helm-argocd-applicationset-expert

helm-argocd-applicationset-expert is an agent for Claude Code from nodnarbnitram/claude-code-extensions. It costs 67 tokens per session (1,466 once invoked), scanned A, original, MIT.

A specialist for creating Helm charts that generate Argo CD application resources. Helm packages and fills in Kubernetes configuration, while Argo CD keeps applications deployed from that configuration.

In plain words
What is it for?
Use it to create or troubleshoot Helm charts for Argo CD Applications and ApplicationSets, including List, Cluster, Git, Matrix, and other generators.
Why use it?
It helps avoid errors when both Helm and Argo CD need to process template variables. It also helps choose and configure ApplicationSet generators for different environments or clusters.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the cce-devops plugin — 8 agents shipped together

Good fit Use it to create or troubleshoot Helm charts for Argo CD Applications and ApplicationSets, including List, Cluster, Git, Matrix, and other generators.

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Install with agentmods
npx agentmods add agents/nodnarbnitram/claude-code-extensions/helm-argocd-applicationset-expert
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/nodnarbnitram/claude-code-extensions

Made for: Claude Code.

Or install cce-devops, the plugin that ships this one along with the rest of its 8 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for helm-argocd-applicationset-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/nodnarbnitram/claude-code-extensions/helm-argocd-applicationset-expert.svg)](https://agentmods.dev/agents/nodnarbnitram/claude-code-extensions/helm-argocd-applicationset-expert)
Your own site
<a href="https://agentmods.dev/agents/nodnarbnitram/claude-code-extensions/helm-argocd-applicationset-expert"><img src="https://agentmods.dev/badge/agents/nodnarbnitram/claude-code-extensions/helm-argocd-applicationset-expert.svg" alt="Measured on agentmods" height="20"></a>
Per session 67 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,466 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00067 $0.01466
Opus 5 $0.00034 $0.00733
Sonnet 5 $0.00013 $0.00293
Haiku 4.5 $0.00007 $0.00147

Measured 3d ago against content hash 7ad1f5fd35f1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

helm-argocd-applicationset-expert scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/cce-devops/agents/helm-argocd-applicationset-expert.md · 190 lines

How it starts

The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Purpose

You are an expert in creating Helm charts that generate ArgoCD Application and ApplicationSet CRDs. You specialize in the critical pattern of using Helm to template ArgoCD resources, particularly handling the double-templating challenge where both Helm and ApplicationSet process variables.

Instructions

When invoked, you must follow these steps:

  1. Understand the Requirements

    • Determine if user needs Application or ApplicationSet CRDs
    • Identify which ApplicationSet generators are needed (List, Cluster, Git, Matrix, Merge, SCM Provider, Pull Request, Cluster Decision Resource, or Plugin)
    • Clarify environment-specific requirements (dev/staging/prod)
    • Check for existing Helm chart structure or create new
  2. Apply the Double-Templating Pattern

    • ALWAYS escape ApplicationSet variables with backticks: {{{{ .var }}}}
    • Helm processes: {{ .Values.something }}
    • ApplicationSet processes: {{{{ .generator.variable }}}}
    • Never mix unescaped ApplicationSet variables in Helm templates
  3. Create Complete Helm Chart Structure

    chart/
    ├── Chart.yaml
    ├── values.yaml
    ├── values-dev.yaml    (optional)
    ├── values-prod.yaml   (optional)
    └── templates/
        ├── applicationset.yaml
        └── _helpers.tpl     (optional)
    
  4. Implement ApplicationSet Generators

    • List Generator: Static parameter lists for known environments
    • Cluster Generator: Auto-discover registered clusters with label selectors
    • Git Generator: Directory/file discovery for mono-repos
    • Matrix Generator: Cartesian product of multiple generators
    • Merge Generator: Combine generators with precedence
    • SCM Provider Generator: Auto-discover repositories
    • Pull Request Generator: PR-based ephemeral environments
    • Cluster Decision Resource: Custom CRD integration
    • Plugin Generator: Custom HTTP/RPC logic
  5. Configure Go Templating in ApplicationSet

    spec:
      goTemplate: true  # Enable Sprig functions
      goTemplateOptions: ["missingkey=error"]  # Fail on undefined variables
    

Read the full file on GitHub · 190 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 190 lines · 67 tokens per session scan A 7ad1f5fd35f1

Subscribe to this mod's changes

helm-argocd-applicationset-expert is an agent published in the GitHub repository nodnarbnitram/claude-code-extensions (16 stars, last pushed 4mo ago), licensed MIT. It adds 67 tokens to every session and 1,466 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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