MCPInstall

skill-creator

Creates new AI agent skills following the Agent Skills spec. Trigger: When user asks to create a new skill, add agent instructions, or document patterns for AI.

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/gentleman-programming/gentleman-skills --skill skill-creator
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads skill-creator automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

When to Create a Skill

Create a skill when:

  • A pattern is used repeatedly and AI needs guidance
  • Project-specific conventions differ from generic best practices
  • Complex workflows need step-by-step instructions
  • Decision trees help AI choose the right approach

Don't create a skill when:

  • Documentation already exists (create a reference instead)
  • Pattern is trivial or self-explanatory
  • It's a one-off task

Skill Structure

skills/{skill-name}/
├── SKILL.md              # Required - main skill file
├── assets/               # Optional - templates, schemas, examples
│   ├── template.py
│   └── schema.json
└── references/           # Optional - links to local docs
    └── docs.md           # Points to docs/developer-guide/*.mdx

SKILL.md Template

---
name: {skill-name}
description: >
  {One-line description of what this skill does}.
  Trigger: {When the AI should load this skill}.
license: Apache-2.0
metadata:
  author: gentleman-programming
  version: "1.0"
---

## When to Use

{Bullet points of when to use this skill}

## Critical Patterns

{The most important rules - what AI MUST know}

## Code Examples

{Minimal, focused examples}

## Commands

```bash
{Common commands}

Resources

  • Templates: See assets/ for {description}
  • Documentation: See references/ for local docs

---

## Naming Conventions

| Type | Pattern | Examples |
|------|---------|----------|
| Generic skill | `{technology}` | `pytest`, `playwright`, `typescript` |
| Prowler-specific | `prowler-{component}` | `prowler-api`, `prowler-ui`, `prowler-sdk-check` |
| Testing skill | `prowler-test-{component}` | `prowler-test-sdk`, `prowler-test-api` |
| Workflow skill | `{action}-{target}` | `skill-creator`, `jira-task` |

---

## Decision: assets/ vs references/

Need code templates? → assets/ Need JSON schemas? → assets/ Need example configs? → assets/ Link to existing docs? → references/ Link to external guides? → references/ (with local path)


**Key Rule**: `references/` should point to LOCAL files (`docs/developer-guide/*.mdx`), not web URLs.

---

## Decision: Prowler-Specific vs Generic

Patterns apply to ANY project? → Generic skill (e.g., pytest, typescript) Patterns are Prowler-specific? → prowler-{name} skill Generic skill needs Prowler info? → Add references/ pointing to Prowler docs


---

## Frontmatter Fields

| Field | Required | Description |
|-------|----------|-------------|
| `name` | Yes | Skill identifier (lowercase, hyphens) |
| `description` | Yes | What + Trigger in one block |
| `license` | Yes | Always `Apache-2.0` for Prowler |
| `metadata.author` | Yes | `gentleman-programming` |
| `metadata.version` | Yes | Semantic version as string |

---

## Content Guidelines

### DO
- Start with the most critical patterns
- Use tables for decision trees
- Keep code examples minimal and focused
- Include Commands section with copy-paste commands

### DON'T
- Add Keywords section (agent searches frontmatter, not body)
- Duplicate content from existing docs (reference instead)
- Include lengthy explanations (link to docs)
- Add troubleshooting sections (keep focused)
- Use web URLs in references (use local paths)

---

## Registering the Skill

After creating the skill, add it to `AGENTS.md`:

```markdown
| `{skill-name}` | {Description} | [SKILL.md](skills/{skill-name}/SKILL.md) |

Checklist Before Creating

  • Skill doesn't already exist (check skills/)
  • Pattern is reusable (not one-off)
  • Name follows conventions
  • Frontmatter is complete (description includes trigger keywords)
  • Critical patterns are clear
  • Code examples are minimal
  • Commands section exists
  • Added to AGENTS.md

Resources

  • Templates: See assets/ for SKILL.md template

FAQ

What does the skill-creator skill do?

Creates new AI agent skills following the Agent Skills spec. Trigger: When user asks to create a new skill, add agent instructions, or document patterns for AI.

How do I install skill-creator?

Run npx skills add https://github.com/gentleman-programming/gentleman-skills --skill skill-creator in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/skill-creator/ (personal) or .claude/skills/skill-creator/ (project).

Which AI agents can use skill-creator?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is skill-creator safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains skill-creator?

It is published by gentleman-programming in gentleman-programming/gentleman-skills. It has 167 recorded installs.

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