Contract Decode — EVM Error & Calldata Decoder

Decode EVM contract function selectors, custom errors, calldata, and revert data.

Trigger

• Keywords: revert, selector, 4byte, calldata, decode, custom error, execution reverted, abi decode
• Message contains 0x + 8+ hex chars (selector or revert data)

When NOT to Use

• Standard Error(string) revert already handled by your codebase
• Non-EVM chain errors
• Only need error code definitions (not hex decoding)

Input Parsing

Extract from user input: