Documentation
Learn how to use the Now I See Web3 tools to decode on-chain data, debug smart contract errors, and inspect Ethereum transactions. Select a guide below to get started.
Calldata Decoder Guide
Learn how Ethereum calldata encoding works and how to use the Calldata Decoder to convert raw hex strings into human-readable function calls.
Error Decoder Guide
Understand Solidity error types and learn how to decode revert data including Error(string), Panic(uint256), and custom contract errors.
Transaction Analyzer Guide
Discover how to search and inspect Ethereum transactions across multiple chains — view decoded calldata, event logs, and full transaction details.