owasp-asvs

owasp-asvs is a skill for Claude Code, Codex from Nmor/the-claude-council. It costs 43 tokens per session (4,398 once invoked), scanned A, original, no licence file.

A guide to the OWASP Application Security Verification Standard 4.0.3, a checklist for testing and improving web-application security. It organises controls into three levels based on the required assurance.

In plain words
What is it for?
Use it to choose security controls, map them to assurance levels, and run verification checks for an application.
Why use it?
It turns broad application-security goals into specific controls that developers can implement and verify. This makes security reviews more consistent and easier to check.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to choose security controls, map them to assurance levels, and run verification checks for an application.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nmor/the-claude-council/owasp-asvs
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 Nmor/the-claude-council --skill owasp-asvs
Clone the repo
git clone --depth 1 https://github.com/Nmor/the-claude-council

Made for: Claude Code, Codex.

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 owasp-asvs

README.md
[![agentmods](https://agentmods.dev/badge/skills/nmor/the-claude-council/owasp-asvs/github.svg)](https://agentmods.dev/skills/nmor/the-claude-council/owasp-asvs)
Your own site
<a href="https://agentmods.dev/skills/nmor/the-claude-council/owasp-asvs"><img src="https://agentmods.dev/badge/skills/nmor/the-claude-council/owasp-asvs/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 owasp-asvs

Your own site · 80×15
<a href="https://agentmods.dev/skills/nmor/the-claude-council/owasp-asvs"><img src="https://agentmods.dev/badge/skills/nmor/the-claude-council/owasp-asvs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,398 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 unknown 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 $0.00043 $0.04398
Opus 5 $0.00022 $0.02199
Sonnet 5 $0.00009 $0.00880
Haiku 4.5 $0.00004 $0.00440

Measured 8d ago against content hash b7ff0e1179c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

owasp-asvs 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 8d 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.

skills/owasp-asvs/SKILL.md · 283 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 8d ago First seen · 283 lines · 43 tokens per session scan A b7ff0e1179c3

Subscribe to this mod's changes

owasp-asvs is a skill published in the GitHub repository Nmor/the-claude-council (9 stars, last pushed 5d ago), with no licence file. It adds 43 tokens to every session and 4,398 once invoked, about $0.0002 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 2026-09-03.

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