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Dev tools · October 23, 2021

Kosko

Organize Kubernetes manifests in JavaScript.

Kosko launched on October 23, 2021 with 6 votes, #1,464 of 2,933 launches that month. The site was still online in September 2026, 4 years on.

What it does

Kosko can help you organize your Kubernetes manifests in JavaScript or TypeScript, deploy to multiple environments, and ensure manifests are type-safe using OpenAPI schema.

Reuse variables, functions or any JavaScript libraries. Write Kubernetes manifests with less code. Eliminate duplicated YAML snippets here and there. Stop copy and paste when deploying to a new Kubernetes cluster. In Kosko, manifests are split into components and environments. It's faster to create a new environment file than copy and modify existing YAML files. Kosko automatically validates manifests against Kubernetes OpenAPI schema, which helps you locate issues before applying to clusters. With TypeScript support, you can get type definitions, documentation, autocomplete suggestions and more right in your editors. Besides checking if a field should be a number or a string, Kosko can…from kosko.dev

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