Plugin Apache-2.0
Agent SDK Development Plugin
by Anthropic
Scaffolds new Claude Agent SDK apps in Python or TypeScript and verifies them against best practices.
- Does
- 6 things
- Install
- 4 steps
- Works with
- Claude Code
Skills · plugins · MCP · rules114 official
Which agent do you use?
Pick your host to see what plugs into it. Every entry is documented from its official repository or docs, with install steps, permissions and limits.
Claude Code84 extensions
OpenAI Codex14 extensions
Cursor32 extensions
Windsurf14 extensions
Gemini CLI9 extensions
GitHub Copilot1 extensions
Any MCP client46 extensions
Skill · 19Reusable instructions and scripts the agent loads for a taskAlgorithmic Art, brand-guidelines, Canvas Design…
Plugin · 42Bundles of skills, commands, hooks and agentsAgent SDK Development Plugin, C# LSP, clangd LSP…
MCP server · 49Connect the agent to tools, data and servicesApify MCP Server, Atlassian Rovo MCP Server, AWS API MCP Server…
Rules & instructions · 6Project instructions the agent reads every sessionAGENTS.md, CLAUDE.md, Cursor Rules…
41 extensions · Clear filters
Plugin Apache-2.0
clangd LSP
by Anthropic
C/C++ language server for Claude Code: code intelligence and diagnostics for .c files.
- Does
- 3 things
- Install
- 5 steps
- Works with
- Claude Code
Plugin Apache-2.0
Claude Code Setup
by Anthropic
Scans a codebase and recommends tailored Claude Code automations: hooks, skills, MCP servers, subagents, slash commands.
- Does
- 5 things
- Install
- 3 steps
- Works with
- Claude Code
Plugin Proprietary (see LICENSE)
Claude Security
by Anthropic
In-session deep vulnerability scanning with every finding challenged by verifiers, plus verified patch files you apply yourself.
- Does
- 5 things
- Install
- 4 steps
- Works with
- Claude Code
Plugin Apache-2.0
CLAUDE.md Management
by Anthropic
Audit CLAUDE.md quality, keep it aligned with the codebase, and capture session learnings with /revise-claude-md.
- Does
- 4 things
- Install
- 3 steps
- Works with
- Claude Code
Plugin Apache-2.0
Code Modernization
by Anthropic
Guided modernization of legacy codebases: assess, map, extract rules, plan, rebuild, and prove the new code matches the old.
- Does
- 6 things
- Install
- 5 steps
- Works with
- Claude Code
Plugin Apache-2.0
code-review
by Anthropic
Automated PR code review with 4 parallel agents and confidence scoring (threshold 80).
- Does
- 4 things
- Install
- 4 steps
- Works with
- Claude Code
Plugin Apache-2.0
code-simplifier
by Anthropic
Agent that simplifies code for clarity and maintainability while preserving behaviour.
- Does
- 3 things
- Install
- 4 steps
- Works with
- Claude Code
Plugin Apache-2.0
commit-commands
by Anthropic
Slash commands for git commit, push and PR creation in one step.
- Does
- 4 things
- Install
- 4 steps
- Works with
- Claude Code
Cursor Plugins and Marketplace
by Cursor (Anysphere)
Cursor Plugins bundle skills, MCP servers, rules, agents, commands and hooks; official ones are listed in the Cursor Marketplace.
- Does
- 5 things
- Install
- 4 steps
- Works with
- Cursor
Plugin Apache-2.0
CWC Makers
by Anthropic
One-command onboarding for the Code-with-Claude Makers M5Stack Cardputer kit: clone, flash, install apps.
- Does
- 6 things
- Install
- 4 steps
- Works with
- Claude Code
document-skills
by Anthropic
Collection of document skills: Excel, Word, PowerPoint and PDF.
- Does
- 3 things
- Install
- 4 steps
- Works with
- Claude Code
Plugin Apache-2.0
Example Plugin
by Anthropic
Reference plugin showing skills, legacy commands and MCP server config for Claude Code plugin authors.
- Does
- 4 things
- Install
- 3 steps
- Works with
- Claude Code
example-skills
by Anthropic
Collection of example skills: skill-creator, MCP builder, design, algorithmic art, comms, web testing, artifacts, Slack GIFs, themes.
- Does
- 3 things
- Install
- 4 steps
- Works with
- Claude Code
Plugin Apache-2.0
explanatory-output-style
by Anthropic
SessionStart hook adding educational insights on implementation choices (replaces deprecated output style).
- Does
- 3 things
- Install
- 4 steps
- Works with
- Claude Code
Plugin Apache-2.0
feature-dev
by Anthropic
7-phase guided feature development workflow with exploration, architecture and review agents.
- Does
- 4 things
- Install
- 4 steps
- Works with
- Claude Code
Plugin Apache-2.0
Kotlin LSP
by Anthropic
Kotlin language server for Claude Code: code intelligence and diagnostics for .kt files.
- Does
- 3 things
- Install
- 3 steps
- Works with
- Claude Code
Plugin Apache-2.0
Learning Output Style
by Anthropic
SessionStart hook that makes Claude ask you to write 5-10 lines at decision points and share educational insights.
- Does
- 5 things
- Install
- 3 steps
- Works with
- Claude Code
Plugin Apache-2.0
Math Olympiad
by Anthropic
Solves competition math (IMO, Putnam, USAMO) with context-isolated adversarial proof verification.
- Does
- 4 things
- Install
- 4 steps
- Works with
- Claude Code