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THE LAB

Small live tools I built. Try them, then read the code.

Wallet & ENS lookup

Paste an Ethereum address or an ENS name. Reads the chain live from your browser.

What does a transaction cost right now? Live gas price, editable.

Transaction type

Gas price (gwei)ETH price (USD)

Typical gas amounts. Real cost varies with the contract.

Sign a message with your wallet. The page checks the signature on your device.

Nothing is sent to a server. Signing a message costs no gas and moves no funds.

The keyboard sound of this site, synthesized in the browser. No audio files.

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