The question “can I run my bot here?” has a more useful answer than yes or no. Most prop firms do permit automated trading — the real question is whether your automation falls on the allowed side of a line every firm draws in roughly the same place. Get that line right and an EA is a legitimate tool; get it wrong and it’s an instant account-void.
The line every firm draws
Firms separate automation into two buckets:
- Legitimate automated strategies — an EA that trades trend, breakout or mean reversion, sized sensibly, that would make money on a real retail broker with real fills. These are widely allowed.
- Environment exploits — HFT, latency and price-feed arbitrage, tick-scalping that games quote delays, reverse arbitrage, and grid/martingale systems that disguise true risk. These are near-universally banned.
The logic is the same one behind how prop firms make money: most evaluation firms run a simulated or hedged environment, and any “edge” that only exists because the pricing is simulated is, from the firm’s side, indistinguishable from cheating. If your bot’s returns would evaporate on a live ECN account, expect it to be flagged.
The words to search for in the terms
Open the firm’s rules and search for five terms — this is where automated accounts actually die:
| Term in the rules | What it targets |
|---|---|
| HFT / high-frequency | Sub-second order rates, excessive trade counts |
| Latency / arbitrage | Profiting from feed delays or price mismatches |
| Tick scalping | Exploiting simulated fills on tiny moves |
| Copy trading | Same trades mirrored across multiple accounts |
| Martingale / grid | Hidden risk from averaging into losers |
If your strategy touches any of these, don’t guess — ask support in writing and keep the reply. A screenshot of an explicit “yes” is worth more than a forum opinion when a payout is on the line.
Copy trading: the avoidable groupwide void
The most common automated-account casualty isn’t a fancy HFT bot — it’s copy trading. Mirroring one strategy across several funded accounts (your own stack, or a paid signals group) concentrates identical, unhedgeable risk, and firms increasingly treat it as a coordinated exploit. Some allow it within limits; many ban it outright and void every linked account at once. If you plan to scale by running multiple accounts, confirm the copy-trading policy first — it interacts directly with how far you can push a scaling plan.
”Allowed” is not “hands-off”
Permission to automate never transfers responsibility. Your EA still has to respect the news-trading window, any weekend-holding limits, and above all the drawdown rules — and a bot with a bug can breach all three faster than you can react. Before you fund a live evaluation with an algo:
- Backtest and forward-test the exact ruleset — targets, daily loss, max drawdown — not just profitability. The pass simulator is a quick sanity check on whether the strategy’s win rate and sizing even clear the targets.
- Hard-code the firm’s limits into the EA (max daily loss, no trades in news windows, flat before weekend).
- Watch it live at small size before trusting it unattended.
Run automation like a risk manager, not a spectator, and pick a firm whose rules genuinely permit your approach — then an EA is just a disciplined version of a strategy you already trust.