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Deterministic fault injection to expose rare bugs.

Software Engineering#simulation#coverage#fault-injection#race-condition#buggify#chaos-testing#deterministic-seed
AuthorPierreZ
Version1.0.0
Installs0

System Documentation

What problem does it solve?

This Skill provides a disciplined approach to injecting deterministic chaos into simulation workloads to exercise rarely triggered error paths and race conditions that are difficult to reproduce in production testing.

Core Features & Use Cases

  • Deterministic fault injection: Uses a seed-based strategy to activate chaos at specific call sites, enabling reproducible bug scenarios.
  • Strategic placement guidance: Offers patterns for injecting chaos at external I/O, timeouts, state transitions, and resource boundaries with coverage checks.
  • Observability & safety: Includes coverage assertions (sometimes_assert) to verify buggify triggers and preserve safety during simulations.
  • Cross-provider reproducibility: Supports deterministic behavior across different simulation providers via a stable seed and deterministic randomness.

Quick Start

Identify a suitable chaos site, wrap it with a buggify check, and run the simulation with a fixed seed to reproduce and study the resulting bug path. Then adjust probabilities and placement guided by the provided TROUBLESHOOTING and PLACEMENT-GUIDE materials.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: Using Buggify
Download link: https://github.com/PierreZ/moonpool/archive/main.zip#using-buggify

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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