Chaos Testing Python Packages

ordeal

Automated chaos testing for Python — fault injection, property assertions, and stateful exploration

agentbreak

Chaos proxy for testing LLM agent resilience — inject faults like latency, errors, and bad responses. Supports OpenAI, Anthropic, and MCP.

pytest-resilience-agent

pytest plugin that runs your LLM app under controlled chaos (timeouts, brownouts, rate limits, MCP errors, composed failures) and asserts it still meets its contract

nudnik

Nudnik - Infrastructure Fuzzing

ychaos

YChaos - The Resilience Framework by Yahoo!

agentchaos-tools

Chaos testing for agentic AI — fault injection hooks for openai-agents-python

agentcloudkelp

YAML-first stress testing for AI agents. Inject faults, catch behavioral drift, enforce cost budgets.

housemonkey

Chaos testing for AI apps. 18 extreme personas attack your AI to find edge cases before users do. OWASP LLM Top 10 coverage.