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Metashieldextension

Metashieldextension (MetaShield) is a JavaScript browser extension for identifying phishing websites and reviewing Ethereum approve and send transactions. It explains the likely effect and destination address, then checks the domain against allowlists and blocklists to warn about or block suspected phishing activity.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Metashieldextension — OpenViST project profile in Security & Custody.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it while visiting crypto websites and before proceeding with approve or send transactions, especially when a site or destination is unfamiliar.

Who it is for

  • Ethereum users who review token approvals or transfers in a browser.
  • MetaMask users seeking domain and transaction warnings while visiting crypto sites.

Documented uses

  • Understand which address an approve or send transaction would affect.
  • Check whether a website is listed as an allowed or suspected phishing domain.
  • Review a warning about an unlisted domain and, when data is available, contract source status.
Before you choose

Requirements & limits

  • The project is a browser extension focused on Ethereum and MetaMask contexts.
  • Blacklisted domains trigger a blocking warning, while allowlisted domains are presented as official sites; unlisted domains receive a risk warning.
  • Contract source status is reported only when the relevant data is available.
  • The public repository identifies the code as JavaScript under the GPL-3.0 license.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Review a transaction warning with MetaShield

Use MetaShield’s documented approve and send transaction explanations and domain-list safety checks to assess a crypto action.

Before you start

  • MetaShield browser extension; the README does not specify installation steps.

Steps

  1. When an approve or send transaction is identified, review the explanation of what it does and the address receiving authorization or funds.

  2. Check the domain’s status: a blocklisted domain triggers a warning and blocking, while a allowlisted domain is identified as an official site.

  3. If the domain is not listed, treat the transaction as carrying some risk; use any available contract open-source status information as additional context.

Expected outcome

The user receives information about the transaction’s likely effect and destination, plus a domain-based warning or status indication.

Guide limitations

  • Unlisted domains are described as carrying some risk, not as definitively malicious.
  • Contract open-source status is shown only when data is available.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
15 October 2026
Original website title
BuidlerDAO/MetaShieldExtension · Official homepage title · retained in its source language
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