vscode-extension-expert

This skill provides expert-level guidance for VS Code extension development. Use when implementing new extension features, debugging extension code, designing WebView UIs, implementing Language Server Protocol features, or optimizing extension performance. Covers activation events, contribution points, VS Code API patterns, security best practices, testing strategies, state persistence, file watchers, singleton webview pattern, and publishing workflows.

e2e-playwright-extension

Adds or updates extension E2E tests using the project Playwright setup and fixture (load unpacked extension, popup/background). Use when adding e2e for a feature, fixing failing e2e, or when changing popup/options/background flows.

excalidraw-diagrams

Creates Excalidraw diagrams programmatically. Use when the user wants flowcharts, architecture diagrams, system designs, or any visual diagram instead of ASCII art. Outputs .excalidraw files that can be opened directly in Excalidraw or VS Code with the Excalidraw extension.

Agents vs Commands vs Skills — When to Use What

A comparison of the three extension mechanisms in Claude Code: subagents, commands, and skills.

typed-ffmpeg-usage

Guide for using typed-ffmpeg, a modern Python FFmpeg wrapper with extensive typing support and comprehensive filter support. Use this when working with FFmpeg operations, video/audio processing, or filter graphs in Python.

walnut-api

Walnut Admin Client API layer development patterns. Use when creating or modifying API modules in the walnut-admin-client project. Provides patterns for BaseAPI extension, axios adapters, interceptors, and request/response types.

Documentation Manager

Use when writing or reviewing pynchy documentation, deciding where to document things, updating the docs, checking doc consistency, or fixing broken links. Covers information architecture, writing philosophy, tree-shaped navigation, doc-code coupling, no hard-coded usernames, extensibility framing for pluggable subsystems, and when to add code comments.

MCP OpenClaw Extensions

138-tool MCP server for AI agent firms: security, A2A, Hebbian memory, fleet mgmt

bedframe

Work in a Bedframe browser extension project. Use when the repository contains AGENTS.md, src/_config/bedframe.config.ts, src/manifests/*, or the task involves the Bedframe CLI, @bedframe/core, browser manifests, extension pages, Vite config, or release flow.

dotnet-inspect

Query .NET APIs across NuGet packages, platform libraries, and local files. Search for types, list API surfaces, compare versions, find extension methods and implementors. Use whenever you need to answer questions about .NET library contents.

cross-platform-paths

Critical patterns for cross-platform path handling in this VS Code extension. Windows vs POSIX path bugs are the #1 source of issues. Use this skill when reviewing or writing path-related code.

Ui Annotator Mcp

Annotates any web page with hover labels for AI assistants — zero extensions, any browser

Cws

MCP server for Chrome Web Store — extension upload, publish, status, and rollout

mcp-apps

Build MCP Apps - interactive HTML UIs rendered in chat via the MCP Apps Extension (SEP-1865). Use when creating MCP tools that need rich UI beyond text, adding interactive forms/visualizations to MCP servers, configuring structuredContent for UI data passing, or debugging MCP UI rendering issues. Keywords: MCP Apps, SEP-1865, ui://, text/html;profile=mcp-app, structuredContent, postMessage, registerTool _meta.

large-skill

Large skill with extensive content and supplementary files

extensions

Run ApiChief against libraries matching a pattern to emit baselines, summaries, deltas, reviews, or check for breaking changes

pi-coding-agent-config

Reference for customizing and configuring pi-coding-agent (pi). Covers settings files (settings.json), extensions, skills, prompt templates, package management, and programmatic usage via the SDK. Use when asked about pi configuration or customization.

hve-core-installer

Decision-driven installer for HVE-Core with 6 clone-based installation methods, extension quick-install, environment detection, and agent customization workflows - Brought to you by microsoft/hve-core

adev-writing-guide

Comprehensive writing guide for Angular documentation (adev). Covers Google Technical Writing standards, Angular-specific markdown extensions, code blocks, and components. Use when authoring or reviewing content in adev/src/content.

Real Browser

MCP server + Chrome extension for AI browser control with real sessions.

playwright-best-practices

Use when writing Playwright tests, fixing flaky tests, debugging failures, implementing Page Object Model, configuring CI/CD, optimizing performance, mocking APIs, handling authentication or OAuth, testing accessibility (axe-core), file uploads/downloads, date/time mocking, WebSockets, geolocation, permissions, multi-tab/popup flows, mobile/responsive layouts, touch gestures, GraphQL, error handling, offline mode, multi-user collaboration, third-party services (payments, email verification), console error monitoring, global setup/teardown, test annotations (skip, fixme, slow), test tags (@smoke, @fast, @critical, filtering with --grep), project dependencies, security testing (XSS, CSRF, auth), performance budgets (Web Vitals, Lighthouse), iframes, component testing, canvas/WebGL, service workers/PWA, test coverage, i18n/localization, Electron apps, or browser extension testing. Covers E2E, component, API, visual, accessibility, security, Electron, and extension testing.

browser-extension

Master specialized skill for building 2025/2026-grade browser extensions. Deep expertise in Manifest v3, Service Worker persistence (Alarms, Offscreen API), Side Panel API, and Cross-Browser compatibility.

mini-wiki

Automatically generate **professional-grade** structured project Wiki from documentation, code, design files, and images. Use when: - User requests "generate wiki", "create docs", "create documentation" - User requests "update wiki", "rebuild wiki" - User requests "list plugins", "install plugin", "manage plugins" - Project needs automated documentation generation Features: - Smart project structure and tech stack analysis - **Deep code analysis** with semantic understanding - **Mermaid diagrams** for architecture, data flow, dependencies - **Cross-linked documentation** network - Incremental updates (only changed files) - Code blocks link to source files - Multi-language support (zh/en) - **Plugin system for extensions** For Chinese instructions, see references/SKILL.zh.md

OpenTelemetry Instrumentation Extension

Extend OpenTelemetry instrumentation when new functionality is added to the MCP Gateway. Use when (1) new operations/functions are added, (2) reviewing code for missing instrumentation, (3) user requests otel/telemetry additions, or (4) working with state-changing operations. Analyzes git diff, suggests instrumentation points following project standards in docs/telemetry/README.md, implements with approval, writes tests, updates documentation, and verifies with debug logging and docker logs.

Hebcal

Model Context Protocol extension for Hebrew calendar

seedance-prompt-en

Write effective prompts for Jimeng Seedance 2.0 multimodal AI video generation. Use when users want to create video prompts using text, images, videos, and audio inputs with the @ reference system. Covers camera movements, effects replication, video extension, editing, music beat-matching, e-commerce ads, short dramas, and educational content.

compiler_plugin_dev

Designs, models, and implements Kotlin compiler extensions using K2/FIR and IR. Guides modifications to SpektGenerator (IR), ProxyGenerator (IR), and InspektChecker (FIR). Handles synthetic declaration generation, FIR status/supertype transformations, and IR backend lowerings. Use when implementing reflection features, fixing plugin bugs, or engineering compiler diagnostics.

redis-js

Work with the Upstash Redis JavaScript/TypeScript SDK for serverless Redis operations. Use for caching, session storage, rate limiting, leaderboards, full-text search (querying, filtering, aggregating with @upstash/redis search extension), and all Redis data structures. Supports automatic serialization/deserialization of JavaScript types. Search also available via @upstash/search-redis and @upstash/search-ioredis adapters for TCP clients.

Chrome Extension Development (Manifest V3)

This skill covers everything needed to build, debug, and publish Chrome extensions with MV3. It is organized as a routing document: read this file first to understand the architecture and decision points, then load the relevant reference file for implementation details.

azure-typespec-author

Author or modify Azure TypeSpec API specifications in the azure-rest-api-specs repository. USE FOR: Any task that creates, modifies, or troubleshoots .tsp files or TypeSpec API specifications — including but not limited to API versioning, ARM or data-plane resource definitions (tracked, proxy, extension, child resources), resource operations (CRUD, PATCH, custom actions, async/LRO), models, enums, unions, properties, decorators, constraints, and swagger-to-TypeSpec conversion. DO NOT USE FOR: SDK generation from TypeSpec, releasing SDK packages, single MCP tool calls that do not require multi-step workflows. TOOLS/COMMANDS: azsdk_typespec_generate_authoring_plan, azsdk_run_typespec_validation

get-extension-version

Extracts the version from gemini-extension.json and makes it available during the session.

parchi-relay

Use Parchi Relay to control a real browser via the Parchi extension agent (WebSocket) or directly via JSON-RPC from a CLI/tooling workflow.

w3wallets

Interact with browser wallets (MetaMask, Polkadot.js) in Playwright e2e tests. Use when the user needs to set up wallet extensions, create wallet fixtures, approve/deny transactions, manage wallet caching, or any Web3 wallet interaction in tests.

vscode-visual-regression

Write Storybook stories and visual regression tests for the Kilo VS Code extension webview UI

send-to-openclaw

Send web page content from Chrome to Clawdbot with one click. Chrome extension + local webhook server. Extracts clean text from any page, Google Docs (via export API, no auth needed), and X/Twitter threads (stripped of UI chrome). Use when setting up the Send to OpenClaw browser extension, troubleshooting the webhook server, or helping users send page content to their Clawdbot instance.

tiptap

Helps coding agents integrate and work with the Tiptap rich text editor. Use when building or modifying a rich text editor with Tiptap, installing Tiptap extensions, or implementing features like collaboration, comments, AI, or document conversion.

Browser Automation with dev-browser

dev-browser is a CLI that controls browsers using sandboxed JavaScript scripts. Scripts run in a QuickJS WASM sandbox (not Node.js) with Playwright Page API access plus dev-browser extensions (notably `snapshotForAI()`). Pages persist between script runs via named handles, enabling incremental multi

Brainstorming Extension - Mandatory Review Gate Bridge

update-razor-version

Guide for updating the Razor extension version in the vscode-csharp repository. Use this when asked to update Razor, bump the Razor version, or upgrade the Razor language server version.

alive:build-extensions

Create new skills, rules, and hooks for your world. Checks plugin compatibility, writes to the human's space (not plugin cache), validates against the system, and suggests when repeated work should become a skill. For marketplace-ready plugins, hands off to the contributor plugin.