116 documented

Skills · plugins · MCP · rules114 official

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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

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Gemini CLI9 extensions

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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…

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Rules & instructions

CLAUDE.md

by Anthropic

Markdown files of persistent project, user and org instructions that Claude Code loads at the start of every session.

Does: 6 things
Install: 5 steps
Works with: Claude Code