Agent Skill Hub

Open-source Agent Skills, Claude Code and Cursor plugins, MCP servers, agent harnesses and CLIs for AI coding agents. 44 entries, each with a source link, license and last-verified date.

Recently added

• Plugin marketplace

  wshobson/agents

  One catalog of 94 plugins with about 200 agents, 185 skills and 105 commands, adapted for Claude Code, Codex CLI, Cursor, OpenCode, GitHub Copilot and Pi.

  • subagents
  • plugins
  • multi-harness
• Skill pack

  Superpowers

  A software development methodology delivered as composable skills: brainstorming, writing and executing plans, test-driven development, systematic debugging, subagent-driven development and verification before completion.

  • workflow
  • tdd
  • debugging
  • planning
• Library

  Stagehand

  TypeScript browser automation framework that mixes code with natural-language act, extract and observe steps, and runs a local browser or Browserbase.

  • browser
  • extraction
  • typescript
• CLI for agents

  Spec Kit

  Toolkit that gives coding agents structured processes and templates, starting with spec-driven development, plus extensions for bug fixing and assessment.

  • workflow
  • planning
  • spec-driven
• MCP server

  Serena

  MCP server that gives agents IDE-like semantic tools: symbol-level code retrieval, editing, refactoring and debugging through language servers.

  • code-navigation
  • mcp
  • lsp
• Plugin

  pstack

  poteto's Cursor plugin of rigorous engineering skills (poteto-mode, interrogate, tdd, create-verification-skill, no-comments and about 30 principle skills), also installable in Claude Code.

  • workflow
  • verification
  • code-quality
  • principles
• MCP server

  Playwright MCP

  MCP server that drives a browser with Playwright through structured accessibility snapshots, so models act on pages without screenshots.

  • browser
  • mcp
  • testing
• CLI for agents

  Playwright CLI

  Playwright command-line interface shipped with skills, aimed at coding agents that prefer concise CLI calls over large MCP tool schemas.

  • browser
  • cli
  • token-efficient

Skill (2)

• Skill

  ego lite (ego-browser skill)

  The ego-browser agent skill and its open-source Node.js CDP harness for the ego lite browser: the agent runs ego-browser skill for a version-matched guide, then sends JavaScript that calls snapshot, fill, click, wait, navigate and capture inside its own isolated Space.

  • browser
  • agent-skills
  • macos
• Skill

  live-panel

  Agent skill and stdlib Python renderer that turns one JSON config into an always-running terminal-style or pastel architecture diagram, with flowing packets, a scrolling log and counters, rendered to an H.264 mp4 or a self-contained looping web page.

  • video
  • rendering
  • agent-skills

Skill pack (3)

• Skill pack

  Anthropic Agent Skills

  Anthropic's public Agent Skills: document skills (docx, pdf, pptx, xlsx), skill-creator, mcp-builder, frontend-design, webapp-testing and more, plus the Agent Skills spec and a template.

  • agent-skills
  • official
  • documents
  • skill-authoring
• Skill pack

  gstack

  Garry Tan's skill pack that turns Claude Code and other agents into a virtual engineering team: office hours, CEO and eng plan reviews, design review, code review, QA with a real browser, security audit and ship.

  • workflow
  • code-review
  • qa
  • browser
• Skill pack

  Superpowers

  A software development methodology delivered as composable skills: brainstorming, writing and executing plans, test-driven development, systematic debugging, subagent-driven development and verification before completion.

  • workflow
  • tdd
  • debugging
  • planning

Plugin (3)

• Plugin

  Continual Learning (Cursor plugin)

  Cursor plugin that keeps AGENTS.md up to date from transcript changes, using a stop hook plus a continual-learning skill that writes short high-signal bullets.

  • memory
  • agents-md
  • hooks
• Plugin

  pstack

  poteto's Cursor plugin of rigorous engineering skills (poteto-mode, interrogate, tdd, create-verification-skill, no-comments and about 30 principle skills), also installable in Claude Code.

  • workflow
  • verification
  • code-quality
  • principles
• Plugin

  Ralph Loop (Cursor plugin)

  Runs Cursor in a self-referential loop with afterAgentResponse and stop hooks, feeding the same prompt back until a completion promise appears or an iteration cap is hit.

  • loop
  • hooks
  • autonomy

Plugin marketplace (3)

• Plugin marketplace

  Claude Code Plugins Directory

  Anthropic's curated Claude Code plugin directory: internal plugins such as code-review, feature-dev, hookify, plugin-dev, LSP integrations and ralph-loop, plus partner plugins under external_plugins.

  • plugins
  • official
  • marketplace
  • code-review
• Plugin marketplace

  Cursor Plugins

  Cursor's official multi-plugin marketplace: pstack, thermos, ralph-loop, continual-learning, orchestrate, advisor, cursor-team-kit and integrations such as GitHub, Playwright and X.

  • plugins
  • official
  • marketplace
• Plugin marketplace

  wshobson/agents

  One catalog of 94 plugins with about 200 agents, 185 skills and 105 commands, adapted for Claude Code, Codex CLI, Cursor, OpenCode, GitHub Copilot and Pi.

  • subagents
  • plugins
  • multi-harness

MCP server (9)

• MCP server

  Chrome DevTools MCP

  Lets a coding agent control and inspect a live Chrome through DevTools, as an MCP server or a CLI, for automation, debugging and performance traces.

  • browser
  • mcp
  • debugging
  • performance
• MCP server

  Cloudflare MCP Servers

  Cloudflare's domain-specific remote MCP servers (docs, Workers bindings, observability and more) over Streamable HTTP; the README recommends the newer Cloudflare API MCP server.

  • cloud
  • deploy
  • mcp
  • official
• MCP server

  Context7

  MCP server and CLI that fetch current, version-specific library documentation and code examples into the agent's context.

  • docs
  • mcp
  • context
• MCP server

  Firecrawl MCP Server

  MCP server for Firecrawl: search, scrape and interact with the live web and get clean Markdown or structured data back.

  • web
  • scraping
  • mcp
  • research
• MCP server

  GitHub MCP Server

  GitHub's official MCP server for reading repositories and code, managing issues and pull requests, and monitoring Actions runs.

  • github
  • mcp
  • official
• MCP server

  LinkedIn MCP Server

  Python MCP server that drives LinkedIn through the user's own browser session with Patchright: tools read profiles, companies, employees, jobs, the feed, posts and the inbox, and a smaller set sends messages, connection requests and job dismissals.

  • mcp
  • browser
  • python
• MCP server

  MCP reference servers

  Reference MCP server implementations maintained by the MCP steering group: everything, fetch, filesystem, git, memory, sequential thinking and time.

  • mcp
  • reference
  • official
• MCP server

  Playwright MCP

  MCP server that drives a browser with Playwright through structured accessibility snapshots, so models act on pages without screenshots.

  • browser
  • mcp
  • testing
• MCP server

  Serena

  MCP server that gives agents IDE-like semantic tools: symbol-level code retrieval, editing, refactoring and debugging through language servers.

  • code-navigation
  • mcp
  • lsp

Agent harness (4)

• Agent harness

  Claude Code

  Anthropic's agentic coding tool for the terminal, IDE and GitHub. The public repository holds the changelog, issue tracker and example plugins.

  • coding-agent
  • terminal
  • official
  • headless
• Agent harness

  Codex CLI

  OpenAI's open-source coding agent for the terminal, with IDE integrations; supports AGENTS.md and skills.

  • coding-agent
  • terminal
  • official
• Agent harness

  OpenCode

  Open-source terminal coding agent that works with many model providers, with a desktop app and an npm CLI.

  • coding-agent
  • terminal
  • multi-provider
• Agent harness

  Pi

  A minimal, extensible coding-agent harness: customise it with extensions, skills, prompt templates and themes; run it interactively, in print or JSON mode, over RPC or through its TypeScript SDK.

  • coding-agent
  • terminal
  • extensible
  • headless

CLI for agents (6)

• CLI for agents

  agent-browser

  Native Rust CLI that gives an agent a persistent browser: snapshot returns the page as compact text with element refs, and the agent acts on refs one command at a time.

  • browser
  • cli
  • token-efficient
• CLI for agents

  ccusage

  CLI that analyses coding-agent token usage and cost from local session data, with daily, monthly and session reports.

  • cost
  • observability
  • cli
• CLI for agents

  lark-cli

  Official Lark and Feishu CLI built for humans and agents, covering Messenger, Docs, Base, Sheets, Calendar, Mail, Tasks and more, with 24 bundled agent skills.

  • feishu
  • productivity
  • agent-skills
  • official
• CLI for agents

  MCP Inspector

  Developer tool for inspecting MCP servers through a web UI, a scriptable CLI, a terminal UI and an experimental connection daemon.

  • mcp
  • testing
  • official
• CLI for agents

  Playwright CLI

  Playwright command-line interface shipped with skills, aimed at coding agents that prefer concise CLI calls over large MCP tool schemas.

  • browser
  • cli
  • token-efficient
• CLI for agents

  Spec Kit

  Toolkit that gives coding agents structured processes and templates, starting with spec-driven development, plus extensions for bug fixing and assessment.

  • workflow
  • planning
  • spec-driven

Agent SDK (1)

• Agent SDK

  Claude Agent SDK for Python

  Python SDK that exposes Claude Code's agent loop, tools, hooks and MCP support so you can build your own agents in Python 3.10+.

  • sdk
  • python
  • official
  • agent-loop

Library (3)

• Library

  Browser Use

  Open-source browser agent library that runs locally with any LLM; a paid cloud adds hosted browsers.

  • browser
  • agent-loop
  • python
• Library

  HyperFrames

  Open-source framework that renders HTML, CSS, media and seekable animations into deterministic MP4 video, with agent skills for Claude Code, Codex and Cursor.

  • video
  • rendering
  • agent-skills
• Library

  Stagehand

  TypeScript browser automation framework that mixes code with natural-language act, extract and observe steps, and runs a local browser or Browserbase.

  • browser
  • extraction
  • typescript

Model gateway (2)

• Model gateway

  Claude Code Router

  Local model gateway and control plane that gives Claude Code, Codex, OpenCode, Pi and other clients one endpoint, with routing, failover and observability across providers.

  • gateway
  • routing
  • multi-provider
• Model gateway

  magpie

  Menu-bar app and local gateway that serves every coding agent's model from one place and moves to the next account when a quota runs out.

  • gateway
  • routing
  • macos
  • multi-provider

Curated list (7)

• Curated list

  Awesome Claude Code

  A hand-picked list of Claude Code resources: skills, hooks, slash commands, status lines, orchestrators and applications, with a recently-added section.

  • awesome-list
  • discovery
• Curated list

  Awesome Claude Code Subagents

  A collection of Claude Code subagent definitions for specific development tasks, installable as a Claude Code plugin.

  • subagents
  • awesome-list
• Curated list

  Awesome Claude Skills (Composio)

  A large list of Claude Skills and plugins, with some skills stored in the repo (skill-creator, mcp-builder, file-organizer, content-research-writer and others).

  • awesome-list
  • agent-skills
  • discovery
• Curated list

  Awesome Claude Skills (travisvn)

  A curated list of Claude Skills, resources and tools, with an explanation of how skills load through progressive disclosure.

  • awesome-list
  • agent-skills
  • discovery
• Curated list

  Awesome MCP Servers

  A curated list of Model Context Protocol servers grouped by category, plus clients and other MCP resources.

  • awesome-list
  • mcp
  • discovery
• Curated list

  Claude Code Templates

  An open catalog (aitmpl.com) of about 1,900 Claude Code components: skills, agents, slash commands, MCP integrations, settings, hooks and project templates, installable with one command.

  • templates
  • hooks
  • discovery
• Curated list

  MCP Registry

  The official registry service that gives MCP clients a list of MCP servers, with a public API at registry.modelcontextprotocol.io.

  • mcp
  • registry
  • official
  • api

Spec or format (1)

• Spec or format

  AGENTS.md

  A simple open format, a README for agents, that gives coding agents a predictable place for project context and instructions.

  • agents-md
  • format
  • context