Agent skill

Code Review Security

Security-focused code review mapped to OWASP Top 10 and ASVS.

CC-BY-4.0Auto-check passedDevelopment

Install Code Review Security

skills CLI

$ npx skills add OWASP/secure-agent-playbook --skill code-review-security -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install OWASP/secure-agent-playbook code-review-security --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/OWASP/secure-agent-playbook.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/code-security-skills/skills/code-review-security .claude/skills/code-review-security && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "code-review-security" agent skill from https://github.com/OWASP/secure-agent-playbook/tree/main/plugins/code-security-skills/skills/code-review-security into .claude/skills/code-review-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-security", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/OWASP/secure-agent-playbook/tree/main/plugins/code-security-skills/skills/code-review-security

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add OWASP/secure-agent-playbook --skill code-review-security -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install OWASP/secure-agent-playbook code-review-security --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/OWASP/secure-agent-playbook.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/code-security-skills/skills/code-review-security .agents/skills/code-review-security && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "code-review-security" agent skill from https://github.com/OWASP/secure-agent-playbook/tree/main/plugins/code-security-skills/skills/code-review-security into .agents/skills/code-review-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-security", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add OWASP/secure-agent-playbook --skill code-review-security -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install OWASP/secure-agent-playbook code-review-security --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/OWASP/secure-agent-playbook.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/code-security-skills/skills/code-review-security .cursor/skills/code-review-security && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "code-review-security" agent skill from https://github.com/OWASP/secure-agent-playbook/tree/main/plugins/code-security-skills/skills/code-review-security into .cursor/skills/code-review-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-security", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/OWASP/secure-agent-playbook.git --path plugins/code-security-skills/skills/code-review-security

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add OWASP/secure-agent-playbook --skill code-review-security -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install OWASP/secure-agent-playbook code-review-security --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/OWASP/secure-agent-playbook.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/code-security-skills/skills/code-review-security .gemini/skills/code-review-security && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "code-review-security" agent skill from https://github.com/OWASP/secure-agent-playbook/tree/main/plugins/code-security-skills/skills/code-review-security into .gemini/skills/code-review-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-security", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install OWASP/secure-agent-playbook code-review-security

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add OWASP/secure-agent-playbook --skill code-review-security -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/OWASP/secure-agent-playbook.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/code-security-skills/skills/code-review-security .github/skills/code-review-security && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "code-review-security" agent skill from https://github.com/OWASP/secure-agent-playbook/tree/main/plugins/code-security-skills/skills/code-review-security into .github/skills/code-review-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-security", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add OWASP/secure-agent-playbook --skill code-review-security -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install OWASP/secure-agent-playbook code-review-security --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/OWASP/secure-agent-playbook.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/code-security-skills/skills/code-review-security .opencode/skills/code-review-security && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "code-review-security" agent skill from https://github.com/OWASP/secure-agent-playbook/tree/main/plugins/code-security-skills/skills/code-review-security into .opencode/skills/code-review-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-security", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: code-review-security
GitHub stars: 186
Token cost: ~549 tokens
SKILL.md length: 209 words
Files: 1
Skills in repo: 14
Repo updated: Sep 25, 2026
First seen: Oct 7, 2026
Licence: CC-BY-4.0

At a glance

Security-focused code review mapped to OWASP Top 10 and ASVS.

Works in 5 steps: Scope & Context — Establish… → Systematic Review by Vulnerability Class… → Framework-Specific Checks — Apply checks… → …
Reviewing pull requests
SKILL.md covers Steps, Output and OWASP References
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Code Review Security is an agent skill from OWASP/secure-agent-playbook. Security-focused code review mapped to OWASP Top 10 and ASVS. Use when reviewing pull requests, auditing files or modules for vulnerabilities, or performing pre-merge security gate checks. Covers injection, auth, authorization, cryptography, data exposure, misconfiguration, and deserialization.

Its SKILL.md is about 550 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Web application vulnerabilities, Code review and Cryptography. The repository describes itself as: OWASP Secure Agent Playbook Project. The licence is CC-BY-4.0.

When your agent uses it

Reviewing pull requests
Modules for vulnerabilities
Performing pre-merge security gate checks

Example prompts

“/code-review-security”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

Scope & Context — Establish language/framework, trust boundary (server/client/library/CLI), data sensitivity (PII, credentials…
Systematic Review by Vulnerability Class (priority order)
Framework-Specific Checks — Apply checks for detected framework (React, Express, Django, Flask, Spring, Rails, Go).
Diff-Specific Analysis (for PRs) — Focus on changed lines plus context, verify security controls preserved, check new endpoints match auth…
Produce Findings — Cite file:line, show vulnerable snippet, explain attack scenario, provide fixed code, rate confidence.

What it can do on your machine

Read from SKILL.md and the folder at commit 1b5fd4c. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Code Review Security loads about 549 tokens when it runs. Until then it costs about 79 tokens; SKILL.md has 209 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~79
When it runs · the whole SKILL.md, loaded when a task matches: ~549

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from OWASP/secure-agent-playbook at commit 1b5fd4c, republished under its CC-BY-4.0 licence (© OWASP). 209 words, ~549 tokens.

Download SKILL.mdSave it as .claude/skills/code-review-security/SKILL.md (or your agent's skills folder).

name: code-review-security
description: Security-focused code review mapped to OWASP Top 10 and ASVS. Use when reviewing pull requests, auditing files or modules for vulnerabilities, or performing pre-merge security gate checks. Covers injection, auth, authorization, cryptography, data exposure, misconfiguration, and deserialization.
license: CC-BY-4.0

Security Code Review

Review code for security vulnerabilities by following the full procedure in plays/code-review-security.md.

Steps

Scope & Context — Establish language/framework, trust boundary (server/client/library/CLI), data sensitivity (PII, credentials, financial), and exposure (internet-facing, internal, local).
Systematic Review by Vulnerability Class (priority order):
- Injection (A03) — SQL, command, XSS, SSTI, LDAP, path traversal, header, log injection
- Authentication & Session (A07) — Hardcoded credentials, missing auth, weak sessions, JWT issues
- Authorization (A01) — Missing authz checks, IDOR, horizontal/vertical privilege escalation
- Cryptography (A02) — Weak algorithms, hardcoded keys, missing encryption, custom crypto
- Data Exposure (A01) — Sensitive data in errors/logs, credentials in code, debug mode
- Misconfiguration (A05) — Default credentials, permissive CORS, missing security headers
- Deserialization (A08) — Untrusted deserialization, missing integrity checks, CSRF gaps
Framework-Specific Checks — Apply checks for detected framework (React, Express, Django, Flask, Spring, Rails, Go).
Diff-Specific Analysis (for PRs) — Focus on changed lines plus context, verify security controls preserved, check new endpoints match auth patterns, look for removed security controls.
Produce Findings — Cite file:line, show vulnerable snippet, explain attack scenario, provide fixed code, rate confidence.

Output

Scope summary, findings sorted by severity using templates/finding.md, positive observations (good security controls in place), and severity count table.

OWASP References

OWASP Top 10 (2021): A01-A10
OWASP ASVS v5.0
OWASP Code Review Guide
OWASP Cheat Sheet Series

Files

Just SKILL.md in plugins/code-security-skills/skills/code-review-security of OWASP/secure-agent-playbook.

Open the folder on GitHubat commit 1b5fd4c

Compare with similar skills

Code Review Security next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Code Review Security compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Code Review Security this skillOWASP/secure-agent-playbook	186	—	~549	Automated safety check: Pass	CC-BY-4.0	12 days ago
Owasp Security Code ReviewSpecterOps/skills	702	—	~2.3k	Automated safety check: Pass	Apache-2.0	14 days ago
Code Reviewerforyourhealth111-pixel/Vibe-Skills	3.6k	—	~1.4k	Automated safety check: Notes	Apache-2.0	1 mo ago
Code ReviewerYikai-Liao/symusic	189	1 repos	~1.3k	Automated safety check: Pass	MIT	1 mo ago
Cwe Code ReviewSpecterOps/skills	702	—	~2.4k	Automated safety check: Pass	Apache-2.0	14 days ago
Code ReviewAzure/sap-automation	145	—	~7k	Automated safety check: Pass	MIT	today

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Questions about Code Review Security

What does Code Review Security do?

Security-focused code review mapped to OWASP Top 10 and ASVS. Code Review Security is an agent skill from OWASP/secure-agent-playbook. Security-focused code review mapped to OWASP Top 10 and ASVS.

When should I use Code Review Security?

Code Review Security fits situations like: reviewing pull requests; modules for vulnerabilities; performing pre-merge security gate checks.

How do I install Code Review Security in Claude Code?

Run `npx skills add OWASP/secure-agent-playbook --skill code-review-security -a claude-code`. Or copy the skill folder (plugins/code-security-skills/skills/code-review-security in OWASP/secure-agent-playbook) into .claude/skills/code-review-security in your project. Claude Code loads it when a task matches its description.

How do I install Code Review Security in Codex?

Run `npx skills add OWASP/secure-agent-playbook --skill code-review-security -a codex`. Or copy the skill folder (plugins/code-security-skills/skills/code-review-security in OWASP/secure-agent-playbook) into .agents/skills/code-review-security in your project. Codex loads it when a task matches its description.

Can I use Code Review Security in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add OWASP/secure-agent-playbook --skill code-review-security -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-review-security, .gemini/skills/code-review-security, .github/skills/code-review-security and .opencode/skills/code-review-security in your project.

What does Code Review Security need to run?

SKILL.md names no scripts, command-line tools or credentials: Code Review Security is instructions for the agent only.

Does Code Review Security access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Code Review Security safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Code Review Security use?

Code Review Security is published under the CC-BY-4.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Code Review Security use?

About 549 tokens (SKILL.md is roughly 2.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Code Review Security?

Skills that share tags, products or a category with Code Review Security: Owasp Security Code Review (SpecterOps/skills, 702 stars), Code Reviewer (foryourhealth111-pixel/Vibe-Skills, 3.6k stars), Code Reviewer (Yikai-Liao/symusic, 189 stars) and Cwe Code Review (SpecterOps/skills, 702 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Code Review Security?

OWASP (a GitHub organization) maintains it in OWASP/secure-agent-playbook, which has 186 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on September 25, 2026.

Source: OWASP/secure-agent-playbook on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Code Review Security

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Security Code Review

Steps

Output

OWASP References

Files

Compare with similar skills

Similar skills

More from OWASP/secure-agent-playbook

Related

Questions about Code Review Security