moai-adk: Skill for Claude Code

.claude/skills/moai-ref-owasp-checklist/SKILL.md

moai-ref-owasp-checklist is a skill for Claude Code from modu-ai/moai-adk. It costs 66 tokens per session (1,997 once invoked), scanned A, original, Apache-2.0.

A reference checklist for securing backend web APIs, including login, permissions, input handling, and HTTP response settings.

In plain words
What is it for?
Use it while building backend APIs or carrying out a security review. It is not intended for frontend design, deployment, performance work, or testing.
Why use it?
It helps developers check common API security weaknesses systematically instead of relying on memory. It also gives defensive patterns for problems such as unauthorized access to another user's data or unlimited requests.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

This is modu-ai/moai-adk's own configuration. It tells Claude Code how to work on moai-adk itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything moai-adk configures →

About the project

MoAI-ADK is a Go-based harness that organizes and verifies Claude Code work across planning, implementation, synchronization, and review stages. Developers use it to structure agentic coding tasks, apply quality gates, and route work across language models, while the catalogue entries extend its workflow with skills, hooks, commands, MCP servers, instructions, and settings.

modu-ai/moai-adk · 1,206 stars · on GitHub · adk.mo.ai.kr

Reuse

Borrowing it

Nothing to install: this file belongs to modu-ai/moai-adk. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/modu-ai/moai-adk/main/.claude/skills/moai-ref-owasp-checklist/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/modu-ai/moai-adk

Made for: Claude Code.

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 moai-ref-owasp-checklist

README.md
[![agentmods](https://agentmods.dev/badge/skills/modu-ai/moai-adk/moai-ref-owasp-checklist/github.svg)](https://agentmods.dev/skills/modu-ai/moai-adk/moai-ref-owasp-checklist)
Your own site
<a href="https://agentmods.dev/skills/modu-ai/moai-adk/moai-ref-owasp-checklist"><img src="https://agentmods.dev/badge/skills/modu-ai/moai-adk/moai-ref-owasp-checklist/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 moai-ref-owasp-checklist

Your own site · 80×15
<a href="https://agentmods.dev/skills/modu-ai/moai-adk/moai-ref-owasp-checklist"><img src="https://agentmods.dev/badge/skills/modu-ai/moai-adk/moai-ref-owasp-checklist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,997 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 63
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
How audits are shown
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 $0.00066 $0.01997
Opus 5 $0.00033 $0.00999
Sonnet 5 $0.00013 $0.00399
Haiku 4.5 $0.00007 $0.00200

Measured 11d ago against content hash 10c49591d140, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

moai-ref-owasp-checklist 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 11d 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.

.claude/skills/moai-ref-owasp-checklist/SKILL.md · 163 lines

How it starts

The opening of the file, as written. The whole thing — 163 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OWASP Security Checklist Reference

Target Agents

  • manager-develop - Applies checklist during backend API implementation (cycle_type=tdd or cycle_type=ddd context)
  • /moai review --security - Primary security-audit invocation surface (replaces the retired /moai security subcommand per SPEC-SUBCOMMAND-RETIRE-001); equivalently available as a per-spawn Agent(general-purpose) security specialist per archived-agent-rejection.md §C

OWASP API Security Top 10

Rank Vulnerability Check Defense
A1 BOLA (Broken Object Level Authorization) Can user A access user B's resources? Verify object ownership at every endpoint
A2 Broken Authentication Weak passwords, unlimited login attempts? bcrypt (cost 12+), rate limit, MFA
A3 Broken Object Property Level Authorization Are hidden fields exposed in responses? Response DTOs, field-level filtering
A4 Unrestricted Resource Consumption Can mass requests crash the server? Rate limiting, enforce pagination limits
A5 Broken Function Level Authorization Can regular users call admin APIs? RBAC middleware, permission checks
A6 SSRF (Server-Side Request Forgery) Can URL input access internal resources? URL whitelist, block internal IPs
A7 Security Misconfiguration Debug mode, default accounts exposed? Separate prod config, inspect headers
A8 Lack of Automated Threat Protection Can APIs be called in abnormal sequences? State machine validation, business rules
A9 Improper Asset Management Unused APIs, old versions exposed? API inventory, version deprecation
A10 Unsafe API Consumption Are external API responses trusted blindly? Validate external responses, set timeouts

Authentication Checklist

Password Policy

  • Minimum 8 characters, show strength meter (not strict rules)
  • bcrypt (cost factor 12+) or Argon2id
  • Temporary lock after 5 failed attempts (15 min) or CAPTCHA
  • Prevent reuse of last 5 passwords

Read the full file on GitHub · 163 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. 11d ago First seen · 163 lines · 66 tokens per session scan A 10c49591d140

Subscribe to this mod's changes

moai-ref-owasp-checklist is a skill published in the GitHub repository modu-ai/moai-adk (1,206 stars, last pushed today), licensed Apache-2.0. It adds 66 tokens to every session and 1,997 once invoked, about $0.0003 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 2026-08-30.

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