security

security is a skill for Claude Code from vmkteam/claude-plugins. It costs 59 tokens per session (1,544 once invoked), scanned A, original, MIT.

A security checklist for Go services, covering input validation, secrets, login controls, and known vulnerable dependencies.

In plain words
What is it for?
Use it when editing authentication middleware, handling user input or external calls, or running the /go-review checklist.
Why use it?
It helps spot common security problems during development and code review, including unsafe database queries, leaked credentials, and risky dependencies.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the vmkteam-developer plugin — 35 skills shipped together

Good fit Use it when editing authentication middleware, handling user input or external calls, or running the /go-review checklist.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/vmkteam/claude-plugins/security
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.

Any agent
npx skills add vmkteam/claude-plugins --skill security
Clone the repo
git clone --depth 1 https://github.com/vmkteam/claude-plugins

Made for: Claude Code.

Or install vmkteam-developer, the plugin that ships this one along with the rest of its 35 skills.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/vmkteam/claude-plugins/security/github.svg)](https://agentmods.dev/skills/vmkteam/claude-plugins/security)
Your own site
<a href="https://agentmods.dev/skills/vmkteam/claude-plugins/security"><img src="https://agentmods.dev/badge/skills/vmkteam/claude-plugins/security/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

Your own site · 80×15
<a href="https://agentmods.dev/skills/vmkteam/claude-plugins/security"><img src="https://agentmods.dev/badge/skills/vmkteam/claude-plugins/security.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,544 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 $0.00059 $0.01544
Opus 5.5 $0.00024 $0.00618
Sonnet 5.5 $0.00012 $0.00309
Haiku 4.5 $0.00006 $0.00154

Measured 23d ago against content hash 4b51d365b48a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

security 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 23d 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.

plugins/developer/skills/security/SKILL.md · 147 lines

How it starts

The opening of the file, as written. The whole thing — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security — безопасность vmkteam Go-сервисов

Справочник по безопасности для vmkteam-стека: JSON-RPC API, go-pg, zenrpc, auth middleware. Используется автоматически при code review (/go-review) и разработке (/solve).

Инструменты

Инструмент Что ищет Команда
gosec SQL injection, hardcoded credentials, weak crypto, command injection gosec ./...
govulncheck Уязвимости в зависимостях (только реально используемые функции) govulncheck ./...
gitleaks API keys, tokens, passwords в коде и git-истории gitleaks detect --source .
trivy Уязвимости в Docker-образах CI only

SQL Injection

Главная точка риска — _repo_ext.go (кастомные запросы).

Плохо — пользовательский ввод в raw SQL:

// УЯЗВИМО: searchText попадает в SQL напрямую
func (r OrderRepo) SearchOrders(ctx context.Context, searchText string) ([]Order, error) {
    var orders []Order
    _, err := r.db.Query(&orders,
        "SELECT * FROM orders WHERE title LIKE '%"+searchText+"%'", nil)
    return orders, err
}

Хорошо — параметризованный запрос через go-pg:

func (r OrderRepo) SearchOrders(ctx context.Context, searchText string) ([]Order, error) {
    var orders []Order
    err := r.db.Model(&orders).
        Where("title ILIKE ?", "%"+searchText+"%").
        Select()
    return orders, err
}

Хорошо — если нужен raw SQL, использовать pg.SafeQuery:

q := r.db.Model(&orders)
q = q.Where("? ILIKE ?", pg.Ident("title"), "%"+searchText+"%")

Правило: go-pg ORM экранирует автоматически. Опасность только в Query() с конкатенацией строк.

Аутентификация и авторизация

Auth middleware (типичная ошибка — IDOR)

Middleware проверяет аутентификацию (есть ли валидный токен), но не авторизацию (может ли этот пользователь делать это действие).

Плохо — middleware пропустил, но метод не проверяет ownership:

func (s OrderService) GetByID(ctx context.Context, id int) (*Order, error) {
    // Любой авторизованный пользователь может получить любой заказ
    return s.repo.OrderByID(ctx, id)
}

Read the full file on GitHub · 147 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. 23d ago Changed · +1 lines 4b51d365b48a
  2. 1mo ago First seen · 146 lines · 59 tokens per session scan A 263e85a9cda7

Subscribe to this mod's changes

security is a skill published in the GitHub repository vmkteam/claude-plugins (7 stars, last pushed 6d ago), licensed MIT. It adds 59 tokens to every session and 1,544 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 2026-08-31.

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