Every Claude skill, MCP server and plugin in one directory.
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Spotted this weekby juliusbrussee391k installs
caveman. Cuts token usage ~75% by talking like a caveman. Genuinely works, and the whole site speaks it back.
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Popular Skills
- 01find-skillsHelps users discover and install agent skills when they ask questions like "how do I do X", "find a skill for X", "is thinstalls
- 02grill-meA relentless interview to sharpen a plan or design.installs
- 03agent-browserBrowser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filinstalls
- 04react-best-practicesReact and Next.js performance optimization guidelines from Vercel Engineering.installs
- 05grill-with-docsA relentless interview to sharpen a plan or design, which also creates docs (ADR's and glossary) as we go.installs
- 06web-design-guidelinesReview UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit installs
- 07microsoft-foundryDeploy, evaluate, fine-tune, and manage Foundry agents end-to-end with azd: hosted agent scaffold/run/deploy, prompt ageinstalls
- 08azure-aiUse for Azure AI: Search, Speech, OpenAI, Document Intelligence. Helps with search, vector/hybrid search, speech-to-textinstalls
- 09remotion-best-practicesRouter for all Remotion skillsinstalls
- 10ai-image-generationGenerate AI images with GPT-Image-2, FLUX, Gemini, Grok, Seedream, Reve and 50+ models via inference.sh CLI.installs
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DevOps & CI/CD6,521Productivity & Workflow6,157Product & Project Management5,749Code Review & Refactor5,609Backend & APIs5,556Documentation & Knowledge5,320Other5,279Agent Meta & Communication4,187Security3,745Research3,674AI Agents & MCP3,513Testing & QA3,216UX UI & Design3,100Finance & Trading2,906Generative Media2,869Frontend Development2,631
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Frequently asked
What is aaaa.fyi?+
A directory for the AI agent ecosystem: agent skills, MCP servers, plugins and subagents, searchable, filterable, and installable with one command.
Why is it called aaaa?+
Your fingers are already resting on the A key. We checked.
What are agent skills?+
Reusable instruction sets (SKILL.md files) that teach an AI coding agent a specific task. Install one with a single command and your agent picks up the capability.
What are MCP servers?+
Servers built on the Model Context Protocol that extend an agent with tools, APIs and integrations, browsers, databases, GitHub, and more.
What are plugins?+
Bundles of skills, subagents, hooks and MCP servers shipped as one installable package for coding agents like Claude Code. Install a plugin and you get everything inside it in one step.
What are subagents?+
Specialized assistants for coding agents, each a single markdown file with its own prompt, tool access and context window. Drop one in and delegate focused tasks to it.