Skill Claude Code
A planning and decision-making skill that evaluates whether an action is justified, why it should be taken, and whether the available conditions are sufficient. It observes and recommends but does not perform operations or verify facts.
Skill Claude Code
A routing guide for browser and web-development topics, including rendering, the DOM, event loops, web storage, content security, performance, and progressive web apps. It directs a task to a more specific unit when needed.
Skill Claude Code
A narrowly targeted browser skill for event bubbling, where a browser event travels from the element that received it up through its parent elements. It is intended only when the task explicitly concerns this event path.
Skill Claude Code
A guide to checking browser form fields before submission, including required fields, email addresses, and numbers.
Skill Claude Code
A guide to the browser Fetch API, which sends network requests with a method, URL, headers, and optional body.
Skill Claude Code
A guide to preloading, which asks the browser to fetch important resources before the page needs them.
Skill Claude Code
A guide to Picture-in-Picture, which displays supported video in a small window that can stay above other windows.
Skill Claude Code
A tool for recording, filtering, and summarising browser network requests. Network requests are messages a webpage sends to fetch data or files.
Skill Claude Code
A guide to the CSS box model, which describes how an element's content, padding, border, and margin affect its size and spacing.
Skill Claude Code
A guide to the browser page-visibility state, which says whether a page is visible or hidden, such as when its tab is in the background.
Skill Claude Code
A guide to Service Workers, background browser scripts that can handle installation, activation, and network requests.
Skill Claude Code
A guide to CSS selectors, the patterns used to match HTML elements such as tags, classes, or tag-and-class combinations.
Skill Claude Code
A guide to responsive breakpoints, which are width ranges where a webpage changes its layout for different screen sizes.
Skill Claude Code
A browser interaction helper for checking vibration status and starting or stopping device vibration. It corresponds to the browser's navigator.vibrate API.
Skill Claude Code
A geometry helper for deciding whether a point lies inside a rectangle with rounded corners. Rounded corners are the curved edges created by CSS border-radius.
Skill Claude Code
A browser communication helper for sending, receiving, and listing listeners across browser tabs. It corresponds to BroadcastChannel and postMessage, which let separate pages exchange messages.
Skill Claude Code
A text layout helper that breaks text into lines using a chosen width. It uses greedy wrapping, which fills each line as much as possible before moving to the next.
Skill Claude Code
A touch-input helper for recognising taps, pans, and two-finger pinches. These are touch gestures used to activate, move, or zoom interface elements.
Skill Claude Code
An HTML parser that turns nested tags into a tree of parent and direct-child relationships. The DOM, or Document Object Model, is the tree browsers use to represent an HTML page.
Skill Claude Code
An HTTP request builder for assembling a GET request with a host and headers. HTTP is the standard format browsers and servers use to exchange web requests and responses.
Skill Claude Code
A browser security helper for checking, granting, and revoking permissions in an isolated frame. An iframe is a web page embedded inside another page; sandboxing limits what it can do.
Skill Claude Code
A push-notification helper for subscribing to and sending messages through the Push API. Push notifications are messages delivered by a server to a user's device, even when the page is not open.
Skill Claude Code
A browser file-access helper for opening, reading, and writing local files. The File System Access API is the browser feature that asks a user for permission to work with local files.
Skill Claude Code
A browser extension manager for installing extensions, turning them on, and checking their permissions. Extensions are small browser programs that add or change browser features.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: