agent-skills

A catalog of Claude Code skills for using and enhancing Nullstone.

Each skill is a self-contained package of instructions (and optional scripts or references) that teaches Claude how to perform a specific Nullstone workflow — provisioning infrastructure, authoring modules, deploying apps, managing environments, and so on.

Repository layout

agent-skills/
├── README.md
└── skills/
    ├── _template/           # Starting point for new skills
    │   └── SKILL.md
    └── <skill-name>/
        ├── SKILL.md         # Required: frontmatter + instructions
        ├── scripts/         # Optional: helper scripts
        └── references/      # Optional: reference material loaded on demand

Every skill lives in its own directory under skills/ and must contain a SKILL.md with YAML frontmatter:

---
name: skill-name
description: One-line description of when Claude should invoke this skill.
---

# Skill body — instructions, examples, steps.

The description is what Claude reads to decide whether the skill applies to a given request. Be specific about the triggering situation.

Installing

These skills follow the Agent Skills open standard, so the same SKILL.md works unmodified in every tool that supports it (Claude Code, OpenAI Codex, Cursor, Gemini CLI, and ~30 others). Pick whichever channel fits your agent.

Claude Code (recommended)

This repo is published as a Claude Code plugin via its own marketplace, which gives you versioned install and upgrade across the whole catalog:

/plugin marketplace add nullstone-io/agent-skills
/plugin install nullstone-skills@nullstone

Skills are then namespaced as nullstone-skills:<skill-name> and invoked automatically by Claude Code when their description matches a user request. To upgrade after a new release, run /plugin marketplace update nullstone then /reload-plugins (or enable auto-update for the marketplace).

Any other tool (cross-tool installer)

skills.sh installs Agent Skills into Claude Code, Codex, Cursor, and other compatible agents from one command:

npx skills add nullstone-io/agent-skills

Manual

To pull in a single skill without any installer, copy its directory into the location your tool reads skills from — for Claude Code that is:

• ~/.claude/skills/<skill-name>/ — available in every session on your machine
• .claude/skills/<skill-name>/ — scoped to a single project

Contributing a skill

1. Copy skills/_template/ to skills/<your-skill-name>/.
2. Fill in the frontmatter (name, description) and the body.
3. Register the new skill directory in .claude-plugin/plugin.json under skills so it ships with the plugin. (_template/ is intentionally not registered.)
4. Keep the skill focused on one workflow. Split broad capabilities into multiple skills.
5. Put large reference material under references/ and load it on demand from SKILL.md, so the main body stays short.
6. Open a PR.