Codex skills, plugins, subagents, slash commands and mcp servers

openspec-explore openspec skill openspec-explore gives an agent a discussion-first mode for exploring ideas, investigating problems, and clarifying OpenSpec requirements before implementation. Claude Code Cursor GitHub Copilot 4,000installs openspec-propose openspec skill Generates a complete OpenSpec proposal with design, spec deltas, and implementation tasks in one run. Ideal for scoping changes before editing codebase files. Claude Code Cursor GitHub Copilot 4,000installs google-cloud-waf-operational-excellence official google skill Provides Google Cloud operations guidance for CI/CD, monitoring, logging, and incidents. Use it when reviewing CloudOps practices for a workload. Claude Code Gemini CLI 9,636installs urdf earthtojake skill This skill helps create, validate, and debug URDF robot descriptions. Use it when working with links, joints, geometry, meshes, or inertial data. Claude Code Cursor GitHub Copilot 10,400installs api-design-principles Seth Hobson skill Use this skill to plan or review REST and GraphQL APIs. It helps when writing a specification or setting API conventions for a team. Claude Code Cursor 30,348installs fixing-metadata ibelick skill Audits page metadata and fixes what's broken: titles, descriptions, canonical URLs, Open Graph, Twitter cards, icons and JSON-LD. Claude Code Cursor GitHub Copilot 18,200installs core-web-vitals web-quality-skills skill A skill that measures first, then fixes LCP, INP and CLS. Handy when a page loads slowly or the layout jumps around. Claude Code Cursor GitHub Copilot 31,900installs sandbox-migrate-to-next cloudflare skill Skill guides migration of Cloudflare Sandbox applications from the stable @cloudflare/sandbox package to the prerelease @cloudflare/sandbox@next (SDK 1.0). Use it when preparing code for the future stable release. Claude Code Cursor GitHub Copilot 66,900installs speech official openai skill Generates voiceovers, narration, and IVR audio clips via OpenAI Audio API. Useful when your project needs spoken audio files from plain text. Claude Code Cursor GitHub Copilot 3,500installs code-review-excellence Seth Hobson skill This skill guides pull request reviews, catches logic and security issues, and helps teams give specific feedback. Use it for review standards or developer mentoring. Claude Code Cursor 30,193installs react vercel-labs skill This skill turns json-render JSON specs into React component trees. Use it when building JSON-driven UIs or defining a component catalog for generated specs. Claude Code Cursor GitHub Copilot 16,300installs srdf earthtojake skill This skill creates and validates MoveIt2 SRDF files paired with a URDF. Use it for planning groups, robot semantics, and review-ready handoff. Claude Code Cursor GitHub Copilot 10,300installs google-cloud-waf-performance-optimization official google skill Assesses Google Cloud workload performance and suggests changes to resource allocation, modular architecture, elasticity, and monitoring. Claude Code Gemini CLI 9,484installs gemini-agents-api official google skill Manages Agent resources in Gemini Enterprise Agent Platform through its API. Use it when you need to configure an agent before starting conversations. Claude Code Gemini CLI 9,466installs unslop cursor skill This skill removes common AI writing patterns, filler, and vague phrasing while keeping the meaning and intended tone. Use it when polishing text. Claude Code Cursor GitHub Copilot 27,700installs agent-eval colbymchenry skill Compares agent behavior with and without CodeGraph on a real repository. Use it to audit retrieval quality and test a local or published CodeGraph version. Claude Code Cursor GitHub Copilot 1,800installs knowledge-synthesis official anthropics skill Merges search results across chats, emails, and documents into deduplicated answers with source attribution. Flags conflicting facts and scores source reliability. Claude Code Cursor GitHub Copilot 6,400installs testing-strategy official anthropics skill This skill designs testing strategies and test plans for a project. Use it when you need test types, coverage goals, or gaps in existing checks. Claude Code Cursor GitHub Copilot 6,400installs vue-best-practices github.com/vuejs-ai skill Enforces Vue 3 guidelines using Composition API and TypeScript. Helpful for structuring SFCs, managing reactivity, and writing composables. Claude Code Cursor GitHub Copilot 42,700installs google-cloud-waf-sustainability official google skill Assesses Google Cloud workloads for sustainability, carbon emissions, and energy use. Use it when designing or tuning cloud architecture with environmental limits in mind. Claude Code Gemini CLI 9,346installs yeet official openai skill Walks a change from git add to a draft pull request using gh. Runs only when you ask for it explicitly. Claude Code Cursor GitHub Copilot 3,400installs chakra-ui-builder chakra-ui skill Build responsive, accessible interfaces with Chakra UI v3, add the library to a project, and shape its theme. Useful for components, pages, and layouts. Claude Code Cursor GitHub Copilot 3,500installs view-pdf official anthropics skill Opens PDFs in an interactive viewer for shared markup, form filling, highlights, stamps, and visual signatures. Use it when text reading alone is not enough. Claude Code Cursor GitHub Copilot 6,300installs modern-web-guidance GoogleChrome skill A skill that searches a catalog of modern web guides and feeds the matching one to your agent. Useful when the model's training data has stale HTML, CSS or client-side JS patterns. Claude Code Cursor GitHub Copilot 34,900installs openspec-sync-specs openspec skill Syncs delta specs from an active OpenSpec change directly into main project specs without triggering change archiving. Claude Code Cursor GitHub Copilot 3,800installs github-triage code-yeongyu skill Reads every open issue and PR in a repo and writes evidence-backed reports. It never comments, merges or closes anything. Claude Code Cursor GitHub Copilot 2,700installs code-simplifier rtk-ai skill Reviews Rust code in RTK to remove over-engineering and needless allocations. It applies idiomatic simplifications without altering runtime behavior. Claude Code Cursor GitHub Copilot 2,100installs rtk-tdd rtk-ai skill This skill enforces a Red-Green-Refactor workflow for Rust and activates on implementation, testing, refactoring, and bug-fixing tasks. Claude Code Cursor GitHub Copilot 2,100installs learn rohitg00 skill Walks you through the AI Engineering from Scratch curriculum: pulls the next lesson, teaches it section by section in the terminal, quizzes you, and logs progress. Claude Code Cursor GitHub Copilot 4,200installs cookbook-audit official anthropics skill A skill that audits Anthropic Cookbook notebooks against the style guide: checks structure, code quality, security, and learning objectives. Use it when writing or reviewing notebooks with examples. Claude Code Cursor GitHub Copilot 776installs expo-dev-client expo skill Skill for building and distributing custom Expo development clients to physical devices via local builds or TestFlight. Use it when your app includes native code, Apple widgets, or third-party native modules not in Expo Go. Claude Code Cursor GitHub Copilot 70,000installs hatch-pet official openai skill Creates and packages animated pets and spritesheets for Codex. Use it to turn a character concept, reference image, or brand cues into a pet. Claude Code Cursor GitHub Copilot 3,300installs upgrade-stripe stripe skill Guides an agent through Stripe API, webhook, and SDK version upgrades. Use it when moving an integration to a target API version. Claude Code Cursor GitHub Copilot 72,800installs playwright-best-practices currents.dev skill A reference skill for Playwright test architecture, locator design, and Page Object Model. Helps debug flaky runs, mock network requests, and audit accessibility. Claude Code Cursor GitHub Copilot 98,200installs agent-platform-deploy official google skill Deploys Model Garden models to Agent Platform endpoints, checks operation status, and cleans up resources. Use it when a deployment, undeployment, or quota error needs action. Claude Code Gemini CLI 8,860installs course-guide rohitg00 skill Finds AI Engineering from Scratch lessons for a topic, question, or bug and suggests a next action. Use it when you need a course route for what you are learning. Claude Code Cursor GitHub Copilot 4,100installs postgresql-table-design Seth Hobson skill Helps design and review PostgreSQL schemas with guidance on data types, keys, constraints, indexes, and table partitioning. Claude Code Cursor 27,780installs gcode earthtojake skill Slices STL, 3MF, and OBJ models into printer-ready G-code through OrcaSlicer. Use it when you need a print file without connecting to the printer. Claude Code Cursor GitHub Copilot 9,500installs core vercel-labs skill Defines the schema and component catalog for json-render and builds the system prompt that makes an AI emit JSON UI specs. Claude Code Cursor GitHub Copilot 15,000installs cli-creator official openai skill Builds durable command-line tools from API docs, OpenAPI specs, or curl commands. Configures system-wide binaries with JSON output and auth handling. Claude Code Cursor GitHub Copilot 3,200installs