AI Tool Atlas
116 documented

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…
MCP servers for Claude Code and CursorClaude Code plugins and marketplaceClaude Code skillsCursor rulesWhat is an MCP server? A plain explanation for 2026

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Rules & instructions

AGENTS.md

by AGENTS.md (Agentic AI Foundation, Linux Foundation)

Open Markdown format that gives coding agents project instructions, a README for agents read by Codex, Cursor, Gemini CLI, Windsurf and more.

Does
4 things
Install
5 steps
Works with
4 hosts
Plugin Apache-2.0

Gemini CLI Extensions

by Google

Gemini CLI extensions package prompts, MCP servers, commands, themes, hooks, sub-agents and skills; installed from GitHub.

Does
5 things
Install
4 steps
Works with
Gemini CLI
Rules & instructions Apache-2.0

GEMINI.md

by Google

Context files named GEMINI.md that give Gemini CLI project instructions, personas and style guides on every prompt.

Does
6 things
Install
5 steps
Works with
Gemini CLI
MCP server MIT

Hugging Face MCP Server

by Hugging Face

Official Hugging Face MCP server: connect an LLM to the Hub and Gradio Spaces, hosted at huggingface.co/mcp or run locally.

Does
5 things
Install
5 steps
Works with
4 hosts
MCP server Apache-2.0

MongoDB MCP Server

by MongoDB

Official MongoDB MCP server: query and manage MongoDB databases and Atlas from an AI agent, with a read-only mode.

Does
6 things
Install
5 steps
Works with
4 hosts
MCP server

Stripe MCP Server

by Stripe

Stripe's MCP server to call Stripe APIs from AI agents, hosted at mcp.stripe.com or run locally with npx.

Does
5 things
Install
4 steps
Works with
Any MCP client, Gemini CLI
MCP server

Vercel MCP

by Vercel

Vercel's official remote MCP server: search docs, manage projects and deployments, read logs and Web Analytics from your AI tool.

Does
5 things
Install
4 steps
Works with
6 hosts