mvx_flash_loan_patterns

A flash loan requires an atomic lend-execute-verify pattern on MultiversX, enforcing reentrancy guards and same-shard validation to ensure operations complete entirely or roll back, verifying repayment by checking contract balances post-callback.

The atomic lend-execute-verify pattern executes lending, callback processing, and repayment as a single indivisible transaction, ensuring that all steps succeed or the entire operation rolls back entirely to maintain state consistency.

Reentrancy guards protect DeFi atomic operations by preventing recursive smart contract calls within the same transaction, blocking attempts to bypass repayment logic and ensuring the lend-execute-verify sequence completes safely.

Same-shard validation is required for flash loan callbacks on MultiversX because cross-shard execution breaks atomicity, preventing the smart contract from guaranteeing that lending and repayment occur successfully within a single transaction.

Endpoint validation prevents repayment bypass by verifying the callback endpoint is not a built-in function, ensuring custom logic executes so the contract can check post-callback balances and confirm sufficient repayment before completing the atomic operation.

Yes, atomic operations support temporary asset grants in DeFi by applying the lend-execute-verify pattern, ensuring that temporary asset grants are either repaid within the same transaction or rolled back entirely to prevent loss.