File Access Preflight

Q: What is a Claude Code skill and how does the File Access Preflight 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. File Access Preflight 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: operations · Last updated: 2026-07-23

Run the pre-flight checklist before an agent gets filesystem access — the scope boundary (which directories, read vs write), the secrets-exposure sweep, the destructive-operation gates, and the path-traversal and untrusted-file defenses. Use when asked let my agent access my files safely, is it safe to give the agent file/computer access, guardrails before the agent touches my filesystem, or scope down my coding agent's reach. Produces the scope boundary, the secrets sweep, the write/delete gates, and the untrusted-content rules.

Security BStatic scan: minor findingsHow grading works ›

About this skill (catalog notes)

File Access Preflight is published as a SKILL.md file in this catalog. The SKILL.md runs to about 944 words, in the catalog's typical mid-range.

Source: mohitagw15856.github.io/pm-claude-skills
License: MIT
Original author: mohitagw15856
Indexed lastmod: 2026-07-23
Catalog position: General · operations
Indexed related skills: 10

How File Access Preflight fits the catalog

File Access Preflight sits in the General category under the operations 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.

From the source SKILL.md

Filesystem access is where an agent goes from talking to doing — and the two failure modes are opposite: reading too much (the agent slurps your .env, SSH keys, and password manager export into its context and thence into logs and API calls) and writing too much (a confused or hijacked agent overwrites, deletes, or rm -rfs outside its lane). The seatbelt: draw the scope boundary tightly, sweep for the secrets that must never enter context, gate the destructive operations, and treat file contents as untrusted input — because a file the agent reads can carry instructions just like an email or a…

What this skill does

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

When to invoke it: Use when asked let my agent access my files safely, is it safe to give the agent file/computer access, guardrails before the agent touches my filesystem, or scope down my coding agent's reach. Produces the scope boundary, the secrets sweep, the write/delete gates, and the untrusted-content rules.

Who uses this skill

The File Access Preflight 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 174,000+ 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/file-access-preflight
curl -L https://claudskills.com/skills/file-access-preflight/SKILL.md \
  -o ~/.claude/skills/file-access-preflight/SKILL.md

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

Skills live at ~/.claude/skills/file-access-preflight/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\file-access-preflight\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 File Access Preflight Claude Code skill?

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

What does the File Access Preflight 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 File Access Preflight skill?

Use File Access Preflight when your Claude Code task falls under the General category — specifically in the operations 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 File Access Preflight" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the File Access Preflight 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. File Access Preflight 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/mohitagw15856/pm-claude-skills/blob/HEAD/exports/openclaw/file-access-preflight/SKILL.md
License: MIT
Author: mohitagw15856
Website: https://mohitagw15856.github.io/pm-claude-skills/

Cite this skill

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

APA

mohitagw15856. (2026). File Access Preflight [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/file-access-preflight/

BibTeX

@misc{file-access-preflight-2026,
  author    = {mohitagw15856},
  title     = {File Access Preflight [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/file-access-preflight/}
}

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/file-access-preflight.svg)](https://claudskills.com/skills/file-access-preflight/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade B · scanned 2026-08-02 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 2 of 10 categories (credentials, filesystem), including a high-severity pattern. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.

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

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

[![Security: B](https://img.shields.io/badge/Security-B-558b2f)](https://claudskills.com/skills/file-access-preflight/#security)

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

Browse all General 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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