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Slippage Tolerance Mechanisms Meaning

This is a user-configurable "Safety Setting" in a crypto wallet or trading interface that defines the maximum amount of price movement a user is willing to accept for their trade. If you set your tolerance to 1%, and the market moves such that you would receive 1.1% less than the quoted amount, the smart contract will Abort the transaction and return your funds (minus the gas fee).Technically, the "Slippage Tolerance" is passed as a parameter to the smart contract function (e.g., min_tokens_out).

The contract calculates the current price at the exact moment the transaction is processed on-chain. If the current price is worse than the "Minimum Acceptable" price, the transaction "Reverts." This is a vital defense against "Sandwich Attacks," where a bot pushes the price up just before your trade and sells immediately after.While a low tolerance (0.1%) provides the best price, it also increases the risk of a "Failed Transaction" during high volatility, which can be expensive in terms of gas fees.

Conversely, a high tolerance (5%+) ensures the trade goes through but leaves the user vulnerable to "Extracted Value" by bots.

Finding the "Sweet Spot" for slippage tolerance is one of the most important learning curves for new DeFi users.

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