GitHub Copilot skills, plugins, subagents, slash commands and mcp servers

phoenix-evals official [email protected] skill Build and run evaluators for AI and LLM applications with Phoenix. Use it to investigate failures, evaluate RAG systems, and check model output. 1,000installs phoenix-cli official arize-ai skill A GitHub Copilot skill that drives the Phoenix CLI to pull traces, spans and sessions, then turns what it finds into a failure taxonomy for your LLM app. 1,000installs onboard-context-matic official github skill Interactive tour of the context-matic MCP server. It detects project languages, catalogs supported APIs, and demonstrates live model and endpoint lookups. 1,000installs game-object-components phaserjs skill Reference guide for Phaser 4 game object components and mixins. Helps coding agents handle Transform, Depth, and WebGL effects accurately. Claude Code CX Codex Cursor 796installs autonomous-agents sickn33 skill A skill about building autonomous agents that stay reliable: ReAct and plan-execute loops, goal decomposition, reflection, and the math of compounding step failures. Claude Code CX Codex Cursor 1,200installs code-refactoring-refactor-clean sickn33 skill Analyzes code smells and plans stepwise refactoring based on SOLID and clean code principles. Helps clean tangled modules before introducing new features. Claude Code CX Codex Cursor 1,200installs blockchain-developer sickn33 skill This skill guides smart contract, Web3 application, and decentralized-system work. Use it for design, reviews, and transaction checks before any on-chain action. Claude Code CX Codex Cursor 1,200installs production-code-audit sickn33 skill Skill for systematic code review covering security flaws, logic errors and performance issues before deployment. Identifies specific problems, proposes fixes and validates them. Claude Code CX Codex Cursor 1,200installs ai-prompt-research every-app skill This skill discovers questions people ask ChatGPT about your niche, shows how the model answers them, and reveals which sites it cites. Learn where your brand appears in AI responses and where competitors show up instead. Claude Code CX Codex Cursor 837installs groups-and-containers phaserjs skill A Phaser 4 skill covering Group, Container and Layer, object pooling and nested transforms, so you stop guessing how to organise sprites. Claude Code CX Codex Cursor 790installs huggingface-papers huggingface skill Pulls the paper ID out of a Hugging Face or arXiv link, reads the page as markdown, and fetches authors, models and datasets from the papers API. Claude Code CX Codex Cursor 2,200installs huggingface-llm-trainer huggingface skill Runs language and vision model fine-tuning on Hugging Face Jobs with TRL or Unsloth and converts checkpoints to GGUF without local GPUs. Claude Code CX Codex Cursor 2,200installs dart-generate-test-mocks dart-lang skill A Dart testing skill: the agent injects external services through constructors, generates mock classes with mockito and build_runner, then writes the unit test. Claude Code CX Codex Cursor 18,200installs weekly-review cursor skill This skill pulls your commits from the past 7–10 days, groups them by work type, and produces a brief report for status updates and retrospectives. Requires a configured git with email set. Claude Code CX Codex Cursor 2,400installs control-ui cursor skill Inspects and tests local web, IDE, or Electron interfaces via browser automation and CDP. Captures screenshots, traces, and verifies UI changes without extra dependencies. Claude Code CX Codex Cursor 2,400installs fix-ci cursor skill This skill finds failed PR checks, examines logs, and guides small fixes. Use it when branch or pull request CI is failing. Claude Code CX Codex Cursor 2,400installs control-cli cursor skill Builds a local harness to drive, test, and profile interactive CLI or TUI tools. Catches UI regressions, memory leaks, and hangs without third-party services. Claude Code CX Codex Cursor 2,400installs cron-schedule ruvnet skill Schedules background worker runs via CronCreate during an active session. Useful for recurring security audits, test gap reviews, and codebase mapping. Claude Code CX Codex Cursor 902installs time-and-timers phaserjs skill Guides AI agents on configuring Clock, TimerEvent delays, loops, and Timelines in Phaser 4. Useful when scripting game loops. Claude Code CX Codex Cursor 786installs react-email vercel-labs skill Turns JSON email specs into HTML or plain-text output with React Email. Use it for email catalogs, generated specs, and transactional message templates. Claude Code CX Codex Cursor 1,400installs vue vercel-labs skill A skill to convert JSON specifications into Vue 3 components with data binding, visibility conditions, and action handling. Use it if you generate interfaces via AI or build UIs from JSON. Claude Code CX Codex Cursor 1,400installs iot-firmware ruvnet skill Orchestrates firmware rollouts across fleets using canary deployments and anomaly gates. Helpful when shipping updates to connected hardware without risking outages. Claude Code CX Codex Cursor 900installs nitro Anthony Fu skill A skill with Nitro v3 references: file-based routing, route rules, caching, storage and deployment presets. Use it when the agent edits nitro.config or writes H3 handlers. Claude Code CX Codex Cursor 2,600installs write-pr tldraw skill Sets PR title and description standards: semantic types, structured templates, and reviewer-focused writing rules. Claude Code CX Codex Cursor 419installs dart-build-cli-app dart-lang skill Skill for building command-line applications in Dart. Provides architectural patterns, entrypoint structure, exit codes, stream routing, and subprocess spawning. Claude Code CX Codex Cursor 18,000installs dart-migrate-to-checks-package dart-lang skill Migrates Dart test suites from legacy package:matcher to package:checks. Useful when modernizing test assertions for static type safety and detailed diagnostics. Claude Code CX Codex Cursor 18,000installs validate-skills Callstack skill Checks skills in skills/ against the agentskills.io specification and Claude Code practices. Use it when authoring or reviewing a skill collection. Claude Code CX Codex Cursor 7,200installs image-to-ui UIZZE skill Turn a screenshot, mockup, or sketch into working interface code. The skill views the image, reproduces it exactly in code, then renders and compares to fix any mismatches. Claude Code CX Codex Cursor 63,500installs mmx-cli MiniMax-AI skill Teaches your agent to use the MiniMax CLI directly from the terminal. Helps generate text, images, video, speech, and music inside coding workflows. Claude Code CX Codex Cursor 1,600installs minimax-music-gen MiniMax-AI skill A Claude Code skill that turns a description into an MP3 — vocals, instrumental or a cover — through the MiniMax Music API and the mmx tool. Claude Code CX Codex Cursor 1,600installs external-context Yeachan-Heo skill This skill breaks down your query into multiple search facets and spawns parallel document-specialist agents to search documentation and web simultaneously. Useful for gathering context on a topic or comparing approaches. Claude Code CX Codex Cursor 784installs deep-research ruvnet skill Orchestrates multi-phase research using web search, codebase analysis, and memory storage. It generates structured findings with evidence ratings for complex topics. Claude Code CX Codex Cursor 893installs events-system phaserjs skill Guides Phaser 4 event work, from listeners and custom signals to communication between scenes. Use it when editing code with on, emit, or EventEmitter. Claude Code CX Codex Cursor 778installs api-docs ruvnet skill Skill that turns TypeScript and JavaScript source into documentation: it finds public exports, reads existing JSDoc, writes the missing comments and emits OpenAPI 3.0 for HTTP endpoints. Claude Code CX Codex Cursor 891installs userinterface-wiki raphael-salaja skill Handbook of 152 UI/UX rules for web interfaces. Skill checks animations, typography, audio feedback and UX patterns, reports errors with file:line precision. Claude Code CX Codex Cursor 4,500installs adaptive Google LLC skill Guides the agent in adapting Android Compose UI for foldables, tablets, desktop, and phones. Helpful when supporting multiple screen sizes and input devices. Claude Code CX Codex Cursor 2,400installs filters-and-postfx phaserjs skill Applies visual filters and post-processing in Phaser 4. Helps configure blur, glow effects, and shader masks. Claude Code CX Codex Cursor 772installs react19-source-patterns official github skill A reference for moving React source files to React 19, covering API changes, refs, context, and props. Useful during an existing project upgrade. 967installs anti-ui-slop official UIZZE skill This skill guides agents toward product-specific interfaces instead of generic UI. Use it for web or iOS design, implementation, redesign, and pre-ship review. 967installs configure-notifications Yeachan-Heo skill Configures Telegram, Discord, or Slack alerts through an interactive agent dialog. It alerts you when background runs complete or Claude awaits your input. Claude Code CX Codex Cursor 775installs