---
name: "helm-chart-templating-values"
description: "Author modular, reusable production Helm charts with strict values schema validation."
metadata:
  author: "Helm"
  version: "1.0.0"
  runtime_compatibility:
    - "codex"
    - "claude-code"
    - "cursor"
    - "windsurf"
triggers:
  - "create helm chart template"
  - "write values.schema.json helm"
  - "helm lint and dry-run"
permissions:
  fs_read: true
  fs_write: "workspace"
  shell_exec: false
  net_access: false
---

# Helm 3 Chart Development & Values Hierarchy

Develops Helm 3 charts: authoring templates (_helpers.tpl, named templates), values.yaml hierarchies, values.schema.json validation, release notes (NOTES.txt), dependency management (Chart.lock), and linting.

## When to Invoke
Invoke this skill whenever you need to:
- create helm chart template
- write values.schema.json helm
- helm lint and dry-run

## Execution SOP & Rules
1. Scaffold chart: helm create mychart and prune unnecessary default boilerplate.
2. Define reusable template snippets in templates/_helpers.tpl with define and include.
3. Validate values against schema using helm lint --strict.
4. Preview rendered manifests: helm template my-release ./mychart -f values-prod.yaml.

## Verification Checklist
- Run local linting, syntax validation, and type-checks before reporting completion.
- Ensure all created or modified files adhere to workspace boundaries and avoid uncommitted secrets.
- Verify tests or build commands exit cleanly with return code 0.