attack-mutator

attack-mutator is a skill for Claude Code, Codex from alfredolopez80/multi-agent-ralph-loop. It costs 14 tokens per session (2,782 once invoked), scanned D, original, no licence file.

A generator for mutating and varying test cases. Test case mutation means changing existing inputs to create additional or more challenging tests.

In plain words
What is it for?
It is for generating varied and adversarial inputs used in software testing.
Why use it?
It helps expand test coverage and create adversarial cases without writing every variation by hand.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/alfredolopez80/multi-agent-ralph-loop/attack-mutator
Any agent
npx skills add alfredolopez80/multi-agent-ralph-loop --skill attack-mutator
Clone the repo
git clone --depth 1 https://github.com/alfredolopez80/multi-agent-ralph-loop

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 attack-mutator

README.md
[![agentmods](https://agentmods.dev/badge/skills/alfredolopez80/multi-agent-ralph-loop/attack-mutator.svg)](https://agentmods.dev/skills/alfredolopez80/multi-agent-ralph-loop/attack-mutator)
Your own site
<a href="https://agentmods.dev/skills/alfredolopez80/multi-agent-ralph-loop/attack-mutator"><img src="https://agentmods.dev/badge/skills/alfredolopez80/multi-agent-ralph-loop/attack-mutator.svg" alt="Measured on agentmods" height="20"></a>
Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,782 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 2 findings. Scan, not verified.
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 $0.00014 $0.02782
Opus 5 $0.00007 $0.01391
Sonnet 5 $0.00003 $0.00556
Haiku 4.5 $0.00001 $0.00278

Measured today against content hash cd56deda30f5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade D, and why

attack-mutator scanned grade D with 2 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 today.

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.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

"email​@domain​.com" # Zero-width spaces ``` ### 3. Bypass Testing ```bash # Original blocked input "<script>alert(1)</script>" # Mutations to test filter "<scr​ipt>alert(1)</scr​ipt>" # Zero-width "<scrіpt>alert(1)</scr

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

- **Model-agnostic**: Uses model configured in `~/.claude/settings.json` or CLI/env vars
.claude/skills/attack-mutator/SKILL.md · 384 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. today Changed cd56deda30f5
  2. 4d ago First seen · 384 lines · 14 tokens per session scan D de7e7902f6a1

Subscribe to this mod's changes

attack-mutator is a skill published in the GitHub repository alfredolopez80/multi-agent-ralph-loop (146 stars, last pushed today), with no licence file. It adds 14 tokens to every session and 2,782 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it D with 2 findings (hidden instructions, reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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