Resilience Testing Python Packages

ordeal

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

microburst

AWS failure injection proxy — protocol-aware faults (throttling, latency, resets) that exercise real SDK retry behavior. Works against MiniStack, moto, or real AWS.

agentbreak

infrastructure chaos to test the resilience of ai agents

ychaos

YChaos - The Resilience Framework by Yahoo!

chaosmonkey

A Chaos Engineering swiss army knife

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

toxic-proxy

An asyncio tcp proxy for network resilience testing