Meaning
Programmatic protocols for the forced sale of collateral ensure that loan positions remain solvent without manual intervention. Smart contract liquidation executes automatically when the value of the security falls below a predefined threshold. This technology is a foundational element of decentralized finance platforms.
These protocols eliminate the delays associated with human decision making during market crashes.
Oracle Feed
Accurate price data is required for the code to determine the current value of the collateral. Smart contract liquidation relies on external data sources that provide real-time information to the blockchain. These feeds must be secure and resistant to manipulation to prevent accidental triggers.
The contract uses this data to calculate the health factor of the loan.
Execution Speed
Rapid response to price drops prevents the accumulation of bad debt within a system. Smart contract liquidation allows the protocol to sell assets at market rates the moment a violation occurs. This process is often incentivized by offering a discount to third parties who perform the liquidation.
These liquidators provide the necessary capital to close the underwater position. The entire transaction happens in a single block, ensuring that the system remains balanced. This speed protects the depositors who provide the liquidity for the loans.
It also reduces the chance of a cascading failure across the entire platform.
Slippage Cost
The difference between the expected price and the actual sale price can impact the recovery amount. Smart contract liquidation must account for the liquidity of the market to avoid causing further price declines. Large liquidations are often broken into smaller parts to minimize this impact.
