MetaMask Flask DEVELOPMENT BUILD

THIS IS THE CANARY DISTRIBUTION OF THE METAMASK EXTENSION, INTENDED FOR DEVELOPERS.

MetaMask Flask: Developer Extension for Web3

"MetaMask Flask DEVELOPMENT BUILD" is a specialized version of the MetaMask extension tailored for developers, offering access to additional unstable APIs. This distribution channel allows developers to experiment with features and understand their capabilities, shaping the future of MetaMask. It enables seamless access to Ethereum-based dapps, NFT interactions, and supports various token standards such as ERC20 and ERC721, enhancing the developer experience in building blockchain applications.
Install from Chrome Web Store

Extension stats

Manifest V3
Users: 6,000+
Rating: 4.00
(8)
Version: 12.13.0-flask.0 (Last updated: 2025-03-01)
Version code: 12.13.0.150
Creation date: 2021-12-20
Permissions:
  • activeTab
  • alarms
  • clipboardWrite
  • notifications
  • scripting
  • storage
  • unlimitedStorage
  • webRequest
  • offscreen
Host permissions:
  • http://localhost:8545/
  • file://*/*
  • http://*/*
  • https://*/*
  • ws://*/*
  • wss://*/*
Size: 20.66M
Full description: See detailed description

Other platforms

Not available on Android
Not available on Firefox
Not available on Edge

User reviews

SCAM. ESTAFA. No es oficial y te robarán tus fondos. Isn't official and your funds will be stolen.
by Alvar1to, 2023-04-17

love it
by Rahul Kumar, 2022-12-21

Love this tool use for father improving Metamask
View all user reviews

Extension safety

Risk impact

MetaMask Flask DEVELOPMENT BUILD requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
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  • Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
  • Low ******* ****** ** *** ********* ******** *********
Risk likelihood

We don't have sufficient data to confidently determine the risk likelihood of MetaMask Flask DEVELOPMENT BUILD. Use it at your own risk.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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Promo images

MetaMask Flask DEVELOPMENT BUILD small promo image
Small promo image

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