order?
What do you mean "to sign"? You mean the approval? It is required for ERC20 tokens, approval is an interaction between you and the token's contract. This lets the token contract know that you are allowing the protocol to use your tokens for swapping.
Yes, for limit orders, you have to sign some kind of message. However, with regular orders on 1inch, you don't need to sign anything, it's the traditional way of approving (similar to Pancakeswap / Uniswap).
I think that would depend on the token you're approving—some will enable users to sign a message.
Thanks. What are the conditions when signing is required?
I think it only depends on a token, like USDC for example and your wallet as well. Approval is only once per token an per protocol.
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