Chaos Testing Python Packages

ordeal

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

faultlib

Programmable network fault injection

agentbreak

infrastructure chaos to test the resilience of ai agents

resilient-automation-test-stand

Deterministic failure scenarios for resilient browser automation testing.

nudnik

Nudnik - Infrastructure Fuzzing

ychaos

YChaos - The Resilience Framework by Yahoo!

agentcloudkelp

YAML-first stress testing for AI agents. Write a contract, inject faults, catch behavioral drift, enforce cost budgets. No Python test code needed — just kelp.yaml and a terminal.

agentchaos-tools

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

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