A repository security-audit workflow that scans code, dependencies, configuration, and stored credentials for security problems. SAST means checking source code for weaknesses, while SCA means checking third-party packages.

Use it for full-project security reviews covering source code, dependencies, secrets, and configuration.

It brings several security checks together and can divide the work among additional agents for larger repositories.

cyberconan — Skill for Claude Code by Kasempiternal

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 Kasempiternal/Claude-Agent-System --skill cyberconan

Clone the repo

git clone --depth 1 https://github.com/Kasempiternal/Claude-Agent-System

Made for: Claude Code.

Or install cas, the plugin that ships this one along with the rest of its 19 skills, 3 hooks, 2 MCP servers.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/kasempiternal/claude-agent-system/cyberconan/github.svg)](https://agentmods.dev/skills/kasempiternal/claude-agent-system/cyberconan)

Your own site

<a href="https://agentmods.dev/skills/kasempiternal/claude-agent-system/cyberconan"><img src="https://agentmods.dev/badge/skills/kasempiternal/claude-agent-system/cyberconan/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/kasempiternal/claude-agent-system/cyberconan"><img src="https://agentmods.dev/badge/skills/kasempiternal/claude-agent-system/cyberconan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 8,055 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00044	$0.08055
Opus 5	$0.00022	$0.04027
Sonnet 5	$0.00009	$0.01611
Haiku 4.5	$0.00004	$0.00805

Measured 9d ago against content hash 294b33d34c3b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

cyberconan scanned grade A with 1 finding 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 9d 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.

Reads agent configuration directorieslowAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

Read ~/.claude/settings.json

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

claude-agent-system-plugin/skills/cyberconan/SKILL.md · 713 lines

How it starts

The opening of the file, as written. The whole thing — 713 lines — stays where its author put it; the contents beside it link to each section on GitHub.

 ██████╗██╗   ██╗██████╗ ███████╗██████╗
██╔════╝╚██╗ ██╔╝██╔══██╗██╔════╝██╔══██╗
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██║       ╚██╔╝  ██╔══██╗██╔══╝  ██╔══██╗
╚██████╗   ██║   ██████╔╝███████╗██║  ██║
 ╚═════╝   ╚═╝   ╚═════╝ ╚══════╝╚═╝  ╚═╝
 ██████╗ ██████╗ ███╗   ██╗ █████╗ ███╗   ██╗
██╔════╝██╔═══██╗████╗  ██║██╔══██╗████╗  ██║
██║     ██║   ██║██╔██╗ ██║███████║██╔██╗ ██║
██║     ██║   ██║██║╚██╗██║██╔══██║██║╚██╗██║
╚██████╗╚██████╔╝██║ ╚████║██║  ██║██║ ╚████║
 ╚═════╝ ╚═════╝ ╚═╝  ╚═══╝╚═╝  ╚═╝╚═╝  ╚═══╝

        ⚔ Security Audit Swarm ⚔
          CLAUDE AGENT SYSTEM

MANDATORY: Output the banner above verbatim as your very first message to the user, before any tool calls or other output.

You are entering CYBERCONAN ORCHESTRATOR MODE. Your role is to detect the project's security surface, load scanner criteria, spawn parallel scanner agents, verify all findings, compile a security report, and optionally coordinate remediation agents.

Your Role: Security Audit Orchestrator

You DETECT the repo structure, languages, frameworks, and project types
You LOAD scanner criteria and templates from the plugin directory
You SPAWN parallel scanner agents via Task tool (LITE mode) or Agent Teams (FULL mode)
You VERIFY all findings through independent verification agents
You COMPILE a scored security report
You OFFER optional remediation of confirmed vulnerabilities
You NEVER analyze code for security issues yourself

You are an orchestrator. You delegate ALL scanning work to agents via the Task tool. You NEVER review code yourself.

Architecture: Two Modes

CyberConan adapts its orchestration based on repository size and complexity.

LITE Mode (Task subagents, like /review)

When: < 50 source files AND single project
How: 4 parallel Task tool calls (one per scan type), single verifier Task, orchestrator compiles report
No Teams required — works for everyone
~6 agents total: recon (inline) + 4 scanners + 1 verifier

Read the full file on GitHub · 713 lines

Files

What ships with it

16 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.

9d ago First seen · 713 lines · 44 tokens per session scan A 294b33d34c3b

Subscribe to this mod's changes

cyberconan is a skill published in the GitHub repository Kasempiternal/Claude-Agent-System (15 stars, last pushed 1mo ago), licensed MIT. It adds 44 tokens to every session and 8,055 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Claude Code Code review Security ai-agents automation claude claude-code-plugin

cyberconan

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Reads agent configuration directorieslowAgent snooping

How it starts

Your Role: Security Audit Orchestrator

Architecture: Two Modes

LITE Mode (Task subagents, like /review)

What ships with it

What this file has done since we first saw it

Other skills, from other repositories

audit

review

pr-review

phx-pr-review

boundaries

challenge