The MQL5 Market has thousands of EAs. Maybe 5% are honest products with real (if modest) edges. The rest range from naive failures to outright fraud. The patterns are repetitive enough that you can filter most of the junk in under five minutes per listing.
Start with the marketing language. Specific claims are tells.
| Claim | What it really means |
|---|---|
| "99% win rate" | Almost certainly a martingale or grid system that never closes losing trades. Wins are tiny; losses are catastrophic when they finally come. |
| "Risk-free strategy" | Either a scam or a misunderstanding of what risk-free means. Every position-taking strategy has risk. |
| "Guaranteed monthly returns" | Securities fraud in most jurisdictions. Nobody can guarantee market returns. |
| "AI-powered" or "uses machine learning" | Sometimes true, usually meaningless marketing. Most "AI" EAs are linear regression with extra colour. |
| "Used by professional banks" | Almost never true. Banks build proprietary execution systems, not MT5 EAs. |
| "Holy grail" or "secret formula" | If it existed, the seller would deploy it privately rather than sell it for $200 on a marketplace. |
| "Limited copies available, price going up soon" | Standard urgency manipulation. There is no scarcity of digital files. |
This is the single most important filter. Honest EA sellers publish their EA running on a verified third-party tracker. The two standard ones:
What honest looks like:
What dishonest looks like:
Most "no-loss" or "guaranteed profit" EAs use one of two techniques: martingale (doubling lot size after losses) or grid (placing multiple positions at price intervals). Both work for a while; both eventually destroy accounts.
Tells in the trade history:
Martingale EAs can look fantastic for 6 to 18 months before a single bad week wipes everything.
Email the seller before purchase. Ask:
Honest sellers give direct answers. Scammers respond with marketing copy, deflect, or stop replying.
Even before contacting the seller, the MQL5 Market listing itself contains tells:
| Tell | What it suggests |
|---|---|
| Seller has 47 EAs listed, all marketed as different "systems" | Asset flipper, churning low-effort products. None are genuinely tested. |
| EA name contains "Pro", "X", "Ultimate", "Elite", or "AI" | Marketing-driven; no signal about content. Not a hard disqualifier, but raises the bar. |
| Listing was created 2 weeks ago, no reviews | You are the beta tester. Buy at your own risk. |
| Reviews are all 5-star with identical phrasing or one-word praise | Suspicious. Real reviews vary in tone, mention specific outcomes, and include criticism. |
| Backtest screenshots in the listing show 99% win rate or zero losing weeks | Curve-fit or martingale. See section 3. |
| "Risk-disclaimer" in tiny text says "results not guaranteed, do not represent live performance" | The seller knows the displayed results are misleading. The disclaimer is legal cover. |
| Recommended deposit is $10,000+ for "stable performance" | The strategy probably needs the buffer to survive its drawdowns. Smaller accounts blow up. |
The same playbook exists for trade signal services. The mechanic is different (the seller sends you trades to copy rather than an automated EA), but the lies are identical:
The same verification rule applies: ask for a MyFXBook or FXBlue track record. Refusal to provide one is the answer.
A newer variant: EAs marketed specifically to pass prop firm challenges (FTMO, Topstep FX, etc.). Many of these are tuned to take large risks during the evaluation phase, pass the targets in a few days, then collapse during the funded phase.
The prop firm itself collects the evaluation fee, the EA seller collects the EA fee, and the trader takes the loss. Both businesses are economically incentivised to sell evaluations and EAs respectively without caring about funded-phase performance.
Some scams are not even sold. Free EAs uploaded to MQL5 Code Base or random forums sometimes contain:
If the EA is provided only as compiled .ex5, you cannot audit it. If you must use a third-party EA, prefer source-available .mq5 from established authors.
MQL5 Market lets buyers return purchases under certain conditions. The official policy allows refunds within a limited window for products that do not function. It does not allow refunds because the EA lost money. This is reasonable from the marketplace's perspective and an important caveat from the buyer's.
Subscription-based signal services and EA rentals usually do not refund. Once you have paid for a month, that month is gone.
Rather than buying EAs, consider:
No. MetaQuotes runs a legitimate marketplace with review and refund systems. The scams are the sellers; the marketplace cannot vet whether a strategy is profitable.
A small number, yes. The qualifying criteria: verified live track record over 18+ months, transparent strategy description, modest claimed returns (10-30% annual), reasonable drawdown (under 30%), responsive seller who answers technical questions. Most EAs fail at least three of these.
Honest professional systems target 15 to 40% per year with controlled drawdown. Anything claiming 100%+ monthly is either martingale (will blow up) or fiction.
Generally no for retail buyers. The math of evaluation pass rates, EA fees, and prop fees rarely works out positively. Most buyers churn through multiple challenges paying fees with no funded account at the end.
Check who the third party is. MyFXBook and FXBlue are real. Random websites that look official but are run by the same seller are not third parties. If the verification badge is not clickable to an external account page, it does not count.