Smart Contract Reader
Paste a contract address and ABI to get a generated UI for all read functions. See decoded return values instantly across multiple networks. Saves your contract library to localStorage.
Read any Ethereum smart contract's state without writing code. SolveBar's Smart Contract Reader generates a UI from your ABI — paste a contract address and ABI, and call any read function to see decoded return values instantly across Ethereum, Arbitrum, Base, Polygon, and BSC.
What are smart contract read functions?
Smart contracts have two types of functions: state-changing functions (write) that cost gas and require signing a transaction, and read-only functions (view/pure) that query the blockchain state for free. Read functions include things like totalSupply(), balanceOf(address), name(), symbol(), and owner().
How to find a contract ABI
For verified contracts on Etherscan: search the contract address, go to the Contract tab, and copy the ABI from the Contract ABI section. For well-known standards (ERC-20, ERC-721), the standard ABI defines the common functions.
Supported networks
The contract reader supports Ethereum Mainnet, Arbitrum One, Base, Polygon, and BNB Smart Chain. Select the correct network — incorrect network selection will result in contract not found errors.
Frequently Asked Questions
Can I use this to execute write functions?
No — write functions require signing a transaction with a wallet. This tool only supports view and pure (read-only) functions.
What if the contract is not verified on Etherscan?
You can still interact with it if you have the ABI. Check the project's GitHub repository or documentation for the ABI JSON.
Why am I getting an error when calling a function?
Common causes: wrong network selected, the function requires parameters you have not provided, or the contract address is incorrect for the selected network.