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core

core is a plugin for Claude Code from CHENyiru3/AI-Skills-Collections. Its manifest loads nothing; the 5 skills it bundles cost 258 tokens per session together, scanned A, original, MIT.

A plugin collection containing utilities for writing skills, finding skills, auditing security, and considering performance. A plugin groups related add-ons that an agent can load.

In plain words
What is it for?
Use it when creating or locating agent skills or performing a security audit.
Why use it?
It puts common development and security helpers in one reusable collection.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

not rated 2repo changed yesterday A scan tokens not measured original MIT

Good fit Use it when creating or locating agent skills or performing a security audit.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add CHENyiru3/AI-Skills-Collections
/plugin install core
View source ↗ CHENyiru3/AI-Skills-Collections
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/CHENyiru3/AI-Skills-Collections

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 core

README.md
[![agentmods](https://agentmods.dev/badge/plugins/chenyiru3/ai-skills-collections/core/github.svg)](https://agentmods.dev/plugins/chenyiru3/ai-skills-collections/core)
Your own site
<a href="https://agentmods.dev/plugins/chenyiru3/ai-skills-collections/core"><img src="https://agentmods.dev/badge/plugins/chenyiru3/ai-skills-collections/core/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 core

Your own site · 80×15
<a href="https://agentmods.dev/plugins/chenyiru3/ai-skills-collections/core"><img src="https://agentmods.dev/badge/plugins/chenyiru3/ai-skills-collections/core.svg" alt="Reviewed on agentmods" width="80" 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 5 skills cost 258 tokens a session between them.
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.
Security

Grade A, and why

core 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 yesterday.

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-plugin/marketplace.json#core · 13 lines

What it actually says

{
  "name": "core",
  "description": "Core utilities — skill authoring, security, scientific ideation and coding governance",
  "source": "./skills-market/core",
  "strict": false,
  "skills": [
    "./dev/skill-creator",
    "./dev/skill-cutter",
    "./research/scientific-brainstorming",
    "./research/scientific-coding-governance",
    "./security/security-audit"
  ]
}
Contents

What it installs

The manifest is a name and a version. 5 skills travel with it, and installing the plugin installs all of them — 258 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside marketplace.json#core in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. yesterday Changed · +2 lines 48701c7f72d0
  2. 3d ago Changed c95c992e260f
  3. 1mo ago First seen · 11 lines scan A b721ed34a7f7

Subscribe to this mod's changes

core is a plugin published in the GitHub repository CHENyiru3/AI-Skills-Collections (2 stars, last pushed 3d ago), licensed MIT. 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 2026-10-02.

Building agentsSecurity
Related

core compared with plugins from other repositories

core next to 6 plugins from other repositories
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coreCHENyiru3/AI-Skills-CollectionsPlugin23d agoMITA—Claude Code
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claude-plugins-official marketplaceanthropics/claude-plugins-officialPlugin47ktodayApache-2.0A—Claude Code
nextjsvercel/next.jsPlugin144ktodayMITA—Claude Code
themes-examplegoogle-gemini/gemini-cliPlugin109ktodayApache-2.0A—Gemini CLI
knowledge-work-plugins marketplaceanthropics/knowledge-work-pluginsPlugin36kyesterdayApache-2.0A—Claude Code
code-modernizationanthropics/claude-plugins-officialPlugin47ktodayApache-2.0A—Claude Code