test-chaos

test-chaos is a skill for Claude Code, Codex from dhaupin/vant. It costs 33 tokens per session (311 once invoked), scanned A, original, MIT.

A resilience-testing workflow that deliberately introduces controlled failures, such as stopping processes, blocking network traffic, adding delay, or filling disk space. Resilience testing checks how a system behaves during faults and whether it recovers.

In plain words
What is it for?
Use it to run experiments against processes, networks, storage, databases, containers, or Kubernetes systems and record whether the system handled and recovered from each failure.
Why use it?
It exposes weak recovery paths before real outages, helping teams find failures in fault tolerance and disaster recovery.

Skill for Claude CodeCodex

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

Good fit Use it to run experiments against processes, networks, storage, databases, containers, or Kubernetes systems and record whether the system handled and recovered from each failure.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dhaupin/vant/vant-skill-test-chaos
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 dhaupin/vant --skill vant-skill-test-chaos
Clone the repo
git clone --depth 1 https://github.com/dhaupin/vant

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 test-chaos

README.md
[![agentmods](https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-test-chaos/github.svg)](https://agentmods.dev/skills/dhaupin/vant/vant-skill-test-chaos)
Your own site
<a href="https://agentmods.dev/skills/dhaupin/vant/vant-skill-test-chaos"><img src="https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-test-chaos/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 test-chaos

Your own site · 80×15
<a href="https://agentmods.dev/skills/dhaupin/vant/vant-skill-test-chaos"><img src="https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-test-chaos.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 311 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 $0.00033 $0.00311
Opus 5 $0.00016 $0.00156
Sonnet 5 $0.00007 $0.00062
Haiku 4.5 $0.00003 $0.00031

Measured 9d ago against content hash bd801d35d36a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

test-chaos 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 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.

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.

models/public/skills/vant-skill-test-chaos/SKILL.md · 73 lines

What it actually says

Test Chaos

Resilience testing.

When To Use

  • Fault tolerance
  • Disaster recovery
  • System hardening

Chaos Experiments

1. Kill Process

kill -9 <pid>

2. Cut Network

iptables -A INPUT -j DROP

3. Fill Disk

dd if=/dev/zero of=/full

4. Latency

tc qdisc add dev eth0 root netem delay 5000ms

Tools

Tool Use
Chaos Monkey Netflix chaos
Litmus Kubernetes chaos
Pumba Docker chaos
Gremlin Chaos as service

Output

## Chaos Test

| Experiment | Result | Recovery |
|------------|--------|---------|
| Kill DB | [FAIL→RECOVERED] | 5s |
| Net cut | [FAIL→RECOVERED] | 2s |
| Disk full | [HANDLED] | N/A |

Role: Chaos Engineer
Input: Experiment
Output: Resilience

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. 9d ago First seen · 73 lines · 33 tokens per session scan A bd801d35d36a

Subscribe to this mod's changes

test-chaos is a skill published in the GitHub repository dhaupin/vant (9 stars, last pushed 10d ago), licensed MIT. It adds 33 tokens to every session and 311 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 2026-08-31.

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