security-scan

security-scan is a skill for Claude Code, Codex from ArmisSecurity/armis-appsec-mcp. It costs 110 tokens per session (2,752 once invoked), scanned A, original, Apache-2.0.

An on-demand security scanner for code, files, and Git changes. It looks for software weaknesses and reports their security category, severity, location, and possible fixes.

In plain words
What is it for?
Scanning pasted code, individual files, staged changes, unstaged changes, or differences from another Git branch.
Why use it?
It helps find security problems and accidentally exposed secrets before changes are committed or reviewed.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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.

agentmods
npx agentmods add skills/armissecurity/armis-appsec-mcp/security-scan
Any agent
npx skills add ArmisSecurity/armis-appsec-mcp --skill security-scan
Clone the repo
git clone --depth 1 https://github.com/ArmisSecurity/armis-appsec-mcp

Made for: Claude Code, Codex.

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 security-scan

README.md
[![agentmods](https://agentmods.dev/badge/skills/armissecurity/armis-appsec-mcp/security-scan.svg)](https://agentmods.dev/skills/armissecurity/armis-appsec-mcp/security-scan)
Your own site
<a href="https://agentmods.dev/skills/armissecurity/armis-appsec-mcp/security-scan"><img src="https://agentmods.dev/badge/skills/armissecurity/armis-appsec-mcp/security-scan.svg" alt="Measured on agentmods" height="20"></a>
Per session 110 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,752 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00110 $0.02752
Opus 5 $0.00055 $0.01376
Sonnet 5 $0.00022 $0.00550
Haiku 4.5 $0.00011 $0.00275

Measured 6d ago against content hash f18d0d6ca860, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

security-scan 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 6d 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/security-scan/SKILL.md · 164 lines

How it starts

The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/security-scan

On-demand security scanning powered by AI SAST. Scans code snippets, files, or git diffs for vulnerabilities and reports findings with CWE IDs, severity, line numbers, and fix suggestions.

Usage

  • /security-scan -- scan staged changes (falls back to unstaged if nothing staged)
  • /security-scan path/to/file.py -- scan a specific file
  • /security-scan ref=main -- scan diff against a branch or ref
  • /security-scan full -- include all severities (not just HIGH/CRITICAL)
  • User pastes code inline and asks about security -- scan the pasted code

MCP Tools

The MCP server is named scanner. All tools are prefixed mcp__scanner__.

Tool When to Use
mcp__scanner__scan_diff Default. Scan git changes (staged, unstaged, or vs a ref)
mcp__scanner__scan_file User provides a file path to scan. Auto-scopes findings to lines changed vs HEAD when run inside a git repo (falls open on a clean file or non-repo path)
mcp__scanner__scan_code User pastes code inline or asks about a snippet

Tool Parameters

mcp__scanner__scan_diff

  • repo_path (string, optional): Path to git repo. Always set this to the absolute work-tree root of the repository you are working in — the value of git rev-parse --show-toplevel, not just your current working directory (which may be a subdirectory and would resolve the hash/scan-pass against the wrong root). The MCP server is a long-lived process whose own working directory may be a different checkout than yours — in a git worktree (e.g. a Conductor workspace) it is often the main repo, not your worktree. Passing repo_path pins the scan, the staged-diff hash, and the .scan-pass write to your repo so the commit gate sees them. Omitting it falls back to the server's working directory, which is wrong outside that one checkout.
  • ref (string, optional): Git ref to diff against (branch name, tag, SHA, HEAD~3). If empty, scans unstaged or staged changes.
  • staged (bool, optional): If true, scan only staged changes (git diff --cached). Ignored when ref is provided.

Read the full file on GitHub · 164 lines

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. 6d ago First seen · 164 lines · 110 tokens per session scan A f18d0d6ca860

Subscribe to this mod's changes

security-scan is a skill published in the GitHub repository ArmisSecurity/armis-appsec-mcp (6 stars, last pushed 24d ago), licensed Apache-2.0. It adds 110 tokens to every session and 2,752 once invoked, about $0.0006 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 2026-08-31.

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