security-code-review

security-code-review is a skill for Claude Code, Codex from Ascend/agent-skills. It costs 170 tokens per session (5,319 once invoked), scanned A, original, MulanPSL-2.0.

A security-focused code review for Python, C++, Shell, and Markdown files. It checks for common vulnerabilities using guidance such as OWASP Top 10, CWE Top 25, and CERT secure-coding standards.

In plain words
What is it for?
Use it to review code for issues such as web vulnerabilities, unsafe coding patterns, token-validation problems, or deeply nested JSON attacks.
Why use it?
It helps find security weaknesses during code review and provides guidance for fixing them. It is intended for vulnerability checks, secure coding, and security compliance reviews.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to review code for issues such as web vulnerabilities, unsafe coding patterns, token-validation problems, or deeply nested JSON attacks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ascend/agent-skills/security-code-review
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 Ascend/agent-skills --skill security-code-review
Clone the repo
git clone --depth 1 https://github.com/Ascend/agent-skills

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-code-review

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/ascend/agent-skills/security-code-review"><img src="https://agentmods.dev/badge/skills/ascend/agent-skills/security-code-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 170 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,319 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 unknown 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 $0.00170 $0.05319
Opus 5 $0.00085 $0.02660
Sonnet 5 $0.00034 $0.01064
Haiku 4.5 $0.00017 $0.00532

Measured 7d ago against content hash 20a79b7d7160, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

security-code-review 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 7d 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.

Asks for rootlowPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

| 5 | 权限 | 未授权访问 | `chmod 777`, `chmod 666` |

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

skills/security-code-review/SKILL.md · 349 lines

The source is not reproduced here

Licensed MulanPSL-2.0

The repository is licensed MulanPSL-2.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 7d ago First seen · 349 lines · 170 tokens per session scan A 20a79b7d7160

Subscribe to this mod's changes

security-code-review is a skill published in the GitHub repository Ascend/agent-skills (40 stars, last pushed 4mo ago), licensed MulanPSL-2.0. It adds 170 tokens to every session and 5,319 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.