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Cautilus Agent

Category: General  ·  Sub-category: general-misc  ·  Last updated:
type:review
Use when intentful behavior evaluation itself is the task and the repo should run Cautilus's checked-in workflow instead of reconstructing compare, held-out, and review commands by hand.
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From the source SKILL.md

Use Cautilus Agent when intentful behavior evaluation itself is the task and the repo wants to run the checked-in Cautilus workflow instead of rebuilding eval fixtures, packets, reports, claim discovery, review, or improve commands by hand. For external host repos during the current contract rewrite, treat evaluate fixture, evaluate observation, and post-run eval skill-experiment compare as stable; claim discovery automation, improve automation, live app-runner workflows, and review-learning capture remain opt-in. eval skill-experiment compare compares host-preserved baseline and variant…

What this skill does

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

When to invoke it: Use when intentful behavior evaluation itself is the task and the repo should run Cautilus's checked-in workflow instead of reconstructing compare, held-out, and review commands by hand.

Who uses this skill

The Cautilus Agent 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 196,000+ 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/cautilus-agent
curl -L https://claudskills.com/skills/cautilus-agent/SKILL.md \
  -o ~/.claude/skills/cautilus-agent/SKILL.md

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

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

Telegram

📱 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 Cautilus Agent Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/cautilus-agent/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Cautilus Agent skill do?
Use when intentful behavior evaluation itself is the task and the repo should run Cautilus's checked-in workflow instead of reconstructing compare, held-out, and review commands by hand.
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 Cautilus Agent skill?
Use Cautilus Agent when your Claude Code task falls under the General category — specifically in the general misc 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 Cautilus Agent" or describe the task and let Claude pick). Browse related skills at /category/general/.
What is a Claude Code skill and how does the Cautilus Agent 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. Cautilus Agent 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

Cite this skill

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

APA
corca-ai. (2026). Cautilus Agent [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/cautilus-agent/
BibTeX
@misc{cautilus-agent-2026,
  author    = {corca-ai},
  title     = {Cautilus Agent [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/cautilus-agent/}
}

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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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