Revoke Approvals

When you use a dapp, you often grant it permission to move a token on your behalf — frequently an unlimited allowance. Those approvals don’t expire. Months later, a contract you forgot about can still move your funds if it’s ever compromised. Revoke Approvals finds them and lets you switch them off.

What it checks

• ERC-20 token allowances (including unlimited approvals).
• ERC-721 / ERC-1155 NFT operator approvals (setApprovalForAll).
• Permit2 allowances.

It scans across many EVM chains using public RPCs and a Multicall3 fast path, so a sweep takes seconds rather than minutes.

How to use it

1. Open the tool and enter (or connect) the address to inspect.
2. Pick the networks to scan.
3. Review the list of active approvals — each shows the token, the spender, and the allowance amount.
4. Select the ones to cancel and revoke them. With a smart-contract wallet you can batch multiple revokes into a single signature.

Scope of the scan

The scan is built around fast, public-RPC-friendly queries rather than a deep historical log crawl, which keeps it quick and avoids rate limits. It covers a curated set of well-known tokens and spenders plus any you add yourself; a banner in the tool always states exactly what the current scan covered.

Fees

Revoking is an on-chain transaction, so you pay network gas. The tool itself is free.