security-review

security-review is a skill for Claude Code, Codex from Arnosdeus/agent-toolkit. It costs 31 tokens per session (263 once invoked), scanned A, original, MIT.

A security-review checklist for examining application changes across access control, input handling, APIs, dependencies, and data protection.

In plain words
What is it for?
It is for reviewing authentication, permissions, sessions, secrets, validation, output encoding, injection risks, uploads, cryptography, logging, headers, rate limits, and dependency issues.
Why use it?
It helps identify evidence-backed security weaknesses without treating unverified possibilities as confirmed vulnerabilities.

Skill for Claude CodeCodex

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/arnosdeus/agent-toolkit/security-review
Any agent
npx skills add Arnosdeus/agent-toolkit --skill security-review
Clone the repo
git clone --depth 1 https://github.com/Arnosdeus/agent-toolkit

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-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/arnosdeus/agent-toolkit/security-review.svg)](https://agentmods.dev/skills/arnosdeus/agent-toolkit/security-review)
Your own site
<a href="https://agentmods.dev/skills/arnosdeus/agent-toolkit/security-review"><img src="https://agentmods.dev/badge/skills/arnosdeus/agent-toolkit/security-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 263 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 $0.00031 $0.00263
Opus 5 $0.00015 $0.00131
Sonnet 5 $0.00006 $0.00053
Haiku 4.5 $0.00003 $0.00026

Measured 3d ago against content hash 21b19f93333d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security-review 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 3d 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-review/SKILL.md · 26 lines

What it actually says

Security Review

Procedure and output

Inspect trust boundaries, data flow, configuration, tests, and deployment assumptions before judging a finding. Report CRITICAL, HIGH, MEDIUM, LOW, or INFORMATIONAL findings as file:line — evidence — impact — fix. Mark unverified items as recommendations and never invent exploitability.

Inspect trust boundaries, data flow, configuration, tests, and deployment assumptions before judging a finding. Review authentication, authorization/RBAC, sessions, secrets, validation, output encoding, SSRF, CSRF, XSS, SQL/NoSQL and command injection, path traversal, unsafe deserialization, uploads, cryptography, logging, sensitive-data exposure, API security, headers, rate limits, privilege escalation, and dependency vulnerabilities.

Classify every result as confirmed vulnerability, likely vulnerability, hardening recommendation, or false positive. Include file/line evidence, impact, exploit preconditions, and a practical remediation. Do not infer a vulnerability without evidence; state what could not be verified.

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. 3d ago First seen · 26 lines · 31 tokens per session scan A 21b19f93333d

Subscribe to this mod's changes

security-review is a skill published in the GitHub repository Arnosdeus/agent-toolkit (2 stars, last pushed 10d ago), licensed MIT. It adds 31 tokens to every session and 263 once invoked, about $0.0002 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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