addy-agent-skills marketplace

addy-agent-skills marketplace is a plugin for Claude Code from hamzaMissewi/agent-skills. Its token cost is not measured, scanned A, a copy of addy-agent-skills marketplace, MIT.

A collection of engineering skills for AI coding agents covering work from writing specifications through release.

In plain words
What is it for?
It supports specification, planning, implementation, test-driven development, verification, code review, and release work.
Why use it?
Agents often need guidance across multiple stages of software development, not just code generation. This package organizes skills for planning, building, checking, reviewing, and shipping changes.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit It supports specification, planning, implementation, test-driven development, verification, code review, and release work.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add hamzaMissewi/agent-skills/plugin install addy-agent-skills marketplace
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/hamzaMissewi/agent-skills

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 addy-agent-skills marketplace

README.md
[![agentmods](https://agentmods.dev/badge/plugins/hamzamissewi/agent-skills/marketplace/github.svg)](https://agentmods.dev/plugins/hamzamissewi/agent-skills/marketplace)
Your own site
<a href="https://agentmods.dev/plugins/hamzamissewi/agent-skills/marketplace"><img src="https://agentmods.dev/badge/plugins/hamzamissewi/agent-skills/marketplace/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 addy-agent-skills marketplace

Your own site · 80×15
<a href="https://agentmods.dev/plugins/hamzamissewi/agent-skills/marketplace"><img src="https://agentmods.dev/badge/plugins/hamzamissewi/agent-skills/marketplace.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 Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 97% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

addy-agent-skills marketplace 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 8d 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.

Origin

This is a copy

97% identical to addy-agent-skills marketplace — 1 line differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude-plugin/marketplace.json · 23 lines

What it actually says

{
  "$schema": "https://json.schemastore.org/claude-code-marketplace.json",
  "name": "addy-agent-skills",
  "description": "Production-grade engineering skills for AI coding agents — covering the full software development lifecycle from spec to ship.",
  "owner": {
    "name": "Addy Osmani",
    "url": "https://github.com/addyosmani"
  },
  "plugins": [
    {
      "name": "agent-skills",
      "source": {
        "source": "github",
        "repo": "addyosmani/agent-skills"
      },
      "description": "Production-grade engineering skills covering every phase of software development: spec, plan, build, verify, review, and ship.",
      "homepage": "https://github.com/addyosmani/agent-skills",
      "license": "MIT",
      "keywords": ["skills", "agents", "engineering", "spec", "tdd", "review", "ship"]
    }
  ]
}
Contents

The plugins it lists here

This marketplace lists 1 plugin kept in the same repository. Each has its own page, its own measurements and its own install command.

Files

What ships with it

1 file beside marketplace.json 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. 8d ago First seen · 23 lines scan A 49d1e650a252

Subscribe to this mod's changes

addy-agent-skills marketplace is a plugin published in the GitHub repository hamzaMissewi/agent-skills (2 stars, last pushed 2mo 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. It is 97% identical to addy-agent-skills marketplace, differing in 1 line, and is treated as a copy.