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Flash loans can be performed essentially by building a Solana transaction, where starting instruction is the
FlashLoanBeginand last instructions is the
FlashLoanEndfrom the mango V4 program. The intermediate instructions can call any solana program of choice.
FlashLoanBegintransfers tokens from the mango V4 vaults to the token accounts of choice, and
FlashLoanEndmoves the excess (in comparison with amount before the transaction) amount per token back to the vaults.
- Borrowing for a particular token can only be done once
- Cannot be called from cross-program invocation
- The only mango V4 instructions allowed are the
- The initial health of the involved mango account at the end of the transaction must either be above 0 or better than the initial health before the transaction