grafel-security-audit

grafel-security-audit is a skill for Claude Code from cajasmota/grafel. It costs 72 tokens per session (1,953 once invoked), scanned A, original, MIT.

A two-stage security audit for a codebase indexed by grafel. The first stage checks structural patterns such as missing permission checks, exposed personal data, and unsafe data flows; the second uses an AI model to confirm and explain findings.

In plain words
What is it for?
Use it to look for missing authentication or permissions, publicly reachable routes, exposed personal information, unsafe source-to-sink data flows, and other indexed security findings.
Why use it?
It helps identify security weaknesses that simple code review may miss, then separates automatic checks from findings that need human review. The interactive process lets the user review results before they are recorded.

Skill for Claude Code

Written for Claude Code: when-to-use in frontmatter. Also seen: positional $N argument.

Good fit Use it to look for missing authentication or permissions, publicly reachable routes, exposed personal information, unsafe source-to-sink data flows, and other indexed security findings.

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Install with agentmods
npx agentmods add skills/cajasmota/grafel/grafel-security-audit
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 cajasmota/grafel --skill grafel-security-audit
Clone the repo
git clone --depth 1 https://github.com/cajasmota/grafel

Made for: Claude Code.

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 grafel-security-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/cajasmota/grafel/grafel-security-audit/github.svg)](https://agentmods.dev/skills/cajasmota/grafel/grafel-security-audit)
Your own site
<a href="https://agentmods.dev/skills/cajasmota/grafel/grafel-security-audit"><img src="https://agentmods.dev/badge/skills/cajasmota/grafel/grafel-security-audit/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 grafel-security-audit

Your own site · 80×15
<a href="https://agentmods.dev/skills/cajasmota/grafel/grafel-security-audit"><img src="https://agentmods.dev/badge/skills/cajasmota/grafel/grafel-security-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,953 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: 3 findings, 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 Rogue Agent · line 52
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
  • medium Agent Snooping · line 99
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 100
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 $0.00072 $0.01953
Opus 5 $0.00036 $0.00977
Sonnet 5 $0.00014 $0.00391
Haiku 4.5 $0.00007 $0.00195

Measured 10d ago against content hash 66b4947ce69b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

grafel-security-audit 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 10d 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.

skills/grafel-security-audit/SKILL.md · 108 lines

How it starts

The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.

grafel-security-audit

Run a two-phase security audit against the indexed grafel group.

  • Phase 1 — Static analysis (prompts/01-static-analysis.md): deterministic rule-based checks run against the graph. Finds missing auth decorators, publicly reachable endpoints with no permission check, orphan routes, exposed PII fields, and other structural patterns. Includes the Phase 2B taint-flow analysis (#2772) — grafel_security (kind=findings) returns source→sink paths through the CALLS graph that lack an intervening sanitizer, ranked by confidence (default floor 0.7). Essentially free — no LLM calls.
  • Phase 2 — LLM semantic pass (prompts/02-semantic-confirmation.md): LLM-driven confirmation, ranking, and explanation. Confirms or dismisses Phase 1 findings, adds severity scores, writes human-readable explanations, and surfaces findings the static pass missed. Interactive by default — the user reviews findings before they are submitted to the graph.

When to use this skill

  • "Audit security for this group."
  • "Find auth gaps / missing permission checks."
  • "Run a security check before the release."
  • /grafel-security-audit (slash command).

Do not invoke for code quality, documentation, or enrichment — those are separate skills.

Prerequisites

  • A running grafel daemon with the group indexed.
  • Recommended: run /grafel-resolve first — orphan endpoints (unresolved edges) produce false-negative auth coverage results.
  • Optional (improves Phase 2 fidelity): /grafel-tech-docs output — the LLM gets module README context so it understands what a handler is supposed to do before judging whether it has adequate auth.

CRITICAL TOOL DISCIPLINE

Use grafel MCP tools for ALL graph navigation: grafel_orient (view=me), grafel_find, grafel_inspect, grafel_subgraph, grafel_trace. Do NOT grep source for structural questions.

Pre-flight assertion

Call grafel_orient (view=me) first. If it errors: ABORT with "grafel MCP not configured. Run /mcp to fix."

Read the full file on GitHub · 108 lines

Files

What ships with it

2 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. 10d ago First seen · 108 lines · 72 tokens per session scan A 66b4947ce69b

Subscribe to this mod's changes

grafel-security-audit is a skill published in the GitHub repository cajasmota/grafel (15 stars, last pushed 2d ago), licensed MIT. It adds 72 tokens to every session and 1,953 once invoked, about $0.0004 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 2026-08-30.

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