# helm/chart-testing

CLI tool for linting and testing Helm charts

Repository: https://github.com/helm/chart-testing
Canonical: https://ross.abutalabs.com/products/chart-testing
Language: Go
License: Apache-2.0
License Family: permissive
Topics: helm, docker, testing, linting, kubernetes, golang
Last push: 2026-08-24T23:03:37+00:00

## Health v2 (maintenance only)
Score: 74/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 27, longevity 100
- inputs: {"age_days": 3198, "days_push": 9, "days_rel": 329, "gap_med": 133.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1639, forks 250 (observed 2026-08-28T04:05:15.134834+00:00)

## What it is
A Go CLI tool (`ct`) for linting and testing Helm charts, automatically detecting charts changed against a target branch. It is designed for validating chart pull requests in CI pipelines and ships as a Docker image with all dependencies included.

## Use cases
- lint helm charts in ci
- test only charts changed in a pull request
- validate chart yaml with yamllint and yamale
- install charts on a kubernetes cluster to verify they work
- set up automated chart repository testing with github actions

## When to choose
- you maintain a helm chart repository and need automated PR validation
- you want to lint and install-test charts in CI with change detection
- you need a self-contained toolchain via the provided docker image

## When to avoid
- you need general kubernetes manifest testing rather than helm charts
- you want a GUI or long-running service rather than a CLI
- your charts are not managed in git with branch-based workflows

## Facets
- artifact type: cli-tool
- maturity: active
- function: testing, linter, ci-cd, cli
- domain: developer-tools, testing
- platform: cli, windows, go
- tags: helm, helm-charts, kubernetes, chart-testing, linting, pull-request-validation, devops, containers, docker, linux, macos

## Member repositories
- helm/chart-testing (main) score 74

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:15.134834+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 2026-08-30T03:46:31.236446+00:00, confidence not recorded.
  - readme: https://github.com/helm/chart-testing (fetched 2026-08-28T04:05:15.134834+00:00, sha 36d6051144f5)
- Data as of 2026-08-30T08:39:29.467469+00:00.