Is MetaMask Legacy Web3 safe?

Clean risk

Provides the legacy window.web3 API so older websites can work with MetaMask.

This extension works alongside the MetaMask wallet to support older or unmaintained websites that still expect the legacy window.web3 API. It has permission to run on file, HTTP, and HTTPS pages so it can make that API available on visited sites.

0Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Updated 15 October 2026amo-2676824