Self-trade Prevention
Self-trade protection (STP) prevents you from trading against your own orders, helping you avoid unnecessary fees and maintain your position in the order book.
Why Use Self-Trade Protection?
Without STP, you might accidentally:
Match your own orders and pay fees on both sides
Lose your queue priority in the order book
Create wash trades that don't represent real market activity
Waste gas on trades that don't change your net position
STP Modes
🚫 NONE
Behavior: Allows self-trades without any restrictions
Use case: When you specifically want to allow trading against your own orders
Effect: Orders from the same address can match against each other
⚠️ EXPIRE_MAKER (default)
Behavior: Cancels your resting maker order when a self-trade would occur
Use case: When you want your new taker order to have priority
Effect:
Your existing maker order is cancelled
Your new taker order continues to match against other orders in the book
You avoid paying fees on self-trades
⏭️ SKIP
Behavior: Skips over your own orders during matching
Use case: When you want to preserve all your orders in the book
Effect:
Both orders remain active
The matching engine skips your own orders and continues to the next best price
You maintain your queue position for both orders
How It Works
When you place an order, the matching engine checks if any potential matches are from the same address. Based on your STP setting:
NONE: Proceeds with the match normally
EXPIRE_MAKER: Removes your maker order and continues matching
SKIP: Ignores your order and looks for the next best match
Last updated