> For the complete documentation index, see [llms.txt](https://docs.prophetmarket.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.prophetmarket.ai/reference/limits-and-guardrails.md).

# Limits and guardrails

*Every constraint on the platform, and the reasoning behind it.*

Prophet imposes a small number of limits. Each exists for a stated reason, and most of them protect traders rather than the platform. They are listed here with the reasoning so you can judge them for yourself.

**Per trade size limits**

Depend on the liquidity of the market and the status of your account. They prevent a single trade from moving a thin market so far that later traders receive bad fills.

**Rate limits on order placement**

Prediction markets attract high frequency scripts that would otherwise dominate the book at the expense of people trading by hand. Small cooldowns level that field.

**Sixty second cooldown between verification emails**

Throttles automated abuse of the email service and protects the sending reputation Prophet needs to keep verification messages out of spam folders.

**Withdrawal destination locked at signing**

You commit to a specific address when you sign. This prevents a compromised session from redirecting a withdrawal that is already in flight.

## What is deliberately not limited

{% hint style="info" %}
**Holding YES and NO on the same market is allowed**

This is a feature rather than a guardrail. The two are treated as independent positions, which is what makes hedging possible without closing your original position.
{% endhint %}

There is also no penalty for winning. Positions are on chain tokens settled by contract, so there is no mechanism by which consistent profitability could restrict your account.

## Working within the limits

* Split large positions across several limit orders rather than one market order.
* In thin markets, name your price and let the order rest instead of accepting whatever is available.
* If an order is rejected on size, check the market's depth before assuming the limit is the problem.


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