Permissions Builder

Q: What is a Claude Code skill and how does the Permissions Builder 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. Permissions Builder 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: ai-tooling · Last updated: 2026-10-25

ai:claude ai:mcp

Build a least-privilege .claude/settings.json permission set from what a project actually needs: generate MCP rules with claude-mcp-allow, merge them with your own allow, ask and deny lists, put deny first, diff against the current file, then test the result with claude-perm-sim against the commands the team runs. Use when asked \"set up permissions for this repo\" or to stop approving the same prompts. Not for sandboxing or for organisation-wide managed settings.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Most permission files grow by clicking "always allow" until they hold a wildcard nobody would have written on purpose, while the deny list that should stop rm -rf or reading .env never gets written. This skill builds the set the other way round: from the commands the team actually runs, the MCP tools the project actually uses (rules generated from each server's own read-only annotations by claude-mcp-allow), and an explicit deny list. A bundled script merges the sources, removes duplicates and conflicts, orders deny before ask before allow, and diffs the result against the current file;…

What this skill does

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

When to invoke it: Use when asked \"set up permissions for this repo\" or to stop approving the same prompts. Not for sandboxing or for organisation-wide managed settings.

Who uses this skill

The Permissions Builder 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 211,000+ 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/permissions-builder
curl -L https://claudskills.com/skills/permissions-builder/SKILL.md \
  -o ~/.claude/skills/permissions-builder/SKILL.md

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

Skills live at ~/.claude/skills/permissions-builder/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\permissions-builder\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 Permissions Builder Claude Code skill?

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

What does the Permissions Builder 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 Permissions Builder skill?

Use Permissions Builder when your Claude Code task falls under the General category — specifically in the ai tooling 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 Permissions Builder" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Permissions Builder 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. Permissions Builder 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/basitalisandhu/claude-skills/blob/HEAD/plugins/cc-setup-tooling/skills/permissions-builder/SKILL.md
License: MIT
Author: basitalisandhu
Website: https://basitalisandhu.github.io/claude-skills/

Cite this skill

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

APA

basitalisandhu. (2026). Permissions Builder [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/permissions-builder/

BibTeX

@misc{permissions-builder-2026,
  author    = {basitalisandhu},
  title     = {Permissions Builder [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/permissions-builder/}
}

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

Security scan

Grade A · scanned 2026-10-25 — 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/permissions-builder/#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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