Dapp StoreEthereumWeb3 Developer ToolsABI Tools
ABI Tools


A web app for guessing ABIs from an address via 4-byte JUMPI instructions.

Ethereum Logo

What is WhatsABI?

Created by Google and Infura alumni Andrey Petrov, WhatsABI figures out the ABI of a Solidity smart contract, regardless of it being unregistered. Developers can query events, interfaces, selectors, and database loaders from just the Ethereum smart contract address.

Stream any onchain event for WhatsABI with Custom Webhooks
Get your API key
Is this your project?
Request edits

Best ABI Tools

Discover more web3 applications and developer tools.

See all dapps
Section background image

Build blockchain magic

Alchemy combines the most powerful web3 developer products and tools with resources, community and legendary support.

Get your API key