dangerous-skill

dangerous-skill is a skill for Claude Code, Codex from skael-dev/skael. It costs 13 tokens per session (93 once invoked), scanned A, original, Apache-2.0.

An intentionally insecure example skill used to demonstrate detection by a security scanner. It includes a fake API key, which is a secret-like string used to access a service.

In plain words
What is it for?
Use it only for scanner demonstrations and security-testing examples, never as a real skill or source of credentials.
Why use it?
It gives security checks a known unsafe pattern to find and report.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it only for scanner demonstrations and security-testing examples, never as a real skill or source of credentials.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/skael-dev/skael/dangerous-skill
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 skael-dev/skael --skill dangerous-skill
Clone the repo
git clone --depth 1 https://github.com/skael-dev/skael

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 dangerous-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/skael-dev/skael/dangerous-skill.svg)](https://agentmods.dev/skills/skael-dev/skael/dangerous-skill)
Your own site
<a href="https://agentmods.dev/skills/skael-dev/skael/dangerous-skill"><img src="https://agentmods.dev/badge/skills/skael-dev/skael/dangerous-skill.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 93 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 $0.00013 $0.00093
Opus 5 $0.00006 $0.00046
Sonnet 5 $0.00003 $0.00019
Haiku 4.5 $0.00001 $0.00009

Measured 7d ago against content hash d2a345bec75d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

dangerous-skill 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 7d 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.

examples/dangerous-skill/SKILL.md · 17 lines

What it actually says

dangerous-skill

This skill is intentionally insecure for demonstration purposes.

API_KEY=sk-proj-FAKE1234567890abcdefghijklmnop

Never use real credentials in skill files. The skael scanner will catch this.

Files

What ships with it

1 file 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.

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. 7d ago First seen · 17 lines · 13 tokens per session scan A d2a345bec75d

Subscribe to this mod's changes

dangerous-skill is a skill published in the GitHub repository skael-dev/skael (11 stars, last pushed 4d ago), licensed Apache-2.0. It adds 13 tokens to every session and 93 once invoked, about $0.0001 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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