A collection of agent skills for handling recurring development and writing tasks. It includes skills for Git commits, simplifying overcomplicated work, researching best practices, finding blind spots, and editing instruction files.

Use its included skills to create commits, simplify designs, research an approach, audit settings, improve CLAUDE.md or AGENTS.md files, manage environment variables, or adjust writing style.

It provides reusable guidance for routine tasks that otherwise require repeating the same decisions and checks. The skills cover both coding workflow and technical writing.

skills — Plugin by vinta

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 vinta/hal-9000

agentmods

npx agentmods add plugins/vinta/hal-9000/skills

Clone the repo

git clone --depth 1 https://github.com/vinta/hal-9000

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

skills 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.

skills/.claude-plugin/plugin.json · 48 lines

What it actually says

{
  "name": "hal-skills",
  "version": "2.5.0",
  "description": "Opinionated agentic skills that do the boring parts for you",
  "skills": [
    "./commit",
    "./fuck-over-engineering",
    "./best-practices",
    "./blindspot",
    "./simple-english",
    "./write-like-me",
    "./audit-claude-settings",
    "./refactor-claude-md",
    "./refactor-agents-md",
    "./update-allowed-tools"
  ],
  "author": {
    "name": "Vinta Chen",
    "email": "[email protected]"
  },
  "repository": "https://github.com/vinta/hal-9000",
  "license": "MIT",
  "keywords": [
    "git",
    "commit",
    "stash",
    "hunk",
    "over-engineering",
    "yagni",
    "simplify",
    "best-practices",
    "research",
    "blindspot",
    "unknowns",
    "simple-english",
    "global-english",
    "write-like-me",
    "writing-voice",
    "technical-writing",
    "audit",
    "claude-settings",
    "env-vars",
    "refactor",
    "claude-md",
    "agents-md"
  ]
}

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.

2d ago First seen · 48 lines scan A 59e387ce6597

Subscribe to this mod's changes

skills is a plugin published in the GitHub repository vinta/hal-9000 (125 stars, last pushed 4d 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.

DevOps and cloud Git and workflow Writing and docs ansible-playbooks docker kubernetes macos nodejs python

skills

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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