agentmods.dev

mryll-skills marketplace

A collection of research-backed skills for Claude Code, covering code structure, reviews, testing, documentation, and learning.

In plain words
What is it for?
Use it for architecture discussions, pull-request reviews, test naming, study sessions, documentation models, and related coding tasks.
Why use it?
It gives coding agents shared guidance for common development and review tasks instead of leaving every workflow undefined.

Plugin for Claude Code

3 13d ago A scan tokens not measured original MIT
View the source file mryll/skills
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 mryll/skills
agentmods
npx agentmods add plugins/mryll/skills/marketplace
Clone the repo
git clone --depth 1 https://github.com/mryll/skills

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

mryll-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 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.

.claude-plugin/marketplace.json · 35 lines

What it actually says

{
  "name": "mryll-skills",
  "owner": {
    "name": "mryll"
  },
  "metadata": {
    "description": "Curated agent skills for Claude Code",
    "version": "1.12.0"
  },
  "plugins": [
    {
      "name": "mryll-skills",
      "source": "./",
      "description": "Mryll's collection of research-backed Claude Code skills",
      "version": "1.12.0",
      "strict": false,
      "skills": [
        "./skills/agentmd",
        "./skills/low-complexity",
        "./skills/vertical-slice-architecture",
        "./skills/codex-review",
        "./skills/codex-discuss",
        "./skills/test-namer",
        "./skills/dual-testing",
        "./skills/explain-pr",
        "./skills/como-si-fuera-de-boca",
        "./skills/pr-quiz",
        "./skills/study-session",
        "./skills/ste",
        "./skills/c4-model"
      ]
    }
  ]
}
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 · 35 lines scan A a0d321da5904

Subscribe to this mod's changes

mryll-skills marketplace is a plugin published in the GitHub repository mryll/skills (3 stars, last pushed 13d 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 2026-08-31.

Researchagent-skillsagents-mdclaude-codecognitive-complexitygemini-cliprompt-engineering
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