Provides scaffolding for controllers as well a communication system for all controllers

Manages requests that require user approval

Maintains a periodically updated list of approved and unapproved website origins

The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags

Core classes and controller for creating parallax scrolling effects

Polling Controller is the base for controllers that polling by networkClientId

A modest JavaScript framework for the HTML you already have.

A controller for managing cryptocurrency on/off ramps functionality

Multichain network controller

Data and convenience functions shared by multiple packages

Periodically calculates gas fee estimates based on various gas limits as well as other data displayed on transaction confirm screens

A Stimulus controller to toggle a class on one or multiple items to show or hide them.

The profile sync helps developers synchronize data across multiple clients and devices in a privacy-preserving way. All data saved in the user storage database is encrypted client-side to preserve privacy. The user storage provides a modular design, givin

Provides an interface to the currently selected network via a MetaMask-compatible provider object

Manages configuration registry for MetaMask

Background job registry (ctx.jobs) for the DeepSeek Harness — shared ids, owner isolation, polling, cancellation, and completion listeners for long-running tool work

Tracks assets balances/prices and handles token detection across all digital assets

Manages a list of recipient addresses associated with nicknames

Manages user-configurable settings for MetaMask

Stores transactions alongside their periodically updated statuses and manages interactions such as approval and cancellation