Paste an Ethereum transaction hash. We decode what it does, flag risky permissions, and tell you what to do next — in plain English.
You’re granting a contract permission to spend your token balance. The approval is unlimited, meaning it can move tokens later without asking again.
If you didn’t intend this approval, revoke it in your wallet’s token approvals for the same network.
You see a contract address, a function name, and a number. The dApp says it’s safe. But one signature can grant permissions that are hard to understand — and easy to regret.
This tool exists so you don’t have to guess. You get clarity, a risk rating, and the next action — before you click “Confirm.”
Paste a hash. We decode. You decide — with confidence.
Copy a transaction hash from your wallet or explorer and paste it in.
We fetch verified contract details when available and parse the call data.
Get a clear rating and what to do next — including revoke guidance for approvals.
No jargon. No guesswork. Just the information you needed in the first place.
A human description of what the transaction does and why it matters.
Low / Medium / High with specific reasons (unlimited approval, operator control, upgrades, etc.).
The exact permissions being granted — and what a contract can do later.
If it’s an approval, you’ll get clear steps to remove permissions safely.
Built to earn trust from day one.
Try a few decodes at no cost. If you keep coming back, unlock unlimited checks and history.
The questions skeptical crypto users always ask.
No. This is read-only. We never request wallet permissions, signatures, private keys, or seed phrases.
We’ll still show the contract address, method selector, and a best-effort explanation with clear uncertainty. Unknown contracts are treated as higher risk.
Blockchains are irreversible. But for approvals and operator permissions, you can usually revoke access. We show you how.
Start with Ethereum for MVP. Add more chains once users ask for them (and you have volume).
Free to start • No sign-up • No wallet connection