l5-red-team-auditor

l5-red-team-auditor is a skill for Claude Code from richfrem/agent-plugins-skills. It costs 62 tokens per session (1,166 once invoked), scanned A, original, MIT.

A strict security and architecture review for agent plugins. It checks a plugin against a 39-point maturity framework for design gaps, bypass risks, inconsistent behavior, and rule violations.

In plain words
What is it for?
Use it for enterprise-style red-team reviews, security audits, structural compliance checks, and maturity assessments of plugins or skills.
Why use it?
It helps expose weaknesses that could cause a plugin to fail in production or behave differently from its intended design.

Skill for Claude Code

Written for Claude Code: context: fork in frontmatter. Also seen: model in frontmatter.

Part of the agent-scaffolders plugin — 33 skills shipped together

Good fit Use it for enterprise-style red-team reviews, security audits, structural compliance checks, and maturity assessments of plugins or skills.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/richfrem/agent-plugins-skills/l5-red-team-auditor
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add richfrem/agent-plugins-skills --skill l5-red-team-auditor
Clone the repo
git clone --depth 1 https://github.com/richfrem/agent-plugins-skills

Made for: Claude Code.

Or install agent-scaffolders, the plugin that ships this one along with the rest of its 33 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for l5-red-team-auditor

README.md
[![agentmods](https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/l5-red-team-auditor/github.svg)](https://agentmods.dev/skills/richfrem/agent-plugins-skills/l5-red-team-auditor)
Your own site
<a href="https://agentmods.dev/skills/richfrem/agent-plugins-skills/l5-red-team-auditor"><img src="https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/l5-red-team-auditor/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for l5-red-team-auditor

Your own site · 80×15
<a href="https://agentmods.dev/skills/richfrem/agent-plugins-skills/l5-red-team-auditor"><img src="https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/l5-red-team-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,166 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 59
    Code scans file system directories looking for sensitive files. This could be reconnaissance for credential theft.
    Fix: Remove unnecessary filesystem scanning. If file access is needed, use explicit, scoped paths. Avoid reading ~/.ssh, ~/.aws, or credential directories.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00062 $0.01166
Opus 5 $0.00031 $0.00583
Sonnet 5 $0.00012 $0.00233
Haiku 4.5 $0.00006 $0.00117

Measured 4d ago against content hash 4723c2c27515, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

l5-red-team-auditor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/agent-scaffolders/skills/l5-red-team-auditor/SKILL.md · 101 lines

How it starts

The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dependencies

This skill requires Python 3.8+ and standard library only. No external packages needed.

To install this skill's dependencies:

pip-compile ./requirements.in
pip install -r ./requirements.txt

See ./requirements.txt for the dependency lockfile (currently empty — standard library only).


You are acting as an aggressive Enterprise Red Team Security & Architecture Auditor, assessing agent plugins.

Objective: Perform an uncompromising L5 Enterprise Red Team Audit against the 39-point architecture matrix.

Your mission: Find L5 maturity gaps, bypass vectors, determinism failures, Negative Constraint violations, and architectural drift. Do not soften findings. Every gap is a potential production failure.

Context Required

Before analyzing the target plugin, you MUST understand these foundational principles:

  1. plugins reference/agent-scaffolders/skills/analyze-plugin/references/maturity-model.md
  2. plugins reference/agent-scaffolders/skills/analyze-plugin/references/security-checks.md
  3. plugins reference/agent-scaffolders/references/pattern-decision-matrix.md (CRITICAL: Read the 39 architectural constraints)
  4. Architectural Standards (CRITICAL: Evaluate against these universal principles):
    • Self-Contained Isolation: Each plugin is fully portable. Zero runtime dependencies on sibling plugins or repo-specific paths.
    • Hub-and-Spoke Scripts: Shared scripts live at plugin root; skills use symlinks, never duplicate files.
    • File-Level Symlinks Only: No directory-level symlinks; installers resolve to hard copies.
    • Loose Coupling: Cross-plugin work flows through natural-language agent skill delegation, never hardcoded imports.
    • Portable Frontmatter: name matches directory slug; description is third-person active; evals use should_trigger: bool.

Escalation Trigger Taxonomy

If any of the following conditions are met, STOP immediately and flag before proceeding:

  • shell=True detected in any script → CRITICAL: Command Injection Vector
  • Hardcoded credentials or tokens detected → CRITICAL: Credential Exposure
  • author in plugin.json is a string or invalid object → CRITICAL: Marketplace Schema Rejection
  • Duplicate top-level keys in plugin.jsonCRITICAL: Manifest Parsing Collision
  • SKILL.md exceeds 500 lines → HIGH: Progressive Disclosure Violation
  • name field in frontmatter has spaces or uppercase → HIGH: Naming Standard Violation
  • No evals/evals.json present → MEDIUM: Missing Benchmarking Loop
  • No references/fallback-tree.md present → MEDIUM: Missing Fallback Procedures

Read the full file on GitHub · 101 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago Changed · +5 lines 4723c2c27515
  2. 8d ago First seen · 96 lines · 62 tokens per session scan A 2cf8a49ea5c9

Subscribe to this mod's changes

l5-red-team-auditor is a skill published in the GitHub repository richfrem/agent-plugins-skills (6 stars, last pushed today), licensed MIT. It adds 62 tokens to every session and 1,166 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.