Guess ABI of any Ethereum contract, even if it is not verified on Etherscan. Works by analyzing the bytecode, extracting selectors from PUSH4/JUMPI instructions and comparing them to known ABI signatures.

Powered by @shazow/whatsabi and 4byte.directory

Getting Started

Copy .env.example to .env and add your Alchemy API key.

Then, run the development server:

npm run dev
# or
yarn dev

Open http://localhost:3000 with your browser to see the result.