security-reviewer

An adversarial security review based on the OWASP Top 10, a widely used list of common web-application security risks. It examines security-sensitive code changes for problems involving authentication, payments, user data, API endpoints, and file uploads.

In plain words
What is it for?
Use it to review changes that handle logins, payments, personal data, web APIs, or uploaded files.
Why use it?
It helps find security weaknesses before they reach users or production systems.

Agent

Part of the futuregerald-claude-plugin plugin — 48 skills, 10 agents shipped together

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/futuregerald/futuregerald-claude-plugin/security-reviewer
Clone the repo
git clone --depth 1 https://github.com/futuregerald/futuregerald-claude-plugin

Or install futuregerald-claude-plugin, the plugin that ships this one along with the rest of its 48 skills, 10 agents.

Per session 40 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,717 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
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 $0.00040 $0.01717
Opus 5 $0.00020 $0.00859
Sonnet 5 $0.00008 $0.00343
Haiku 4.5 $0.00004 $0.00172

Measured 2d ago against content hash 6d206d38d166, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

security-reviewer scanned grade B 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 2d 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.

Cloud metadata endpointmediumServer-side request forgery

One request to 169.254.169.254 can return temporary IAM credentials.

(AWS `169.254.169.254`, GCP metadata server)?

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 · 159 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 159 lines · 40 tokens per session scan B 6d206d38d166

Subscribe to this mod's changes

security-reviewer is an agent published in the GitHub repository futuregerald/futuregerald-claude-plugin (5 stars, last pushed 5d ago), with no licence file. It adds 40 tokens to every session and 1,717 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (cloud metadata endpoint). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.