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Agent skill

Auditing Access Control

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

Audit access control implementations for security vulnerabilities and misconfigurations.

MITAuto-check passedBackend & APIs

Install Auditing Access Control

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill auditing-access-control -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace auditing-access-control --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/auditing-access-control .claude/skills/auditing-access-control && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
auditing-access-control
GitHub stars
2.8k
Token cost
~1.5k tokens
SKILL.md length
659 words
Files
5 (incl. scripts, references, assets)
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Audit access control implementations for security vulnerabilities and misconfigurations.

  • Works in 10 steps: Enumerate all access control definitions… → Map each role or principal to its… → Evaluate each permission grant against… → …
  • Reviewing authentication and authorization
  • SKILL.md covers Overview, Prerequisites, Instructions and Output, plus 3 more sections
  • Runs Python scripts from its folder; calls aws and az

What it does

Auditing Access Control is an agent skill from jeremylongshore/tons-of-skills-marketplace. Audit access control implementations for security vulnerabilities and misconfigurations. Use when reviewing authentication and authorization. Trigger with 'audit access control', 'check permissions', or 'validate authorization'.

Its SKILL.md is about 1.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including scripts, reference files and assets (for example `assets/README.md`, `references/README.md` and `scripts/README.md`). Compatibility notes: Designed for Claude Code

It sits in Backend & APIs, covering Authorization and RBAC. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Reviewing authentication and authorization
  • With audit access control
  • Check permissions
  • Validate authorization

Example prompts

  • “audit access control”
  • “check permissions”
  • “validate authorization”
  • “/auditing-access-control”

Requirements

  • Python 3
  • Node.js
  • Compatibility (from SKILL.md): Designed for Claude Code
  • Pre-approved tools (allowed-tools): Read, Write, Edit, Grep, Glob, Bash(security:*), Bash(scan:*), Bash(audit:*)

Workflow steps

10 steps, taken from the first numbered list in SKILL.md.

  1. Enumerate all access control definitions by scanning for IAM policy files, RBAC configuration, ACL definitions, middleware authorization…
  2. Map each role or principal to its granted permissions, building a permission matrix that identifies which subjects access which resources…
  3. Evaluate each permission grant against the principle of least privilege -- flag any wildcard permissions (*), overly broad resource…
  4. Check for separation of duties violations where a single role combines mutually exclusive privileges (e.g., both "create user" and…
  5. Identify privilege escalation paths by tracing role inheritance chains, looking for roles that can modify their own permissions or assume…
  6. Inspect API route handlers and middleware for missing or inconsistent authorization checks -- compare route definitions against their…
  7. Verify that default-deny is enforced: confirm that unauthenticated or unauthorized requests are rejected unless explicitly allowed.
  8. Cross-reference findings against compliance requirements (NIST AC-1 through AC-25, GDPR Article 25, SOC 2 CC6.1) and flag gaps.
  9. Classify each finding by severity (critical, high, medium, low) based on exploitability and blast radius.
  10. Generate a remediation plan with specific configuration changes, code patches, or policy updates for each finding.

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Write
    • Edit
    • Grep
    • Glob
    • Bash(security:*)
    • Bash(scan:*)
    • Bash(audit:*)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 2 files in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • aws
    • az

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • cwe.mitre.org
    • cheatsheetseries.owasp.org
    • csf.tools

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Designed for Claude Code

    From compatibility in the SKILL.md frontmatter.

Context cost

Auditing Access Control loads about 1.5k tokens when it runs, and up to ~1.5k if it reads all its reference files. Until then it costs about 63 tokens; SKILL.md has 659 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~63
When it runs · the whole SKILL.md, loaded when a task matches
~1.5k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 659 words, ~1,508 tokens.

Download SKILL.mdSave it as .claude/skills/auditing-access-control/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
auditing-access-control
description
Audit access control implementations for security vulnerabilities and misconfigurations. Use when reviewing authentication and authorization. Trigger with 'audit access control', 'check permissions', or 'validate authorization'.
allowed-tools
Read, Write, Edit, Grep, Glob, Bash(security:*), Bash(scan:*), Bash(audit:*)
compatibility
Designed for Claude Code
version
1.24.0
license
MIT
author
Jeremy Longshore <jeremy@intentsolutions.io>
tags
security, authentication, audit

Access Control Auditing

Overview

Audit access control implementations across codebases, cloud configurations, and application layers for security vulnerabilities and policy violations. This skill targets IAM policies, ACLs, RBAC configurations, file permissions, and API authorization logic to identify privilege escalation paths, overly permissive grants, and violations of the principle of least privilege.

Prerequisites

  • Access to the target codebase and configuration files in ${CLAUDE_SKILL_DIR}/
  • Familiarity with the authorization model in use (RBAC, ABAC, ACL, or IAM)
  • grep, find, and standard shell utilities available via Bash
  • For cloud audits: CLI tools such as aws iam, gcloud, or az role installed and authenticated
  • Reference: ${CLAUDE_SKILL_DIR}/references/README.md for IAM best practices, ACL vulnerability patterns, and NIST/GDPR access control standards

Instructions

  1. Enumerate all access control definitions by scanning for IAM policy files, RBAC configuration, ACL definitions, middleware authorization checks, and .htaccess or equivalent files using Glob and Grep.
  2. Map each role or principal to its granted permissions, building a permission matrix that identifies which subjects access which resources at which privilege level.
  3. Evaluate each permission grant against the principle of least privilege -- flag any wildcard permissions (*), overly broad resource scopes, or administrative access granted to non-admin roles.
  4. Check for separation of duties violations where a single role combines mutually exclusive privileges (e.g., both "create user" and "approve user").
  5. Identify privilege escalation paths by tracing role inheritance chains, looking for roles that can modify their own permissions or assume higher-privileged roles.
  6. Inspect API route handlers and middleware for missing or inconsistent authorization checks -- compare route definitions against their corresponding auth guards.
  7. Verify that default-deny is enforced: confirm that unauthenticated or unauthorized requests are rejected unless explicitly allowed.
  8. Cross-reference findings against compliance requirements (NIST AC-1 through AC-25, GDPR Article 25, SOC 2 CC6.1) and flag gaps.
  9. Classify each finding by severity (critical, high, medium, low) based on exploitability and blast radius.
  10. Generate a remediation plan with specific configuration changes, code patches, or policy updates for each finding.

Output

  • Permission matrix: Role-to-resource mapping table showing all grants
  • Findings report: Each finding includes severity, affected resource, description, CWE reference (e.g., CWE-269 Improper Privilege Management, CWE-285 Improper Authorization), and remediation steps
  • Compliance gap analysis: Checklist of NIST SP 800-53 AC controls and GDPR access control requirements with pass/fail status
  • Privilege escalation paths: Diagram or list of role chains that enable escalation
  • Executive summary: Total findings by severity, top risks, and recommended priority actions
Show full SKILL.md (258 more words)Show less

Error Handling

ErrorCauseSolution
Permission denied reading config filesInsufficient filesystem accessRun with elevated permissions or request read access to the target directory
IAM CLI command not foundCloud CLI tools not installedInstall aws-cli, gcloud, or az and authenticate before running cloud audits
Empty role/permission scan resultsIncorrect glob patterns for the frameworkAdjust search patterns to match the target framework (e.g., @Roles() for NestJS, [Authorize] for .NET)
Timeout scanning large codebasesToo many files in scopeNarrow the scan scope with --exclude patterns for node_modules, vendor, or dist directories
Inconsistent policy formatMixed IAM policy versions or formatsNormalize policies to a single format before analysis; flag format inconsistencies in the report

Examples

Auditing a Node.js Express API

Scan route definitions in ${CLAUDE_SKILL_DIR}/src/routes/ for missing authorization middleware. Grep for router.post, router.put, router.delete and verify each has a corresponding authMiddleware or requireRole() call. Flag any state-changing endpoint lacking authorization as CWE-862 (Missing Authorization), severity high.

Reviewing AWS IAM Policies

Parse all JSON policy files in ${CLAUDE_SKILL_DIR}/infra/iam/. Flag policies containing "Effect": "Allow" with "Resource": "*" or "Action": "*" as CWE-269 (Improper Privilege Management), severity critical. Recommend scoping to specific ARNs and actions per the principle of least privilege.

RBAC Configuration Audit

Analyze role definitions in ${CLAUDE_SKILL_DIR}/config/roles.yaml. Build a permission matrix, identify roles with overlapping admin-level privileges, and flag any role that can both create and approve its own resources as a separation-of-duties violation (NIST AC-5), severity medium.

Resources

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (scripts, references, assets) in skills/.curated/auditing-access-control of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • assets/README.md
  • references/README.md
  • scripts/README.md
  • scripts/access_control_audit.py

Open the folder on GitHubat commit cfae287

Compare with similar skills

Auditing Access Control next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Auditing Access Control compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Auditing Access Control this skilljeremylongshore/tons-of-skills-marketplace2.8k—~1.5kAutomated safety check: PassMIT
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K8s Security PoliciesCybereason-Public/owLSM28012 repos~2kAutomated safety check: PassGPL-2.0
Payloadpayloadcms/payload45k5 repos~6.2kAutomated safety check: PassMIT
Convex Setup Authspokvulcan/poker-planning1148 repos~1.8kAutomated safety check: PassMIT
Cognitoitsmostafa/aws-agent-skills1.2k1 repos~2.3kAutomated safety check: PassMIT

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Categories

Questions about Auditing Access Control

What does Auditing Access Control do?

Audit access control implementations for security vulnerabilities and misconfigurations. Auditing Access Control is an agent skill from jeremylongshore/tons-of-skills-marketplace. Audit access control implementations for security vulnerabilities and misconfigurations.

When should I use Auditing Access Control?

Auditing Access Control fits situations like: reviewing authentication and authorization; with audit access control; check permissions; validate authorization.

How do I install Auditing Access Control in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill auditing-access-control -a claude-code`. Or copy the skill folder (skills/.curated/auditing-access-control in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/auditing-access-control in your project. Claude Code loads it when a task matches its description.

How do I install Auditing Access Control in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill auditing-access-control -a codex`. Or copy the skill folder (skills/.curated/auditing-access-control in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/auditing-access-control in your project. Codex loads it when a task matches its description.

Can I use Auditing Access Control in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill auditing-access-control -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/auditing-access-control, .gemini/skills/auditing-access-control, .github/skills/auditing-access-control and .opencode/skills/auditing-access-control in your project.

What does Auditing Access Control need to run?

Going by SKILL.md and its folder, Auditing Access Control needs Python for the scripts in its folder and the command-line tools its instructions call (aws and az). Our summary lists: Python 3; Node.js. Its frontmatter pre-approves these tools: Read, Write, Edit, Grep, Glob, Bash(security:*), Bash(scan:*), Bash(audit:*). Compatibility (from SKILL.md): Designed for Claude Code.

Does Auditing Access Control access the network?

SKILL.md names 3 domains. As links in the text: cwe.mitre.org, cheatsheetseries.owasp.org and csf.tools. This is read from the text; nothing was executed.

Is Auditing Access Control safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Auditing Access Control use?

Auditing Access Control is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Auditing Access Control use?

About 1.5k tokens (SKILL.md is roughly 6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 17 tokens, read only when the agent opens those files.

What are the alternatives to Auditing Access Control?

Skills that share tags, products or a category with Auditing Access Control: Configuring Horizon (coollabsio/coolify, 63k stars), K8s Security Policies (Cybereason-Public/owLSM, 280 stars), Payload (payloadcms/payload, 45k stars) and Convex Setup Auth (spokvulcan/poker-planning, 114 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Auditing Access Control?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.