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WhatsABI

WhatsABI

Free

GitHub Open Source Projects

WhatsABI is a web app for guessing ABIs from an address via 4-byte JUMPI instructions.

Ethereum

About WhatsABI

WhatsABI reveals the ABI of a Solidity smart contract from its address, even when the contract isn’t registered.

Developers can query the contract’s events, interfaces, selectors, and database loaders directly, enabling thorough inspection and integration from a single address.

The tool supports Ethereum and compatible networks, including Arbitrum, Avalanche, and BNB Chain, empowering engineers to validate interactions and build applications without requiring a prepublished ABI.

This streamlines contract analysis and integration across multi-chain projects.