Claude Code skills, plugins, subagents, slash commands and mcp servers

playwright-expert https://github.com/Jeffallan skill Sets up Playwright E2E testing infrastructure, writes Page Object Model classes, and troubleshoots flaky tests using trace inspection. CX Codex Cursor GitHub Copilot 5,300installs cpp-pro https://github.com/Jeffallan skill Writes, optimizes, and debugs C++ with concepts, ranges, coroutines, SIMD, and template metaprogramming. Built for C++20/23 projects where performance and type safety matter. CX Codex Cursor GitHub Copilot 5,300installs ai-image-generation 101-skills skill Generates and edits images through belt with selectable models. Use it for illustrations, mockups, and changes to existing images. CX Codex Cursor GitHub Copilot 861,200installs twitter-automation 101-skills skill Automates Twitter and X interactions through the belt command-line interface. It posts content, manages direct messages, tracks profiles, and handles likes. CX Codex Cursor GitHub Copilot 861,000installs browser-extension-builder sickn33 skill Guides the architecture and implementation of Manifest V3 browser extensions for Chrome and Firefox. Useful when structuring content scripts, popups, and service workers. CX Codex Cursor GitHub Copilot 2,000installs scroll-experience sickn33 skill This skill guides an agent through scroll animations, parallax scenes, and interactive web narratives. Use it when scrolling should reveal part of a page’s story. CX Codex Cursor GitHub Copilot 2,000installs agent-memory-systems sickn33 skill Skill for designing agent memory with per-user and per-tenant isolation. Build RAG, conversation history, and vector stores so that one client's data stays separate from another. CX Codex Cursor GitHub Copilot 2,000installs vision-analysis MiniMax-AI skill Describes images, extracts text, and reviews UI mockups using the MiniMax vision MCP tool. Handy when an agent needs to understand a screenshot or design file. CX Codex Cursor GitHub Copilot 2,700installs android-native-dev MiniMax-AI skill Guides AI agents through native Android development: project scaffolding, Gradle setup, Jetpack Compose dependencies, and product flavors. CX Codex Cursor GitHub Copilot 2,700installs eas-update expo skill Skill for configuring and publishing updates via EAS Update. Delivers JavaScript and asset changes to installed apps without rebuilding native code. CX Codex Cursor GitHub Copilot 10,600installs sigma sanyuan0704 skill Personal tutor with level diagnosis, Socratic dialogue, and mastery gating. No direct answers — guides through questions until 80% threshold. CX Codex Cursor GitHub Copilot 4,800installs content-marketer VoltAgent Community subagent This subagent plans content, prepares SEO and multi-channel campaigns, and tracks their results. Use it to build an editorial plan or coordinate a campaign. 4,038installs kotlin-specialist https://github.com/Jeffallan skill This skill guides Kotlin work with coroutines, Flow, KMP, Compose, and Ktor. Use it when an implementation needs structured concurrency, shared code, or Kotlin UI patterns. CX Codex Cursor GitHub Copilot 5,200installs freeze garrytan skill The skill blocks Edit, Write and NotebookEdit outside one directory. The hook returns a deny, not a warning. CX Codex Cursor GitHub Copilot 352installs database-lookup K-Dense-AI skill Queries 80 documented public database APIs with explicit filters, pagination, and provenance. It is useful when scientific or financial facts require reproducible citations. CX Codex Cursor GitHub Copilot 2,100installs seaborn K-Dense-AI skill A skill that gets your coding agent building seaborn plots from pandas DataFrames: distributions, regressions, pairplots and heatmaps, written against the current API. CX Codex Cursor GitHub Copilot 2,100installs hypothesis-generation K-Dense-AI skill Turns raw observations into testable hypotheses, rival explanations, and preregistration analysis plans without mistaking tentative claims for proven facts. CX Codex Cursor GitHub Copilot 2,100installs markitdown K-Dense-AI skill A Claude Code skill that runs Microsoft MarkItDown over PDFs, Office files, HTML and CSV so the text ends up as Markdown ready for search or RAG. CX Codex Cursor GitHub Copilot 2,100installs react-pdf vercel-labs skill Renders PDF documents from JSON specs using @react-pdf/renderer. Use it when you need to build invoices, reports, or forms programmatically from structured data. CX Codex Cursor GitHub Copilot 2,300installs processize slavingia skill Turns a software product idea into a manual workflow you can run today. Helps validate value with paying users before writing any code. CX Codex Cursor GitHub Copilot 2,500installs company-values slavingia skill Guides founders through defining company values and culture before hiring. It turns beliefs and work situations into practical team principles. CX Codex Cursor GitHub Copilot 2,500installs simplify-code Hermes Agent (inspired by Claude Code /simplify) skill Reviews recent code changes through four parallel subagents and applies justified cleanup fixes. Use it after edits to simplify code that already works. CX Codex Cursor GitHub Copilot 345installs draft-nda phuryn skill This skill drafts a detailed non-disclosure agreement between two parties, covering information types, jurisdiction, and marking sections that require legal review. CX Codex Cursor GitHub Copilot 2,600installs plan-devex-review garrytan skill An interactive read of a plan from the developer's side: it flags where someone opening the project for the first time will stumble, and asks before editing. CX Codex Cursor GitHub Copilot 347installs brand-extract nexu-io skill Extracts a complete brand kit from a live website via the in-app browser. Gathers semantic colors, fonts, logos, and generates brand.json. CX Codex Cursor GitHub Copilot 1,100installs golang-pkg-go-dev samber skill Queries Go package docs, API signatures, examples, and CVEs via godig and pkg.go.dev. Inspects external dependencies directly in agent chat. CX Codex Cursor GitHub Copilot 11,700installs debugging-wizard https://github.com/Jeffallan skill Investigates errors, stack traces, and logs to locate failure points. Use it for crashes, exceptions, regressions, or code that behaves unexpectedly. CX Codex Cursor GitHub Copilot 5,100installs secure-code-guardian https://github.com/Jeffallan skill A skill for implementing custom authentication, input validation, and OWASP Top 10 defences. Use it when building your own authorization system instead of pre-built OAuth. CX Codex Cursor GitHub Copilot 5,100installs state-machine jakubkrehel skill Builds a throwaway page for every reachable state of one component, using mock data and a switcher. Use it when visual work needs isolated states without changing the component. CX Codex Cursor GitHub Copilot 3,500installs recsys-pipeline-architect Seth Hobson skill Designs six-stage recommendation, ranking, and feed pipelines. Use it when a system must choose the top K items for a user and context. CX Codex Cursor 4,200installs binary-ninja-reverse zhaoxuya520 skill Guides binary analysis in Binary Ninja using HLIL, MLIL, and LLIL representations. Useful for tracing cross-references, inspecting exports, and reviewing binary patches. CX Codex Cursor GitHub Copilot 587installs ccxt-cli ccxt skill Teaches the agent to query cryptocurrency exchanges via the ccxt CLI, fetching tickers, OHLCV data, balances, and placing orders from the terminal. CX Codex Cursor GitHub Copilot 521installs setup-browser-cookies garrytan skill This skill transfers cookies from your local Chromium browser into a headless browsing session. Use it to test authenticated sites without re-entering credentials each run. CX Codex Cursor GitHub Copilot 342installs shopify-development sickn33 skill Skill for building Shopify apps, extensions and themes using GraphQL Admin API, Shopify CLI, Polaris UI, and Liquid. Routes tasks to the right track: app, extension, theme or combination. CX Codex Cursor GitHub Copilot 1,900installs code-review agno-team skill Automated code inspection for style violations, bugs, and best-practice gaps. The skill runs linting, identifies issues, and delivers structured feedback with severity levels. CX Codex Cursor GitHub Copilot 472installs shopify-expert https://github.com/Jeffallan skill Skill for building Shopify themes, apps, and headless storefronts via Storefront API. Useful when you need to assemble a Liquid theme, custom checkout, or Hydrogen storefront. CX Codex Cursor GitHub Copilot 5,000installs sre-engineer https://github.com/Jeffallan skill Defines quantitative SLOs, calculates error budgets, configures Prometheus alerts, and automates operational toil. Useful when running scalable production services. CX Codex Cursor GitHub Copilot 5,000installs wt-switch-create max-sixty skill Creates a worktrunk worktree and switches the active session into it, optionally in another repository. Useful when isolating tasks or starting a session in a clean branch. CX Codex Cursor GitHub Copilot 1,400installs blogwatcher JulienTant (fork of Hyaxia/blogwatcher) skill Connects the blogwatcher-cli feed manager to your agent for RSS and Atom monitoring. Tracks new posts and maintains read status across blogs. CX Codex Cursor GitHub Copilot 335installs business-analyst VoltAgent Community subagent This subagent examines business processes, gathers requirements, and turns findings into solution recommendations. Use it when work needs a clear business and technical link. 3,855installs