Approve and Swap/Deposit at the same time

Question

So one of the most annoying things for me is having to Approve before calling Swap or Deposit.

I would love there to be a proxy contract which just calls Approve and Swap/Deposit in the same function.

Are there any existing contracts that implement this already?

As said by other it is not possible with non-contract wallet. But it should be possible if the wallet is a contract. — Ismael, May 13 '21 at 04:05

score 1 · Answer 1 · answered May 08 '21 at 03:11

1

It cannot be done as far as I know.

approve() has to be called on the token contract from the address holding the tokens. Therefore, a contract could not call the approve function on behalf of your address.

answered May 08 '21 at 03:11

Undead8

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Is that true even with delegatecall? – doctopus May 08 '21 at 03:39
Yes see that other answer https://ethereum.stackexchange.com/a/59936/42354 – Undead8 May 08 '21 at 11:57

Approve and Swap/Deposit at the same time

1 Answers1