Guide#

How helm-schema turns a chart into a schema, and how to steer it when a chart needs a nudge.

• Template analysis — how values are extracted from templates and how control flow (if, with, range, eq, not, or) becomes schema structure.
• Values & defaults — the composed values document, default-literal type inference, nullable unions, and --infer-required.
• Kubernetes schemas — pinning versions, the fallback chain, mirrors, offline use, and apiVersion inference.
• CRD schemas — the CRD catalog, strict vs loose version lookup, and hand-maintained overrides.
• Subcharts & dependencies — vendored dependencies, global, and how library-chart helpers are scoped.
• Schema overrides — merge hand-written schemas on top of the inferred output.