Detecting Directory Listing

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

Category: Security · Sub-category: threat-hunting · Last updated: 2026-06-01

type:audit

Probe a target for directories that return auto-generated index listings instead of denying or serving a specific file — exposes the full file tree under any reachable directory, including files the application never linked to. Use when: post-deploy verification on a static-asset host, security audit before SOC2, or following up on a finding from skill #6 (exposed-files) where a backup-file path returned 200 with HTML body instead of the expected file content (suggests autoindex serving a directory listing). Threshold: any directory-shaped path returns 200 with HTML body matching the framework-specific autoindex fingerprint (nginx fancyindex, Apache mod_autoindex Index of/, Caddy browse, Lighttpd mod_dirlisting, etc.). Trigger with: "directory listing check", "autoindex detection", "open directory scan".

About this skill (catalog notes)

Detecting Directory Listing includes a dedicated installation section; worked examples; 6 code blocks for direct copy-paste. The SKILL.md runs to about 832 words, in the catalog's typical mid-range.

Source: tonsofskills.com
License: MIT
Original author: Jeremy Longshore <[email protected]>
Indexed lastmod: 2026-06-01
Catalog position: Security · threat-hunting
Indexed related skills: 10

How Detecting Directory Listing fits the catalog

Detecting Directory Listing sits in the Security category under the threat-hunting sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

What this skill does

Detecting Directory Listing is a community-contributed Claude Code skill in the threat-hunting sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/detecting-directory-listing/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when: post-deploy verification on a static-asset host, security audit before SOC2, or following up on a finding from skill #6 (exposed-files) where a backup-file path returned 200 with HTML body instead of the expected file content (suggests autoindex serving a directory listing). Threshold: any directory-shaped path returns 200 with HTML body matching the framework-specific autoindex fingerprint (nginx fancyindex, Apache mod_autoindex Index of/, Caddy browse, Lighttpd mod_dirlisting, etc.

Who uses this skill

The Detecting Directory Listing Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 77,000+ 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/detecting-directory-listing
curl -L https://claudskills.com/skills/detecting-directory-listing/SKILL.md \
  -o ~/.claude/skills/detecting-directory-listing/SKILL.md

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

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

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 Detecting Directory Listing Claude Code skill?

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

What does the Detecting Directory Listing 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 Detecting Directory Listing skill?

Use Detecting Directory Listing when your Claude Code task falls under the Security category — specifically in the threat hunting 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 Detecting Directory Listing" or describe the task and let Claude pick). Browse related skills at /category/security/.

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

Attribution & license

Source: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/HEAD/plugins/security/penetration-tester/skills/detecting-directory-listing/SKILL.md
License: MIT
Author: Jeremy Longshore <[email protected]>
Website: https://tonsofskills.com

Cite this skill

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

APA

Jeremy Longshore <[email protected]>. (2026). Detecting Directory Listing [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/detecting-directory-listing/

BibTeX

@misc{detecting-directory-listing-2026,
  author    = {Jeremy Longshore <[email protected]>},
  title     = {Detecting Directory Listing [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/detecting-directory-listing/}
}

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Badge

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