EthereumIntermediate
Calldata
The input data supplied to an Ethereum transaction or contract call.
PLAIN-ENGLISH DEFINITION
In more detail
Calldata tells a contract what you're asking it to do and with which arguments. A wallet may turn a long hexadecimal string into a readable function name and values using the contract's ABI. That decoding is helpful, but you still need the correct contract and interface to understand the request.
IN THE WILD
How you might use it
A swap request includes calldata describing the swap function, input amount and minimum amount you agree to receive.
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