> For the complete documentation index, see [llms.txt](https://worldxc.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://worldxc.gitbook.io/docs/product/spot-trading-and-fees.md).

# Spot Trading & Fees

Spot trading is the core market function of WorldX’s early stage.

<figure><img src="/files/sdwwEhmpHZAYuxhhcRCT" alt=""><figcaption></figcaption></figure>

#### Purpose

Spot trading must be:

* Deterministic and fair
* Transparent in fees and outcomes
* Auditable through user records
* Resilient during volatility with defined behavior

#### Matching Rules

WorldX commits to:

* Publish matching priority logic (e.g., price-time or equivalent)
* Not introduce hidden execution rules without a changelog
* Provide consistent behavior under normal conditions

#### Order Lifecycle

Users can always see:

* Order creation time
* Order status transitions (open, partially filled, filled, cancelled, rejected)
* Fills and average price
* Fees applied per fill
* Reason codes for rejections/cancellations where applicable

#### Fee Transparency Rules

WorldX commits that:

* The fee schedule is published and versioned
* Fees are itemized per trade
* Tier rules are documented
* Promotional fee changes have effective dates and changelog entries

#### Edge Cases and Stress Behavior

A GitBook-grade exchange doc must define:

* Behavior if the market order exceeds the liquidity depth
* Behavior during maintenance windows
* Behavior during partial outages (read-only mode vs trading disabled)
* Cancellation guarantees during disruptions
* How users are notified when trading is impacted

WorldX treats these behaviors as part of trust: ambiguity is where disputes and fear begin.