MetaMask Flask is the experimental proving ground for our most cutting-edge and innovative features. A canary distribution of production MetaMask, Flask is where you—our developers—and experimental features ignite to create the future of Web3.
When building an application that manages and transfers real value, secure UX and stable features are essential to safeguard the user’s assets. By rolling out experimental features in Flask, we can remove some of our usual guard rails, and rapidly iterate on them before deploying them to the broader public.
Naturally, Flask does not offer the same API or UX stability guarantees as the main MetaMask applications do, so beware that it is intended for developers only, and participation is at your own risk. This laboratory is unsupervised.
Snapping Into Innovation with MetaMask Snaps
Snaps is the first feature to be released through Flask.
Snaps allows developers to expand the functionality of MetaMask at runtime, without our involvement. Just build a snap, tell your users about it, and make MetaMask work the way you want it!
What you can build with Snaps is only limited by the Snaps API itself, which the MetaMask team will continue to iterate on to meet developer demands.
At a high level, MetaMask Snaps consists of two things:
APIs for websites and MetaMask to communicate with individual Snaps.
Communication occurs via JSON-RPC requests and responses. In this way, Snaps can expand MetaMask’s JSON-RPC API and change the behavior of the MetaMask application at runtime. Over time, MetaMask will use this to support different blockchains and other decentralized protocols, novel kinds of cryptography, novel kinds of crypto assets, UI customization, and a countless number of other features. To learn more about how to use Snaps, read our technical documentation here.
Flask is the environment where we work to ensure features and APIs are stable, maintainable, and safe for all users. Hence, the purple fox is only suitable for developers to participate in.
Snaps is a way to give you, the Web3 developer, the opportunity to do more with our products, and create completely new kinds of dapps. Any developer can create a Snap, and in the future, users will get to decide which Snaps they want to use and integrate into their wallet.
Help create the future of Web3 today by getting started with Snaps. If you’re interested in working directly on the most innovative wallet in the business, we’re hiring both for Snaps and many other roles. Happy BUIDLing!