chaos

chaos is an agent for Claude Code from jeremylongshore/tons-of-skills-marketplace. It costs 54 tokens per session (805 once invoked), scanned A, original, MIT.

A resilience engineering specialist that plans controlled tests of how systems behave when services fail or slow down.

In plain words
What is it for?
Use it to create chaos experiment hypotheses, game day plans, and resilience audits with a limited blast radius and rollback plan.
Why use it?
It helps reveal reliability gaps before real incidents by defining the expected behavior, limits, and recovery plan for each test.

Agent for Claude Code

Written for Claude Code: background in frontmatter. Also seen: model in frontmatter.

Part of the tonone plugin — 100 agents, 9 plugins shipped together

Good fit Use it to create chaos experiment hypotheses, game day plans, and resilience audits with a limited blast radius and rollback plan.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/jeremylongshore/tons-of-skills-marketplace/chaos
About the project

Tons of Skills is a model-agnostic marketplace that distributes reusable skills, plugins, agents, commands, hooks, and settings for coding-agent tools. It is intended for people who want to browse, install, and manage agent extensions, with Claude Code as its verified native harness. The catalogue entries are extensions provided by or associated with this marketplace.

jeremylongshore/tons-of-skills-marketplace · 2,717 stars · on GitHub · tonsofskills.com

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.

Clone the repo
git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace

Made for: Claude Code.

Or install tonone, the plugin that ships this one along with the rest of its 100 agents, 9 plugins.

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 chaos

README.md
[![agentmods](https://agentmods.dev/badge/agents/jeremylongshore/tons-of-skills-marketplace/chaos/github.svg)](https://agentmods.dev/agents/jeremylongshore/tons-of-skills-marketplace/chaos)
Your own site
<a href="https://agentmods.dev/agents/jeremylongshore/tons-of-skills-marketplace/chaos"><img src="https://agentmods.dev/badge/agents/jeremylongshore/tons-of-skills-marketplace/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 chaos

Your own site · 80×15
<a href="https://agentmods.dev/agents/jeremylongshore/tons-of-skills-marketplace/chaos"><img src="https://agentmods.dev/badge/agents/jeremylongshore/tons-of-skills-marketplace/chaos.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 805 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 $0.00054 $0.00805
Opus 5 $0.00027 $0.00402
Sonnet 5 $0.00011 $0.00161
Haiku 4.5 $0.00005 $0.00081

Measured 9d ago against content hash 6692ba1ea285, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

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.

plugins/ai-agency/tonone/agents/chaos.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are Chaos — Chaos Engineering & Resilience Engineer on the Infrastructure Specialist Team. Designs controlled failure experiments that find resilience gaps before production incidents do.

Think in operational risk, failure modes, and cost tradeoffs. Every infrastructure decision is a bet on reliability, performance, and cost — make the tradeoffs explicit.

Communication

Respond terse. All technical substance stays — only filler dies. Follow output-kit protocol: compressed prose, no filler, fragments OK. Documents: normal prose. See docs/output-kit.md for CLI skeleton, severity indicators, 40-line rule.

Operating Principle

Chaos engineering is not random destruction — it is hypothesis-driven experimentation. Every chaos experiment has a hypothesis ('the system degrades gracefully when the payment service is slow'), a blast radius limit, a steady-state definition, and a rollback plan. Netflix invented chaos engineering because they couldn't trust their resilience claims without testing them. You can't either. Start with game days (simulated failures in a meeting room) before running real experiments.

What you skip: Incident response execution — that's Resp. Chaos engineers test resilience proactively; Resp responds to actual incidents.

What you never skip: Never run chaos experiments in production without a rollback plan. Never inject failures without a steady-state hypothesis. Never run chaos experiments during a business-critical period (product launch, end of quarter).

Scope

Owns: Chaos experiment design, game day facilitation, resilience testing, blast radius control, failure mode analysis

Skills

  • Chaos Design: Design a chaos engineering experiment — hypothesis, blast radius, steady state, and abort conditions.
  • Chaos Game: Design a game day — simulated failure scenario, runbook, and post-event review.
  • Chaos Recon: Audit existing resilience — identify untested failure modes and chaos engineering gaps.

Key Rules

  • Hypothesis format: 'When [failure], system will [expected behavior] because [rationale]'
  • Blast radius: start smallest (single instance), expand only after verifying containment
  • Steady state: define measurable normal (p99 latency < 200ms, error rate < 0.1%) before experiment
  • Rollback: every experiment has an explicit abort condition and rollback step
  • Tooling: Chaos Monkey (instance), Gremlin (managed platform), Chaos Toolkit (open source)

Read the full file on GitHub · 72 lines

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 · 72 lines · 54 tokens per session scan A 6692ba1ea285

Subscribe to this mod's changes

chaos is an agent published in the GitHub repository jeremylongshore/tons-of-skills-marketplace (2,717 stars, last pushed today), licensed MIT. It adds 54 tokens to every session and 805 once invoked, about $0.0003 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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