# chaostoolkit/chaostoolkit

Chaos Engineering Toolkit & Orchestration for Developers

Repository: https://github.com/chaostoolkit/chaostoolkit
Canonical: https://ross.abutalabs.com/products/chaostoolkit
Homepage: https://chaostoolkit.org
Language: Python
License: Apache-2.0
License Family: permissive
Topics: chaostoolkit, chaos-engineering, automation, resiliency, reliability, reliability-engineering, devops-tools, sre
Last push: 2026-08-09T19:56:48+00:00

## Health v2 (maintenance only)
Score: 86/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 96, release rhythm 64, longevity 100
- inputs: {"age_days": 3265, "days_push": 24, "days_rel": 25, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2020, forks 204 (observed 2026-08-28T04:06:06.271976+00:00)

## What it is
The Chaos Toolkit (ctk) is a Python-based CLI for declaring and running Chaos Engineering experiments as JSON/YAML files. It is extensible via plugins to target cloud environments, datacenters, Kubernetes, and CI/CD pipelines.

## Use cases
- run chaos engineering experiments against my infrastructure
- inject failures into a kubernetes cluster to test resiliency
- define steady-state hypothesis checks for my service
- embed chaos experiments in a CI/CD pipeline
- write chaos experiments as code in JSON or YAML
- verify my system recovers from turbulence with rollbacks
- test reliability of cloud applications by breaking things on purpose

## When to choose
- you want declarative, version-controlled chaos experiments runnable from a CLI
- you need to automate fault injection across cloud, datacenter, or CI/CD environments
- you want an extensible, plugin-driven chaos engineering tool with no vendor lock-in

## When to avoid
- you need a GUI dashboard for continuous chaos orchestration
- you want a fully managed chaos SaaS without writing experiment files
- your target platform has no existing chaostoolkit extension and you cannot write one

## Facets
- artifact type: cli-tool
- maturity: active
- function: cli, testing, workflow-automation, developer-tools
- domain: developer-tools, cloud-computing
- platform: python, cli, cross-platform, windows
- tags: chaos-engineering, resiliency, reliability, sre, fault-injection, steady-state-hypothesis, ci-cd, devops, automation, linux, macos

## Member repositories
- chaostoolkit/chaostoolkit (main) score 86

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:06.271976+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:00:16.148946+00:00, confidence not recorded.
  - readme: https://github.com/chaostoolkit/chaostoolkit (fetched 2026-08-28T04:06:06.271976+00:00, sha 5343968aac23)
  - homepage: https://chaostoolkit.org (fetched 2026-08-29T10:40:17.322903+00:00, sha 87b93c05cac3)
  - site_page: https://chaostoolkit.org/reference/usage/install (fetched 2026-08-29T10:40:17.358259+00:00, sha 0b5fa3ee3611)
  - registry_pypi: https://pypi.org/pypi/chaostoolkit/json (fetched 2026-08-29T10:40:17.416557+00:00, sha 9c60de6fda83)
  - site_page: https://chaostoolkit.org/reference/tutorials/tolerance (fetched 2026-08-29T10:40:17.395459+00:00, sha 9c8fc4a74ec9)
- Data as of 2026-08-30T08:39:29.467469+00:00.