claude-plugins-official

A marketplace listing for six Claude Code add-ons, including tools for agent development, project setup, frontend work, hooks, and plugin development. A marketplace is a catalogue from which add-ons can be made available.

In plain words
What is it for?
Use it to list or organize the agent-sdk-dev, claude-code-setup, frontend-design, hookify, and plugin-dev add-ons, plus the marketplace metadata.
Why use it?
It keeps these add-ons and their descriptions in one place. Developers can see what each add-on is for and where its files are located.

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 bearlike/Assistant
agentmods
npx agentmods add plugins/bearlike/assistant/marketplace
Clone the repo
git clone --depth 1 https://github.com/bearlike/Assistant

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

claude-plugins-official 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 2d 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.

demo/plugins/marketplaces/claude-plugins-official/.claude-plugin/marketplace.json · 45 lines

What it actually says

{
  "name": "claude-plugins-official",
  "owner": {
    "name": "Anthropic"
  },
  "plugins": [
    {
      "name": "agent-sdk-dev",
      "description": "Development kit for working with the Claude Agent SDK",
      "category": "development",
      "source": "./plugins/agent-sdk-dev"
    },
    {
      "name": "claude-code-setup",
      "description": "Analyze codebases and recommend tailored Claude Code automations such as hooks, skills, MCP servers, and subagents.",
      "category": "productivity",
      "source": "./plugins/claude-code-setup"
    },
    {
      "name": "frontend-design",
      "description": "Create distinctive, production-grade frontend interfaces with high design quality. Generates creative, polished code that avoids generic AI aesthetics.",
      "category": "development",
      "source": "./plugins/frontend-design"
    },
    {
      "name": "hookify",
      "description": "Easily create custom hooks to prevent unwanted behaviors by analyzing conversation patterns or from explicit instructions. Define rules via simple markdown files.",
      "category": "productivity",
      "source": "./plugins/hookify"
    },
    {
      "name": "plugin-dev",
      "description": "Comprehensive toolkit for developing Claude Code plugins. Includes 7 expert skills covering hooks, MCP integration, commands, agents, and best practices. AI-assisted plugin creation and validation.",
      "category": "development",
      "source": "./plugins/plugin-dev"
    },
    {
      "name": "skill-creator",
      "description": "Create new skills, improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, update or optimize an existing skill, run evals to test a skill, or benchmark skill performance with variance analysis.",
      "category": "development",
      "source": "./plugins/skill-creator"
    }
  ]
}
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. 2d ago First seen · 45 lines scan A c7865ad923da

Subscribe to this mod's changes

claude-plugins-official is a plugin published in the GitHub repository bearlike/Assistant (41 stars, last pushed 8d 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 2026-08-30.