devtools

kube-green

Name: kube-green
Author: kube-green

A K8s operator to reduce CO2 footprint of your clusters

1,382 stars+4★ this week102 forksGoUpdated 9/2/2026100% free · open source

What it does

Kube-green is a Kubernetes operator that reduces the carbon footprint of your clusters by scaling down or turning off unused resources

When to use it

•You have a Kubernetes cluster with varying workload patterns and want to optimize resource usage
•You want to reduce your cloud costs by minimizing idle resources
•You need to report on and reduce the carbon emissions of your cloud infrastructure

Ready-to-paste prompt

kubectl annotate deployment my-deployment kube-green.io/scale-to-zero-enabled: 'true' --namespace=my-namespace

Heads up: You need to have a Kubernetes cluster with version 1.19 or later, as well as the `kubectl` command-line tool installed and configured to use with your cluster

Saves to your device

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/kube-green && curl -fsSL https://workflowstacks.com/api/skills/kube-green/claude-skill -o ~/.claude/skills/kube-green/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

How kube-green works

Codeflow

Free to inspect

Kube-green is a medium Go project (~7.4k lines across 47 code files, plus 5 test files). Setup is light: runs with Docker. Last commit 2 months ago, MIT license, has a test suite.

Size

Medium codebase

~7.4k lines · 47 code files · ~1 h to skim

Setup

Light setup

Runs with Docker.

Runs on

Go · Docker

No API keys detected

Go 90%Makefile 6%Shell 2%Go Template 1%Dockerfile 1%

Where to start reading

1
README.md
Start here — what it does and how to install it
2
cmd/main.go
Where the program starts running
3
go.mod
Dependencies and the commands it exposes
4
internal/patcher/patcher_test.go
Inside internal/ — the main logic begins here

What's in each folder

internal/Core code — the actual logic37 files

api/Backend / API7 files

cmd/Command-line entry points1 files

config/Configuration52 files

charts/Folder34 files

bundle/Folder7 files

logo/Folder4 files

hack/Helper scripts3 files

READMEHas testsDocumentedCI checksDocker readyMIT licenseUpdated 2 mo ago