Agent skill

Moai Ref Owasp Checklist

by modu-ai in modu-ai/moai-adk

OWASP Top 10 security checklist, authentication patterns, input validation, and HTTP security headers reference.

Apache-2.0Auto-check passedSecurity

Install Moai Ref Owasp Checklist

skills CLI
$ npx skills add modu-ai/moai-adk --skill moai-ref-owasp-checklist -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install modu-ai/moai-adk moai-ref-owasp-checklist --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/modu-ai/moai-adk.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/moai-ref-owasp-checklist .claude/skills/moai-ref-owasp-checklist && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
moai-ref-owasp-checklist
GitHub stars
1.2k
Token cost
~2.3k tokens
SKILL.md length
904 words
Files
1
Skills in repo
48
Repo updated
First seen
Licence
Apache-2.0

At a glance

OWASP Top 10 security checklist, authentication patterns, input validation, and HTTP security headers reference.

  • Tasks that involve Web application vulnerabilities
  • SKILL.md covers Target Agents, OWASP API Security Top 10, Authentication Checklist and HTTP Security Headers, plus 7 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Tasks that involve Security review

What it does

Moai Ref Owasp Checklist is an agent skill from modu-ai/moai-adk. OWASP Top 10 security checklist, authentication patterns, input validation, and HTTP security headers reference. Agent-extending skill that amplifies backend-implementation and security-audit workflows with production-grade security patterns. NOT for: frontend UI, DevOps deployment, performance optimization, testing strategy.

Its SKILL.md is about 2.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Security, covering Web application vulnerabilities, Security review and Secure coding. The repository describes itself as: Agentic development harness for Claude Code — SPEC-driven plan/run/sync, TRUST 5 quality gates, model+effort routing, and Claude×GLM multi-LLM cost control. Single Go binary, 16… The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Web application vulnerabilities
  • Tasks that involve Security review
  • Tasks that involve Secure coding

Example prompts

  • “/moai-ref-owasp-checklist”

What it can do on your machine

Read from SKILL.md and the folder at commit 2aab5f7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Moai Ref Owasp Checklist loads about 2.3k tokens when it runs. Until then it costs about 88 tokens; SKILL.md has 904 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~88
When it runs · the whole SKILL.md, loaded when a task matches
~2.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from modu-ai/moai-adk at commit 2aab5f7, republished under its Apache-2.0 licence (© modu-ai). 904 words, ~2,280 tokens.

Download SKILL.mdSave it as .claude/skills/moai-ref-owasp-checklist/SKILL.md (or your agent's skills folder).
name
moai-ref-owasp-checklist
description
OWASP Top 10 security checklist, authentication patterns, input validation, and HTTP security headers reference. Agent-extending skill that amplifies backend-implementation and security-audit workflows with production-grade security patterns. NOT for: frontend UI, DevOps deployment, performance optimization, testing strategy.
when_to_use
Use for security reference: OWASP Top 10 vulnerabilities (injection, XSS, CSRF), authentication patterns, input validation, and HTTP security headers…
user-invocable
false
metadata.version
1.0.0
metadata.category
domain
metadata.status
active
metadata.updated
2026-03-30
metadata.tags
owasp, security, checklist, authentication, validation, reference
progressive_disclosure.enabled
true
progressive_disclosure.level1_tokens
100
progressive_disclosure.level2_tokens
3000

OWASP Security Checklist Reference

Target Agents

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

OWASP API Security Top 10

RankVulnerabilityCheckDefense
A1BOLA (Broken Object Level Authorization)Can user A access user B's resources?Verify object ownership at every endpoint
A2Broken AuthenticationWeak passwords, unlimited login attempts?bcrypt (cost 12+), rate limit, MFA
A3Broken Object Property Level AuthorizationAre hidden fields exposed in responses?Response DTOs, field-level filtering
A4Unrestricted Resource ConsumptionCan mass requests crash the server?Rate limiting, enforce pagination limits
A5Broken Function Level AuthorizationCan regular users call admin APIs?RBAC middleware, permission checks
A6Unrestricted Access to Sensitive Business FlowsCan a sensitive flow be automated or abused in bulk?Flow-level rate limits, anomaly detection, challenge on abuse signals
A7SSRF (Server-Side Request Forgery)Can URL input reach internal or metadata endpoints?Egress allowlist, block internal/metadata ranges, validate fetch targets
A8Security MisconfigurationDebug mode, verbose errors, or default accounts exposed?Production-hardened config, security headers, inspect deployed config
A9Improper Inventory ManagementUndocumented, shadow, or old-version endpoints reachable?Maintain an API inventory; deprecate and decommission old versions
A10Unsafe Consumption of APIsAre external/third-party API responses trusted blindly?Validate external responses against a schema, set timeouts, treat upstream data as untrusted

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
JWT Configuration
SettingRecommended Value
Access Token Expiry15-30 minutes
Refresh Token Expiry7-14 days
AlgorithmRS256 (asymmetric) or HS256
StoragehttpOnly + secure + sameSite cookie
PayloadMinimal: userId, role only (no PII)
RenewalSilent refresh or token rotation
Session Security
  • Regenerate session ID after login
  • Invalidate session on logout (server-side)
  • Set session timeout (30 min idle)
  • Bind session to IP/User-Agent (optional, strict)

HTTP Security Headers

HeaderValuePurpose
Strict-Transport-Securitymax-age=31536000; includeSubDomainsForce HTTPS
X-Content-Type-OptionsnosniffPrevent MIME sniffing
X-Frame-OptionsDENY or SAMEORIGINPrevent clickjacking
Content-Security-Policydefault-src 'self'Prevent XSS
Referrer-Policystrict-origin-when-cross-originLimit referrer
Permissions-Policycamera=(), microphone=()Restrict browser features

Input Validation Checklist

TypeMethodTool
Schema validationType + structure checkZod, Joi, pydantic, Go validator
Length limitsMin/max constraintsSchema definitions
SQL InjectionParameterized queriesORM (Prisma, GORM, SQLAlchemy)
XSS PreventionHTML escapingDOMPurify (client), server escape
Path TraversalPath normalizationfilepath.Clean + whitelist
File UploadType + size validationMIME type + magic number check
CORSOrigin whitelistNever origin: '*' with credentials

Sensitive Data Handling

Data TypeStorageTransmissionLogging
Passwordsbcrypt hash onlyHTTPS onlyNEVER
API KeysEnvironment variablesHeader (Authorization)Masked (first 4 chars)
PIIEncrypted (AES-256)HTTPS onlyMasked
Credit CardsTokenized (payment provider)Provider SDKNEVER
SessionshttpOnly cookieHTTPS onlyNEVER

Security Review Severity Levels

LevelLabelActionExample
P0CRITICALBlock releaseSQL injection, auth bypass
P1HIGHFix before mergeMissing authorization check
P2MEDIUMFix within sprintWeak password policy
P3LOWTrack in backlogMissing security header
Show full SKILL.md (399 more words)Show less

Trust Boundary Verification Principles

PrincipleApplies ToDefense
Cached/client-supplied session state is not proof of current identityAny framework caching or locally decoding a session/JWT valueRe-verify identity against the server-side source of truth (session store, token introspection, identity provider) before every authorization decision
Edge/gateway/middleware auth checks are a UX convenience, not a security boundaryReverse proxies, framework middleware, API gateways, serverless edge functionsEvery mutation-handling endpoint independently re-checks authentication AND resource-ownership authorization
Scheduled/cron-triggered HTTP endpoints are still public URLsAny scheduler that invokes an HTTP endpoint (cron jobs, scheduled serverless functions, container-orchestrator scheduled jobs)Require a shared-secret bearer check (constant-time compare) on every scheduled-endpoint invocation
Production builds must not expose source maps or equivalent debug artifactsAny bundler/build toolDisable production source maps, verbose stack traces, and build manifests in production configuration
Webhook receivers must verify a signature/HMAC header before trusting the payloadAny webhook providerVerify signature/HMAC against a shared secret before treating the payload as legitimate business data
<!-- moai:evolvable-start id="rationalizations" -->

Common Rationalizations

RationalizationReality
"This is an internal application, OWASP does not apply"Internal applications are reachable from compromised internal services. OWASP applies to all web applications.
"The framework handles XSS protection"Frameworks protect default rendering paths. Dynamic HTML insertion, innerHTML, and template literals bypass the protection.
"We do not store sensitive data, so encryption is unnecessary"Session tokens, API keys, and PII are sensitive data. If the application has users, it has sensitive data.
"Security headers are just defense-in-depth, not critical"Each security header blocks a specific attack class. Missing CSP enables XSS even when output is escaped.
"I will do a security review before release"Late security reviews find issues that are expensive to fix. Secure coding practices prevent them from the start.
<!-- moai:evolvable-end -->
<!-- moai:evolvable-start id="red-flags" -->

Red Flags

  • User input rendered in HTML without escaping or sanitization
  • SQL query built with string concatenation instead of parameterized queries
  • Authentication token stored in localStorage instead of httpOnly cookie
  • Missing Content-Security-Policy header on response
  • Secrets (API keys, passwords) found in source code or configuration files committed to git
<!-- moai:evolvable-end -->
<!-- moai:evolvable-start id="verification" -->

Verification

  • OWASP Top 10 checklist reviewed for the change (show which items were evaluated)
  • User input sanitized before rendering in HTML output
  • All database queries use parameterized statements
  • Security headers present (CSP, X-Frame-Options, X-Content-Type-Options)
  • No secrets found in source code (show grep results for common secret patterns)
  • Authentication tokens use httpOnly, Secure, SameSite cookie attributes
<!-- moai:evolvable-end -->

© modu-ai, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .claude/skills/moai-ref-owasp-checklist of modu-ai/moai-adk.

Open the folder on GitHubat commit 2aab5f7

Compare with similar skills

Moai Ref Owasp Checklist next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Moai Ref Owasp Checklist compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Moai Ref Owasp Checklist this skillmodu-ai/moai-adk1.2k—~2.3kAutomated safety check: PassApache-2.0
Discover Securityrand/cc-polymath181—~1.9kAutomated safety check: PassMIT
Security Reviewjewbetcha/opentrace11618 repos~3.1kAutomated safety check: NotesMIT
Security Audit Scannerruvnet/ruflo74k2 repos~823Automated safety check: PassMIT
Security Review ChecklistZeroDeng01/sublinkPro1.7k—~2.3kAutomated safety check: PassMIT
Kuri Agentjustrach/kuri365—~1.3kAutomated safety check: NotesCustom licence

Similar skills

  • Discover Security

    rand/cc-polymath

    Automatically discover security skills when working with authentication, authorization, input validation, security headers, vulnerability assessment, or secrets management.

    181 GitHub stars~1.9k tokensUpdated 7 mo ago
    SecurityAuto-check passed
  • Security Review

    jewbetcha/opentrace

    A skill your agent uses when adding authentication, handling user input, working with secrets, creating API endpoints, or implementing payment/sensitive features.

    116 GitHub starsUsed in 18 repos~3.1k tokens
    SecurityAuto-check: notes
  • Runs claude-flow CLI security scans for input validation, path traversal, SQL injection, XSS, hardcoded secrets and known CVEs, and writes an audit report.

    74k GitHub starsUsed in 2 repos~823 tokens
    SecurityAuto-check passed
  • Security Review Checklist

    ZeroDeng01/sublinkPro

    Checklist-driven security review for changes to authentication, authorization, MFA, secrets, input validation and other security-critical code.

    1.7k GitHub stars~2.3k tokensUpdated today
    SecurityAuto-check passed
  • Kuri Agent

    justrach/kuri

    Use kuri-agent to automate Chrome — navigate pages, interact with elements via a11y refs, capture screenshots, run security audits, enumerate cookies/JWTs, probe for IDOR vulnerabilities, and make…

    365 GitHub stars~1.3k tokensUpdated 2 mo ago
    SecurityAuto-check: notes
  • Code Security

    semgrep/skills

    Official

    Security guidelines for writing secure code. An agent skill from semgrep/skills.

    322 GitHub stars~1.2k tokensUpdated 2 mo ago
    SecurityAuto-check passed

More from modu-ai/moai-adk

All 48 skills in this repo
  • Builds hand-editable SVG diagrams from computed layout coordinates, lints the source and renders a 2x PNG, with rules for when mermaid is the better choice.

    1.2k GitHub stars~5.2k tokensUpdated today
    Auto-check: notes
  • MoAI Foundation Core

    modu-ai/moai-adk

    Reference for MoAI-ADK's core development principles: TRUST 5 quality gates, SPEC-first domain-driven workflow, agent delegation and token budgeting.

    1.2k GitHub stars~5k tokensUpdated today
    Auto-check passed
  • MoAI SPEC Workflow

    modu-ai/moai-adk

    Manages SPEC documents for MoAI-ADK development, with GEARS or EARS requirement notation, acceptance criteria and a link into the Plan-Run-Sync workflow.

    1.2k GitHub stars~5.1k tokensUpdated today
    Auto-check passed
  • MoAI TDD Workflow

    modu-ai/moai-adk

    Drives test-first development through the RED, GREEN, REFACTOR cycle, with a config switch that selects between TDD and a DDD workflow for existing code.

    1.2k GitHub stars~3.1k tokensUpdated today
    Auto-check passed
  • MoAI Worktree Management

    modu-ai/moai-adk

    Gives each SPEC its own Git worktree with a registry of active workspaces, base-branch sync and cleanup of merged ones, inside the MoAI-ADK workflow.

    1.2k GitHub stars~3.9k tokensUpdated today
    Auto-check passed
  • Watches a pull request's CI checks after creation, separates required from auxiliary failures, applies limited safe fixes and escalates anything semantic to you.

    1.2k GitHub stars~2.4k tokensUpdated today
    Auto-check: notes

Categories

Questions about Moai Ref Owasp Checklist

What does Moai Ref Owasp Checklist do?

OWASP Top 10 security checklist, authentication patterns, input validation, and HTTP security headers reference. Moai Ref Owasp Checklist is an agent skill from modu-ai/moai-adk. OWASP Top 10 security checklist, authentication patterns, input validation, and HTTP security headers reference.

When should I use Moai Ref Owasp Checklist?

Moai Ref Owasp Checklist fits situations like: tasks that involve Web application vulnerabilities; tasks that involve Security review; tasks that involve Secure coding.

How do I install Moai Ref Owasp Checklist in Claude Code?

Run `npx skills add modu-ai/moai-adk --skill moai-ref-owasp-checklist -a claude-code`. Or copy the skill folder (.claude/skills/moai-ref-owasp-checklist in modu-ai/moai-adk) into .claude/skills/moai-ref-owasp-checklist in your project. Claude Code loads it when a task matches its description.

How do I install Moai Ref Owasp Checklist in Codex?

Run `npx skills add modu-ai/moai-adk --skill moai-ref-owasp-checklist -a codex`. Or copy the skill folder (.claude/skills/moai-ref-owasp-checklist in modu-ai/moai-adk) into .agents/skills/moai-ref-owasp-checklist in your project. Codex loads it when a task matches its description.

Can I use Moai Ref Owasp Checklist in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add modu-ai/moai-adk --skill moai-ref-owasp-checklist -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/moai-ref-owasp-checklist, .gemini/skills/moai-ref-owasp-checklist, .github/skills/moai-ref-owasp-checklist and .opencode/skills/moai-ref-owasp-checklist in your project.

What does Moai Ref Owasp Checklist need to run?

SKILL.md names no scripts, command-line tools or credentials: Moai Ref Owasp Checklist is instructions for the agent only.

Does Moai Ref Owasp Checklist access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Moai Ref Owasp Checklist safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Moai Ref Owasp Checklist use?

Moai Ref Owasp Checklist is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Moai Ref Owasp Checklist use?

About 2.3k tokens (SKILL.md is roughly 9.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Moai Ref Owasp Checklist?

Skills that share tags, products or a category with Moai Ref Owasp Checklist: Discover Security (rand/cc-polymath, 181 stars), Security Review (jewbetcha/opentrace, 116 stars), Security Audit Scanner (ruvnet/ruflo, 74k stars) and Security Review Checklist (ZeroDeng01/sublinkPro, 1.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Moai Ref Owasp Checklist?

modu-ai (a GitHub organization) maintains it in modu-ai/moai-adk, which has 1,232 GitHub stars. The repository holds 48 skills in this directory. The repository was last updated on October 9, 2026.

Source: modu-ai/moai-adk on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.