security-review

security-review is a skill for Claude Code, Codex from sgaabdu4/building-flutter-apps. It costs 46 tokens per session (534 once invoked), scanned A, original, MIT.

A security review skill for examining authorized application code, settings, designs, and other technical artifacts. It looks for problems such as broken access checks, exposed data, unsafe input handling, leaked secrets, risky dependencies, and unsafe agent tools.

In plain words
What is it for?
It helps review login and session behavior, permissions, tenant and object access, input and file handling, secrets, dependencies, and AI or tool trust boundaries.
Why use it?
It provides a structured way to find security weaknesses across the paths that handle sensitive data and permissions. It also distinguishes confirmed evidence from assumptions or missing evidence.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present. Also seen: installed under .agents/ (shared by several agents).

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is click R "../code-review/references/review.md".

Part of the building-flutter-apps plugin — 14 skills, 5 hooks shipped together

Good fit It helps review login and session behavior, permissions, tenant and object access, input and file handling, secrets, dependencies, and AI or tool trust boundaries.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/sgaabdu4/building-flutter-apps
agentmods
npx agentmods add skills/sgaabdu4/building-flutter-apps/security-review

Made for: Claude Code, Codex.

Or install building-flutter-apps, the plugin that ships this one along with the rest of its 14 skills, 5 hooks.

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/sgaabdu4/building-flutter-apps/security-review/github.svg)](https://agentmods.dev/skills/sgaabdu4/building-flutter-apps/security-review)
Your own site
<a href="https://agentmods.dev/skills/sgaabdu4/building-flutter-apps/security-review"><img src="https://agentmods.dev/badge/skills/sgaabdu4/building-flutter-apps/security-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-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/sgaabdu4/building-flutter-apps/security-review"><img src="https://agentmods.dev/badge/skills/sgaabdu4/building-flutter-apps/security-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 534 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00046 $0.00534
Opus 5.5 $0.00018 $0.00214
Sonnet 5.5 $0.00009 $0.00107
Haiku 4.5 $0.00005 $0.00053

Measured 18d ago against content hash f9d62367226f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 18d 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.

.agents/skills/security-review/SKILL.md · 33 lines

What it actually says

Security Review

Load the review method; use Research when dependency/advisory claims need current evidence. Reuse existing fix/testing authority; review alone adds no remediation or live-exploitation authority.

flowchart LR
  R[Code Review method] -->|Current dependency / advisory evidence| D[Research]
  click R "../code-review/references/review.md"
  click D "../research/SKILL.md"
  • Trace = sensitive asset + caller/input + required permission → actual enforcing owner → operation/data. UI visibility or a caller's check does not prove server authorization.
  • Coverage = focused change → affected path + adjacent callers; broad review → actual entry points + assets, then relevant surfaces below. Mark material missing evidence.
Surface Resolve
Identity / sessions Caller-selected identity, role or tenant; login, recovery, expiry + revocation boundaries.
Data / privilege Actor + tenant enforcement for object, field, list/export + mutation; alternate entry points.
Input / files Query, markup, URL, path, upload/archive → normalization + downstream parser, fetch, storage or execution.
Secrets / artifacts Source, logs, client bundle, generated config + packaged output exposure; inspect the actual in-scope artifact. Internal address alone ≠ secret.
LLM / tools Untrusted content influencing privileged actions; permissions + validated arguments outside the model; required approval at the action boundary.
Dependencies Resolved lockfile/image/SBOM/runtime version + existing scan + primary advisory ranges. Trace production/build/dev/transitive use; manifest range ≠ resolved version. Confirmed vulnerable version ≠ proven exploitability; unknown reachability never waives a required gate.
  • Finding = entry point + actor/input preconditions + enforcing/missing control + affected asset + realistic impact. Test competing explanations through source + permitted probes; unproven exploit path stays unknown.
  • Secret evidence = type + location + exposure path; mask values. Keep findings, optional hardening + unresolved questions distinct.
  • Authorized fix = smallest control satisfying the requirement; verify original unauthorized path denied + legitimate access preserved at the actual permission/input boundary. Run applicable gates.
  • Result = assessed surfaces + findings + gaps. Scanner success proves only its checked scope; no whole-application certification or implied runtime proof.
Files

What ships with it

1 file 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. 18d ago First seen · 33 lines · 46 tokens per session scan A f9d62367226f

Subscribe to this mod's changes

security-review is a skill published in the GitHub repository sgaabdu4/building-flutter-apps (25 stars, last pushed yesterday), licensed MIT. It adds 46 tokens to every session and 534 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-29.