bot wins. The circuit breaker starts at 50%. It measures the fall from the bot's highest value so far, not from what you put in, so a bot up 20% has to give that back before the countdown even starts. After launch, Manage bot adds more: Stop Loss and Take Profit per position (both off by default), Slippage Tolerance, Order Expiry, Capital Cooldown and Min Position. Mirror Sells is on by default: when the trader exits, your bot exits too. If the trader sells only part of a position, your bot sells the same share of yours. Polymarket will not take a sell under 5 shares, so on a small position that means selling 5 shares, or the whole position if fewer than 5 would be left. If several of your bots hold the same market, they sell together in one order and each bot still shows its own result. (Copy Score is measured on entries only, so it can never credit a trader's exit timing.)

7

Save and monitor

Save. Changes apply to future copies only. Positions already open keep the rules they were opened under. Give it a few days before judging. On a flat copy size the difference between settings is small, and the difference between traders is not.

8

If a change makes the bot go quiet

Tightening one thing at a time is the only way to tell which change did it. If you set filters, the usual culprits are Min Win Rate, a narrow Min Price and Max Price range, Min Days To Close, and a lowered Max Spread. Any one of them can filter out every signal. Relax them one at a time and watch the bot's status word. If it still won't trade, send us the bot name and the settings you changed at help@polycopy.app.

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