Clubhouse-Workshop: Skill for Claude Code

.claude/skills/scaffold-plugin/SKILL.md

scaffold-plugin is a skill for Claude Code from Agent-Clubhouse/Clubhouse-Workshop. It costs 43 tokens per session (2,120 once invoked), scanned A, original, MIT.

An interactive guide for creating a new Clubhouse plugin, an add-on for the Clubhouse application, from the beginning. It helps decide what to build, what access scope it needs, and which technical setup to use.

In plain words
What is it for?
Use it to define a plugin idea, choose a project or app scope, select an API version, and start a new plugin project.
Why use it?
It gives developers a starting path when they have an idea but are unsure how to structure a plugin. It explains whether the plugin should work in one project, across projects, or in both places.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

This is Agent-Clubhouse/Clubhouse-Workshop's own configuration. It tells Claude Code how to work on Clubhouse-Workshop itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Clubhouse-Workshop configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Agent-Clubhouse/Clubhouse-Workshop. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Agent-Clubhouse/Clubhouse-Workshop/main/.claude/skills/scaffold-plugin/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Agent-Clubhouse/Clubhouse-Workshop

Made for: Claude Code.

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 scaffold-plugin

README.md
[![agentmods](https://agentmods.dev/badge/skills/agent-clubhouse/clubhouse-workshop/scaffold-plugin/github.svg)](https://agentmods.dev/skills/agent-clubhouse/clubhouse-workshop/scaffold-plugin)
Your own site
<a href="https://agentmods.dev/skills/agent-clubhouse/clubhouse-workshop/scaffold-plugin"><img src="https://agentmods.dev/badge/skills/agent-clubhouse/clubhouse-workshop/scaffold-plugin/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for scaffold-plugin

Your own site · 80×15
<a href="https://agentmods.dev/skills/agent-clubhouse/clubhouse-workshop/scaffold-plugin"><img src="https://agentmods.dev/badge/skills/agent-clubhouse/clubhouse-workshop/scaffold-plugin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,120 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 $0.00043 $0.02120
Opus 5 $0.00022 $0.01060
Sonnet 5 $0.00009 $0.00424
Haiku 4.5 $0.00004 $0.00212

Measured 11d ago against content hash 67e9201f22cf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

scaffold-plugin 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 11d 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.

.claude/skills/scaffold-plugin/SKILL.md · 219 lines

How it starts

The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Scaffold a Clubhouse Plugin

You are a friendly, encouraging guide helping a developer create their first (or next) Clubhouse plugin. Walk them through the process interactively, making decisions together. Keep the tone welcoming — this should feel easy and fun, not intimidating.

Step 1: Understand what they want to build

Ask the developer what they'd like their plugin to do. If they already gave a name or description via $ARGUMENTS, use that as a starting point. If not, ask:

  • What should the plugin do? (Even a rough idea is fine!)
  • What should it be called?

Be encouraging — even simple ideas make great first plugins.

Step 2: Help them choose a scope

Explain the three scopes in plain language and help them pick:

  • project — "Your plugin lives in a project tab. It works with one project at a time. This is the most common choice and the best place to start."
  • app — "Your plugin lives in the sidebar and can see all your projects. Use this for cross-project tools like standup summaries."
  • dual — "Works in both places. You probably don't need this yet."

Recommend project unless they specifically need cross-project access.

Step 3: Determine API version

Read sdk/versions.json to get the latest version. Always use the latest version — do not present older versions as options. Simply inform the developer:

Using API v{latest} (the current release).

Use the latest version for the manifest's engine.api and the package.json dependency paths.

Step 4: Help them pick permissions

Based on what they described, suggest the minimum permissions they'll need. Always include logging, storage, and theme (theme is required for proper color integration). Explain each one in a sentence:

  • logging — see debug messages in the plugin console
  • storage — save data that persists across sessions
  • theme — adapt to the user's color theme (always include this)
  • notifications — show toast messages and dialogs
  • files — read/write files in the project
  • git — read git status, log, diff, branches
  • agents — spawn AI agents to do work
  • terminal — create shell sessions
  • process — run specific CLI tools (eslint, etc.)
  • commands — register keyboard shortcuts and command palette actions (always include this)
  • events — react to file changes
  • settings — user-configurable options
  • navigation — programmatically switch tabs/focus agents
  • widgets — use shared UI components (AgentTerminal, etc.)
  • projects — access all projects (needs app/dual scope)
  • badges — show notification badges on tabs

Read the full file on GitHub · 219 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. 11d ago First seen · 219 lines · 43 tokens per session scan A 67e9201f22cf

Subscribe to this mod's changes

scaffold-plugin is a skill published in the GitHub repository Agent-Clubhouse/Clubhouse-Workshop (2 stars, last pushed 3mo ago), licensed MIT. It adds 43 tokens to every session and 2,120 once invoked, about $0.0002 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 2026-08-31.

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