skill-creator

skill-creator is a plugin for Claude Code from DennisLiuCk/claude-plugin-marketplace. Its manifest loads nothing; the 1 skill, 3 agents it bundles cost 408 tokens per session together, scanned A, original, no licence file.

A plugin for creating new coding-agent skills and editing existing ones. It also covers testing, benchmarking, and improving skill descriptions so they trigger more accurately.

In plain words
What is it for?
It helps create, modify, optimise, test, and compare skills, including reviewing how well a skill performs.
Why use it?
It gives you a defined process for building and evaluating reusable agent instructions instead of developing them without checks.

Plugin for Claude Code

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.

Claude Code
/plugin marketplace add DennisLiuCk/claude-plugin-marketplace
agentmods
npx agentmods add plugins/dennisliuck/claude-plugin-marketplace/skill-creator
Clone the repo
git clone --depth 1 https://github.com/DennisLiuCk/claude-plugin-marketplace

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 skill-creator

README.md
[![agentmods](https://agentmods.dev/badge/plugins/dennisliuck/claude-plugin-marketplace/skill-creator.svg)](https://agentmods.dev/plugins/dennisliuck/claude-plugin-marketplace/skill-creator)
Your own site
<a href="https://agentmods.dev/plugins/dennisliuck/claude-plugin-marketplace/skill-creator"><img src="https://agentmods.dev/badge/plugins/dennisliuck/claude-plugin-marketplace/skill-creator.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill, 3 agents cost 408 tokens a session between them.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Security

Grade A, and why

skill-creator 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 5d 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/skill-creator/.claude-plugin/plugin.json · 10 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Contents

What it installs

The manifest is a name and a version. 1 skill, 3 agents travel with it, and installing the plugin installs all of them — 408 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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. 5d ago First seen · 10 lines scan A d9ae08c2cb78

Subscribe to this mod's changes

skill-creator is a plugin published in the GitHub repository DennisLiuCk/claude-plugin-marketplace (26 stars, last pushed 6mo ago), with no licence file. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-30.

Related

Other plugins, from other repositories

agent-scaffolders

Meta-plugin containing ecosystem generation and evolution auditing primitives. Includes scaffolding for Agent Skills, Plugins, CLI sub-agents, custom GitHub Copilot agents, GitHub Agentic Workflows (gh-aw), CI/CD Smart Failure agents, Azure Foundry agents, and skill evolution auditing (audit-skill).

richfrem/agent-plugins-skills · not measured

agent-loops

Composable agent loop architectures for learning loops, agent orchestration (0-to-N inner agents), and red team coordination. Framework-agnostic: works with any CLI agent (Claude, Gemini, Copilot, OpenHands, etc.).

richfrem/agent-plugins-skills · not measured

rad-a11y

WCAG 2.2 AA accessibility toolkit for Claude Code. Six skills covering semantic HTML, ARIA patterns, keyboard/focus, forms, automated testing setup, and a static-analysis review pass; one autonomous reviewer agent. Four pure-stdlib Python validators (scan-jsx-patterns, check-tailwind-contrast with real WCAG sRGB ma.

RadOrigin-LLC/RAD-Claude-Skills · not measured

rad-context-prompter

Write, debug, reverse-engineer, and migrate AI prompts — now including agentic loops and goal conditions. The prompt-engineering skill covers writing patterns and platform-specific shape (Claude, GPT, Gemini, Claude Code, OpenAI Codex/AGENTS.md, image generators, agentic tools). The loop-goal-engineering skill authors.

RadOrigin-LLC/RAD-Claude-Skills · not measured

rad-explain

Explain a project to humans, honestly — without overpromising or inventing features that aren't in the repo. Five skills generate audience-targeted communications from your project's actual artifacts (code, docs, planning files): narrate-project — plain-English description, audience-adaptive (non-dev / investor /.

RadOrigin-LLC/RAD-Claude-Skills · not measured

rad-astro

RAD Astro — comprehensive Astro framework coding standards, security hardening, accessibility compliance, performance optimization, and troubleshooting. Covers Islands architecture, Content Layer API v2, Astro Actions, Server Islands, rendering modes (SSG/SSR/hybrid), Core Web Vitals, WCAG 2.2 AA, CSP/XSS/CSRF…

RadOrigin-LLC/RAD-Claude-Skills · not measured