Do prop firms allow trade copiers?
Mostly yes, but the yes is narrow, and the details are where evaluations die. MirrorFill does not keep a list of which firms allow copiers: rules differ from firm to firm and change without notice, so the only answer that counts is your own firm's current published rules. Here is the pattern that holds across the industry, and what to check before you copy.
- Copying between accounts you own, in the same direction, is allowed at most futures prop firms. Many document copier workflows in their own help centers, and some firms and platforms even ship copier features of their own.
- Copying anyone else's trades is banned essentially everywhere. Signal services, "pass my eval for me" services, mirroring a friend's fills, trading another person's account: firms treat all of it as a breach, usually with closure of every account involved.
MirrorFill is built for the first case: it mirrors fills between accounts under your own logins. It does nothing to make the second case acceptable. A copier does not change whose trades they are.
What varies by firm
The own-accounts rule is common. Everything around it varies from firm to firm, and firms revise these rules often:
| Rule area | What your firm's rules may say |
|---|---|
| Account caps | A limit on how many accounts you may hold or copy between, sometimes counted across your whole household. Some firms fix the copy group once it is set up. |
| Approved-copier lists | Some firms permit only the copier products they have named in writing. If your firm keeps such a list, only the tools on it are allowed. |
| Hedging | Opposite-direction positions across your own accounts are commonly banned, often including mini/micro pairs and correlated instruments. |
| News | Anything from no restriction at all to hard flat windows around major releases such as FOMC, NFP and CPI, sometimes including working orders. |
| Automation and VPS | Anything from "copiers and bots are fine" to "all trading from your personal device, no VPS". |
| Connection fees | Some firms charge a monthly fee for connecting a third-party tool to your account. |
Where MirrorFill fits
MirrorFill copies at the platform level: if your firm's accounts run on Rithmic, Tradovate, or Volumetrica, they connect like any other account on that platform. Firms on platforms MirrorFill does not support, such as TopstepX/ProjectX, do not connect. See known limitations.
And to say it plainly: MirrorFill never guarantees any firm's approval. An account that connects is not an account your firm has cleared for copying: the connection is a platform question, the permission is your firm's. You are responsible for your firm's rules. We give you the controls; the rulebook stays yours.
Quick answers
Is copying between my own accounts "cheating"?
Not at most firms. Copying your own accounts in the same direction is widely allowed, and some firms and platforms build copiers of their own. What firms ban is copying other people. For your accounts, your firm's own rules decide.
Does MirrorFill keep a list of which firms allow copiers?
No. Firm rules change without notice, and a list would go stale the day a firm updated its terms. Your firm's own published rules are the only answer that counts: read them before you copy, and re-check when they change.
Does MirrorFill check my firm's rules for me?
No. It gives you controls (daily loss limits, max-contract clamps, blocked instruments), but it does not know your firm's rulebook. See who is responsible for a breach.