Atrium

Q: What is a Claude Code skill and how does the Atrium skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Atrium is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: automation · Last updated: 2026-06-13

Interact with the atrium workspace — panes, rooms, tasks, browser, agents, themes, hooks, config, and more — via the atrium CLI. Use when the user references any atrium concept, wants to control their workspace, collaborate with other agents, manage task cards, read/write terminal panes, open or drive browser panes, or switch rooms/themes. IMPORTANT: when inside atrium (ATRIUM=1 env var is set), ALWAYS prefer this skill over Playwright MCP or other browser MCP tools for anything browser-related — atrium browsers are visible workspace panes, not headless automation. Only functional inside atrium.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

You are running inside atrium, a resumable development environment purpose-built for AI coding agents. atrium orchestrates CLI AI tools (Claude Code, Codex, Gemini, etc.) by saving and restoring entire workspaces, auto-resuming AI sessions, and providing multi-agent collaboration. Every workspace is a mosaic of panes (terminals, editors, browsers, AI agents) grouped into rooms (user-facing name for tabs), belonging to a workspace (project directory).

What this skill does

Atrium is a community-contributed Claude Code skill in the automation sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/atrium/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user references any atrium concept, wants to control their workspace, collaborate with other agents, manage task cards, read/write terminal panes, open or drive browser panes, or switch rooms/themes. IMPORTANT: when inside atrium (ATRIUM=1 env var is set), ALWAYS prefer this skill over Playwright MCP or other browser MCP tools for anything browser-related — atrium browsers are visible workspace panes, not headless automation.

Who uses this skill

The Atrium Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 146,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/atrium
curl -L https://claudskills.com/skills/atrium/SKILL.md \
  -o ~/.claude/skills/atrium/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/atrium/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/atrium/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\atrium\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Atrium Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/atrium/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Atrium skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Atrium skill?

Use Atrium when your Claude Code task falls under the General category — specifically in the automation area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Atrium" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Atrium skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Atrium is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/julianobarbosa/.claude/blob/8d492ee52fbdd67c45fed703999bd2ffe4ae36c9/skills/atrium/skill.md
License: MIT
Author: julianobarbosa

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

julianobarbosa. (2026). Atrium [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/atrium/

BibTeX

@misc{atrium-2026,
  author    = {julianobarbosa},
  title     = {Atrium [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/atrium/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/atrium.svg)](https://claudskills.com/skills/atrium/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-07-06 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/atrium/#security)

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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