Use 404.directory

Q: What is a Claude Code skill and how does the Use 404.directory 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. Use 404.directory is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: devops · Last updated: 2026-08-26

cloud:cloudflare

Use the public 404.directory MCP server to search current official OpenAI, Microsoft Learn, AWS, and Cloudflare documentation, verify public web deployments, understand webpages, and discover or invoke trusted read-only MCP tools.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Use 404.directory when a technical task needs current first-party documentation, when a user asks for independent evidence that a public deployment is live, or when an Agent must discover an MCP capability without trusting a directory rank alone. The hosted server exposes 12 read-only tools over Streamable HTTP. It can search official OpenAI, Microsoft Learn, AWS, and Cloudflare documentation in one call, produce structured deployment evidence, and compare catalog tools using ownership, availability, compatibility, security, and usage signals.

What this skill does

Use 404.directory is a community-contributed Claude Code skill in the devops sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/use-404-directory/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Use 404.directory Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 191,000+ 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/use-404-directory
curl -L https://claudskills.com/skills/use-404-directory/SKILL.md \
  -o ~/.claude/skills/use-404-directory/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/use-404-directory/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/use-404-directory/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\use-404-directory\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 Use 404.directory Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/use-404-directory/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Use 404.directory 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 Use 404.directory skill?

Use Use 404.directory when your Claude Code task falls under the Engineering category — specifically in the devops 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 Use 404.directory" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Use 404.directory 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. Use 404.directory is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/agentskillexchange/skills/blob/HEAD/skills/use-404-directory/SKILL.md
License: MIT
Author: agentskillexchange
Website: https://agentskillexchange.com

Cite this skill

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

APA

agentskillexchange. (2026). Use 404.directory [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/use-404-directory/

BibTeX

@misc{use-404-directory-2026,
  author    = {agentskillexchange},
  title     = {Use 404.directory [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/use-404-directory/}
}

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/use-404-directory.svg)](https://claudskills.com/skills/use-404-directory/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-08-26 — 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/use-404-directory/#security)

More Engineering skills

Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Engineering skills → Top 100 skills

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

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