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.

craft-cloud

Craft Cloud — Pixel & Tonic's serverless hosting platform for Craft CMS. Covers craft-cloud.yaml configuration, the Build → Migrate → Release deploy pipeline, the craftcms/cloud extension package, edge image transforms via Cloudflare, edge static caching with cache.rules + ESI, Cloud-managed S3 filesystem, MySQL 8 / Postgres 15 databases (no MariaDB, no tablePrefix), Console-based command runner and scheduled cron (once-per-hour minimum), auto-handled queue jobs, custom domains and SSL, preview environments per branch, Cloud limitations (ephemeral filesystem, no SSH, no .htaccess, no built-in mail), plugin development requirements for Cloud compatibility, and self-hosted → Cloud migration. Triggers on: craft-cloud.yaml, craftcms/cloud package, cloud.esi(), php craft cloud/up, php craft cloud/setup, App::isEphemeral(), CRAFT_EPHEMERAL, edge.craft.cloud, preview.craft.cloud, CRAFT_CLOUD_PROJECT_ID, CRAFT_CLOUD_ENVIRONMENT_ID, CRAFT_CLOUD_CDN_BASE_URL, Build → Migrate → Release, Cloud filesystem, Cloud-compatible plugin, Cloudflare Images at edge, AssetsFs, static-caching rules, ESI islands, deploy to Craft Cloud, migrate to Craft Cloud, self-hosted to Cloud, Craft Cloud quotas, Craft Cloud regions. Do NOT trigger for generic Craft deployment (Forge, Servd, bare metal) — that lives in craftcms/deployment.md. Do NOT trigger for general DDEV local dev unrelated to Cloud parity.

exasol

Top-level router for Exasol work. Use for any Exasol database, exapump, SQL, BucketFS, extension, integration, UDF, Script Language Container, or Exasol Personal setup task, then route to the narrowest specialized Exasol skill.

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.

external-browser-driver

Control a user-paired external browser through a Chrome extension, explicit typed targets, and semantic operations.

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.

0029 · New skill `docker-architect` for docker-compose/Dockerfile extension after bootstrap

- **Date:** 2026-09-10 - **Scenario:** Criar skill responsável por dockerização/containerização. Docker e docker-compose básicos nascem no `project-bootstrap`; extensões (serviço de DB, config de Testcontainers) acontecem depois, disparadas por skills do `/new-feature` quando necessário. -

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

Eval: speckit-extension

The regression net for the `speckit-extension` (the spec-kit-side half of SpecKit Companion). It verifies the assumptions behind each feature against a **real spec the user created**, combining a deterministic file checker with a conversational cross-check of what the user actually did this session.

extensions

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

au-review

Reviews AudioUnit v2/v3 plugin implementations for spec compliance, thread safety, and correctness. Use when the user asks to review an AudioUnit plugin, check an AUv3 app extension, audit property or parameter handling, or asks "is my AUComponent thread-safe?" or "why does my AU crash in Logic?". Trigger on phrases like "review my AudioUnit", "check my AUv3", "is my render block safe?", or when you see AURenderCallback, internalRenderBlock, kAudioUnitProperty_*, or AUAudioUnit in the code.

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.

devhost-test

Runs the extension in a real, disposable VS Code (Extension Development Host) with fake data and drives its Webview over the Chrome DevTools Protocol. Use after a sidebar or Webview change, when a check needs real theme injection, host-side state writes or settings round-trips that the synthetic preview (npm run test:ui) cannot give, or to screenshot the sidebar in real themes. Never for real accounts.

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.

Vaaya — your agent's gateway to the outside world

Vaaya is your extension to the world: it lets you do what you can't do on your own by connecting you to any external service and running multi-step workflows on your behalf.

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.

Forge of Thought is an AI cognitive extension: a workshop where your idea is forged into a decision you can stand behind. You and the AI elicit the idea together until it is whole, reviewers that never saw the conversation attack it, and who decided what and why is recorded. Runs in Claude Code.

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.

modlens

Plug-in vision for text-only models. Hard rule: when a file path or URL with an image extension (.png, .jpg, .jpeg, .webp, .gif, .heic, .heif) appears anywhere in the conversation (typed by the user, injected as a `[Image: source: <path>]` line, or inside a tag) and you cannot see that image's content, run this skill on it before any other approach: no self-built OCR, no PIL, no tesseract. Also triggers on pasted-image placeholders such as `[Image #1]` and `[Unsupported Image]`. If you can actually see the image, do not use this skill. When unsure, run `modlens guard` before the first read of a session: a deny verdict means the active model has native vision and must read the image itself. Runs the modlens CLI to convert the image into structured JSON evidence: every word transcribed, layout regions, semantics, visual clues. Also use when the user asks how to install, configure, or switch modlens providers (Gemini API key, OpenAI-compatible endpoints, Claude API or Claude Code CLI).

extension-development

Build, install, and hot-reload Nimbalyst extensions using MCP tools. Use when developing, testing, or iterating on Nimbalyst extensions.

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.