Web3 Decoder Burp Suite Extension

Web3 Decoder is a Burp Suite extension and supporting Python library that decodes web3 JSON-RPC calls (eth_call, eth_sendRawTransaction, and responses) by retrieving smart contract ABIs from block explorer APIs. The document describes installation steps, supported EVM chains, features (including proxy/multicall handling and manual ABI addition), implementation details, and planned enhancements such as signature-db based decoding; it is a tooling/product write-up rather than a security incident report.