Auto-copy
Have noct place trades for you each time a trader you choose does, on Predict and Perps.
Auto-copy places trades for you each time a trader you choose does, whether or not you have noct open. It works on Predict and Perps. noct sees each of their trades about half a second after it happens, whether they took the price or a limit order of theirs was filled.
On Predict, noct hears a trade the moment Polymarket sends it to be settled, before it's final on the blockchain. Very rarely (about 1 in 2,000 today) a trade fails to settle after that, so the trader never holds it. If you copied one, you're told, and your copy stays yours to keep or sell. If many trades start failing, or a trader has had one fail in the last day, noct waits the extra second for each of their trades to settle before copying.
When Polymarket restarts its matching engine for maintenance, a Predict copy is tried again for a few seconds; if Polymarket still isn't taking orders, the copy is skipped and you're told why.
Setting one up
On a trader's card, press Auto-copy and set:
- How much each copy is: on Predict a fixed amount, a share of their trade or a share of your balance; on Perps a fixed margin.
- The most per copy and in total: up to $250 and $2,500 to start.
- How far from their price you'll accept.
On Predict, when the trader sells, the same share of your copy is sold. On Perps a copy opens with your margin at their leverage (up to 10×), grows and shrinks with their position, and closes when they close. Their own take-profits and stops aren't copied.
More rules
Each is off until you set it:
| Rule | What it does |
|---|---|
| Price band (Predict) | Copy only their buys between two prices, say 20¢ to 80¢. |
| Buy at their price (Predict) | Your copy is a limit order at the price they paid. What's offered there fills now; the rest waits. |
| Take-profit | Close a copy once it's up that much (on Perps, on the margin in it). |
| Trailing stop | Once a copy has been in profit, close it when its gain falls that far from its best. A 20% trail on a copy that reached +50% closes it at +30%. |
| Least liquidity (Predict) | Skip markets with less than that in their book. |
| Cooldown | The least time between two copies into one market. Sells and closes always go through. |
Take-profits and trailing stops are checked every 30 seconds and close at market within your price allowance.
Watching your copies
Each copy, and each skip with its reason, shows up in your notifications and under Auto-copy in your portfolio: what each copy holds, its P&L, and its P&L today.
The key
Turning it on, your wallet authorises a key once per product: on Predict a Polymarket key, on Perps a Hyperliquid agent. noct keeps it, encrypted, on its servers so it can trade while you're away. It can trade and can never withdraw. Pause, change or stop any copy at any time, and revoke the key from Settings › Trading.
Copies are placed after the trader's own, so they can fill at a different price, in part, or not at all.