All terms
A bot buys before your swap and sells after it, taking the difference.
The bot sees your pending swap in the mempool. It buys the token first, pushing the price up, lets your trade execute at that worse price, then sells immediately after.
Your slippage tolerance sets the ceiling on how much they can take. A high tolerance is an open invitation.
Keep slippage as tight as the trade allows, and use protected routing like 1inch Fusion or a private relay for larger swaps.
Where to go next
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