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.
npx skills add smk-labs/claude-plugins --skill owasp-securitygit clone --depth 1 https://github.com/smk-labs/claude-pluginsWrote 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.
[](https://agentmods.dev/skills/smk-labs/claude-plugins/owasp-security)<a href="https://agentmods.dev/skills/smk-labs/claude-plugins/owasp-security"><img src="https://agentmods.dev/badge/skills/smk-labs/claude-plugins/owasp-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.
<a href="https://agentmods.dev/skills/smk-labs/claude-plugins/owasp-security"><img src="https://agentmods.dev/badge/skills/smk-labs/claude-plugins/owasp-security.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00072 | $0.01725 |
| Opus 5.5 | $0.00029 | $0.00690 |
| Sonnet 5.5 | $0.00014 | $0.00345 |
| Haiku 4.5 | $0.00007 | $0.00172 |
Grade A, and why
owasp-security scanned grade A with 2 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 1mo 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
6. **Standard Library:** Historic CVEs in std libs (Python urllib, Java XML, Ruby OpenSSL). Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
os.system(f"convert {filename} output.png") How it starts
The opening of the file, as written. The whole thing — 199 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OWASP Security Best Practices
Apply these security standards when writing or reviewing code.
For deeper material, load on demand:
- references/language-security-quirks.md: language-specific pitfalls and unsafe/safe patterns for 20 languages (JS/TS, Python, Java, C#, PHP, Go, Ruby, Rust, Swift, Kotlin, C/C++, Scala, R, Perl, Bash, Lua, Elixir, Dart, PowerShell, SQL). Read it when reviewing code in a specific language.
- references/llm-agentic-security.md: OWASP Top 10 for LLM Applications (2025) and Agentic AI security (2026), with checklists and code patterns. Read it when the code calls an LLM, builds a RAG pipeline, or wires up an AI agent with tools.
Quick Reference: OWASP Top 10:2025
| # | Vulnerability | Key Prevention |
|---|---|---|
| A01 | Broken Access Control | Deny by default, enforce server-side, verify ownership |
| A02 | Security Misconfiguration | Harden configs, disable defaults, minimize features |
| A03 | Supply Chain Failures | Lock versions, verify integrity, audit dependencies |
| A04 | Cryptographic Failures | TLS 1.2+, AES-256-GCM, Argon2/bcrypt for passwords |
| A05 | Injection | Parameterized queries, input validation, safe APIs |
| A06 | Insecure Design | Threat model, rate limit, design security controls |
| A07 | Auth Failures | MFA, check breached passwords, secure sessions |
| A08 | Integrity Failures | Sign packages, SRI for CDN, safe serialization |
| A09 | Logging Failures | Log security events, structured format, alerting |
| A10 | Exception Handling | Fail-closed, hide internals, log with context |
Security Code Review Checklist
When reviewing code, check for these issues:
Input Handling
- All user input validated server-side
- Using parameterized queries (not string concatenation)
- Input length limits enforced
- Allowlist validation preferred over denylist
Authentication & Sessions
- Passwords hashed with Argon2/bcrypt (not MD5/SHA1)
- Session tokens have sufficient entropy (128+ bits)
- Sessions invalidated on logout
- MFA available for sensitive operations
What ships with it
2 files 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.
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.
- 1mo ago Changed · +3 lines · -42 tokens per session eb352e5ff49b
- 1mo ago First seen · 196 lines · 114 tokens per session scan A 3674820f65ba
owasp-security is a skill published in the GitHub repository smk-labs/claude-plugins (11 stars, last pushed 28d ago), licensed MIT. It adds 72 tokens to every session and 1,725 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 2 findings (makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
pmm-resume
Reviews and tailors a PMM resume (IC to VP, including AI PMM roles): dissects the job description, ranks bullets by impact fit and rebuilds the complete resume in one pass. Trigger on: resume + JD paste, "tailor this", "which bullets for this role", "rebuild for [company]", "review my PMM resume", "reframe for…
product-marketing-context
Builds and maintains the shared GTM brain (product context, ICP, positioning, voice, market context, proof points, plus optional strategy and execution sections and the deal-reality fields) that every other skill reads before producing output. Works standalone from your own answers, and gets stronger when you connect…
competitor-deep-dive
Builds a long-form, fully sourced deep-dive on one competitor for a named decision (strategy call, RFP, pricing change, roadmap bet), with dated reviews, deal evidence, a head-to-head per offering and where they win. Triggers: "deep-dive on [competitor]", "full competitor write-up", "what do users really say about…
workflow-orchestrator
Chains positioning, competitive, GTM strategy, campaign briefs, stakeholder maps and retros into one coherent PMM program with a master document and brain updates. Trigger on: "run full GTM workflow", "run a full launch", "launch [product] end to end", "positioning refresh", "quarterly PMM cycle", "competitive…
positioning-messaging
Builds or audits positioning statements, messaging hierarchies, homepage copy and persona cards using April Dunford's Obviously Awesome framework, in five modes (build, audit, fletch, sales-enablement, homepage). Refuses to generate without a named primary persona and 3+ alternatives including status quo, and blocks…
writing-assistant
Rewrites, sharpens and drafts B2B writing in the writer's real voice: Slack messages, emails, memos, PRDs, decks, plus marketing content (blog posts, landing pages, press releases, case studies, newsletters, social posts). Use whenever someone wants to rewrite, tighten, draft or audit copy, asks why copy isn't landing…