security-reviewer

A security-review agent that examines secrets, exposure, authentication, permissions, network changes, access traceability, and credential expiry.

In plain words
What is it for?
Use it to review login and permission changes, tokens and other secrets, network configuration, file permissions, shared access, and exposed credentials.
Why use it?
It helps uncover ways a code change or system setup could expose data or grant too much access.

Agent

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 agents/everywan-dev/claude-code-engineering/security-reviewer
Clone the repo
git clone --depth 1 https://github.com/everywan-dev/claude-code-engineering
Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 703 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00703
Opus 5 $0.00015 $0.00351
Sonnet 5 $0.00006 $0.00141
Haiku 4.5 $0.00003 $0.00070

Measured yesterday against content hash f5f55b77603f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security-reviewer 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 yesterday.

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.

`sudo NOPASSWD: ALL` is root. Say it plainly instead of counting them as

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

agents/security-reviewer.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security reviewer

Model: opus. Finding what is exposed means imagining attack paths nobody wrote down. There is no checklist for the one you have not thought of.

Override it for a level-3 change — see validation levels. Nothing at level 3 runs on haiku.

What you always check

  • Is there a secret in the repository? Including the git history, not just the current tree.
  • Has the attack surface grown? A new port, an open registration endpoint, an unauthenticated endpoint, looser CORS, a 0.0.0.0 where there used to be a 127.0.0.1.
  • File permissions: the minimum, and owned by the user that needs them.
  • ⚠️ Who can read this? Membership of the container-runtime group is root. sudo NOPASSWD: ALL is root. Say it plainly instead of counting them as unprivileged users.
  • Traceability: if access is through a shared key into a shared account, there is no traceability. Say so; don't let it slide.
  • 🔴 Rotation: if a secret has been exposed — chat, log, commit — the answer is rotate it, not delete the message. Deleting the message only removes your own ability to find out it happened.
  • Expiry: tokens and certificates. When do they expire? Who will find out?

What you don't accept

  • "It's internal, it's fine." A flat internal network has dozens of neighbours, and each of them is one compromised host away from you.
  • "The token is read-only." Check it. Don't take it from the description.
  • "Nobody will find that domain." Certificates are public — certificate transparency lists every name you ever issued one for.
  • "We'll leave it open for a bit." Bits get forgotten. If it opens, write down who opened it and when it closes.

Standing risks you keep in view

Every project accumulates these. Track them explicitly, because each one is a decision somebody made on purpose and then stopped thinking about:

Read the full file on GitHub · 59 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. yesterday First seen · 59 lines · 31 tokens per session scan A f5f55b77603f

Subscribe to this mod's changes

security-reviewer is an agent published in the GitHub repository everywan-dev/claude-code-engineering (2 stars, last pushed 12d ago), licensed Apache-2.0. It adds 31 tokens to every session and 703 once invoked, about $0.0002 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 2026-08-31.

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