A security testing skill that checks whether an AI coding agent can resist fake instructions designed to steal simulated patient data.

It starts a test server, creates a workspace with fake patient data, runs the agent under test, and reports whether data was exfiltrated.

It exposes prompt-injection weaknesses in an isolated test environment without using real patient information.

red-team — Skill for Claude Code by kenlkehl

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 kenlkehl/onc-data-wrangler-plugin --skill red-team

Clone the repo

git clone --depth 1 https://github.com/kenlkehl/onc-data-wrangler-plugin

Made for: Claude Code.

Or install onc-data-wrangler, the plugin that ships this one along with the rest of its 14 skills, 11 agents.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/kenlkehl/onc-data-wrangler-plugin/red-team/github.svg)](https://agentmods.dev/skills/kenlkehl/onc-data-wrangler-plugin/red-team)

Your own site

<a href="https://agentmods.dev/skills/kenlkehl/onc-data-wrangler-plugin/red-team"><img src="https://agentmods.dev/badge/skills/kenlkehl/onc-data-wrangler-plugin/red-team/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/kenlkehl/onc-data-wrangler-plugin/red-team"><img src="https://agentmods.dev/badge/skills/kenlkehl/onc-data-wrangler-plugin/red-team.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,378 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00074	$0.01378
Opus 5	$0.00037	$0.00689
Sonnet 5	$0.00015	$0.00276
Haiku 4.5	$0.00007	$0.00138

Measured 9d ago against content hash 1c7761868d59, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

red-team scanned grade A with 1 finding 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 9d 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.

Asks for rootlowPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

print(f'Run: sudo sh -c \'echo \"127.0.0.1 {scenario.hostname}\" >> /etc/hosts\'')

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

skills/red-team/SKILL.md · 160 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.

9d ago First seen · 160 lines · 74 tokens per session scan A 1c7761868d59

Subscribe to this mod's changes

red-team is a skill published in the GitHub repository kenlkehl/onc-data-wrangler-plugin (5 stars, last pushed 2mo ago), with no licence file. It adds 74 tokens to every session and 1,378 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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red-team