Harness Agent Team Designer
revfactory/harness
Designs a project-specific agent harness: defines specialist agents, writes the skills they follow, picks an execution mode and model for each, and keeps the setup maintained.
Creates new AI agent skills following the Agent Skills spec.
Install Skill Creator
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill skill-creator -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Gentleman-Programming/Gentleman-Skills skill-creator --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/curated/skill-creator .claude/skills/skill-creator && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "skill-creator" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/skill-creator into .claude/skills/skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-creator", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/skill-creatorType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill skill-creator -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Gentleman-Programming/Gentleman-Skills skill-creator --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/curated/skill-creator .agents/skills/skill-creator && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "skill-creator" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/skill-creator into .agents/skills/skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-creator", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill skill-creator -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Gentleman-Programming/Gentleman-Skills skill-creator --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/curated/skill-creator .cursor/skills/skill-creator && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "skill-creator" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/skill-creator into .cursor/skills/skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-creator", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Gentleman-Programming/Gentleman-Skills.git --path curated/skill-creator--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill skill-creator -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Gentleman-Programming/Gentleman-Skills skill-creator --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/curated/skill-creator .gemini/skills/skill-creator && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "skill-creator" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/skill-creator into .gemini/skills/skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-creator", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Gentleman-Programming/Gentleman-Skills skill-creatorInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill skill-creator -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/curated/skill-creator .github/skills/skill-creator && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "skill-creator" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/skill-creator into .github/skills/skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-creator", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill skill-creator -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Gentleman-Programming/Gentleman-Skills skill-creator --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/curated/skill-creator .opencode/skills/skill-creator && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "skill-creator" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/skill-creator into .opencode/skills/skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-creator", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
skill-creator- GitHub stars
- 657
- Token cost
- ~1.1k tokens
- SKILL.md length
- 171 words
- Files
- 2 (incl. assets)
- Skills in repo
- 23
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Creates new AI agent skills following the Agent Skills spec.
- Asks to create a new skill
- SKILL.md covers When to Create a Skill, Skill Structure, SKILL.md Template and Resources, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Add agent instructions
What it does
Skill Creator is an agent skill from Gentleman-Programming/Gentleman-Skills. 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.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including assets (for example `assets/SKILL-TEMPLATE.md`).
It sits in Agent Workflows, covering Skill authoring and Agent instruction files. The repository describes itself as: Community-driven AI agent skills for Claude Code, OpenCode, and other AI assistants. Curated patterns and community contributions. The licence is Apache-2.0.
When your agent uses it
- Asks to create a new skill
- Add agent instructions
- Document patterns for AI
Example prompts
- “Use the skill-creator skill to create new AI agent skills following the Agent Skills spec”
- “/skill-creator”
Requirements
- Pre-approved tools (allowed-tools): Read, Edit, Write, Glob, Grep, Bash, WebFetch, WebSearch, Task
What it can do on your machine
Read from SKILL.md and the folder at commit c8036a3. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadEditWriteGlobGrepBashWebFetchWebSearchTask
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Skill Creator loads about 1.1k tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 171 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Edit, Write, Glob, Grep, Bash, WebFetch, WebSearch, Task
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from Gentleman-Programming/Gentleman-Skills at commit c8036a3, republished under its Apache-2.0 licence (© Gentleman-Programming). 171 words, ~1,067 tokens.
Download SKILL.mdSave it as
.claude/skills/skill-creator/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- skill-creator
- description
- 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.
- allowed-tools
- Read, Edit, Write, Glob, Grep, Bash, WebFetch, WebSearch, Task
- license
- Apache-2.0
- metadata.author
- gentleman-programming
- metadata.version
- 1.0
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/*.mdxSKILL.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
© Gentleman-Programming, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (assets) in curated/skill-creator of Gentleman-Programming/Gentleman-Skills.
- SKILL.md
- assets/SKILL-TEMPLATE.md
Open the folder on GitHubat commit c8036a3
Compare with similar skills
Skill Creator next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Skill Creator this skillGentleman-Programming/Gentleman-Skills | 657 | — | ~1.1k | Automated safety check: Notes | Apache-2.0 | |
| Harness Agent Team Designerrevfactory/harness | 9.1k | — | ~4.5k | Automated safety check: Pass | Apache-2.0 | |
| Harness Evolution Feedback Looprevfactory/harness | 9.1k | — | ~855 | Automated safety check: Pass | Apache-2.0 | |
| Skill Creatorccusage/ccusage | 19k | — | ~1.1k | Automated safety check: Pass | Custom licence | |
| ShellLM Skill Authorlaude-institute/headlong | 1.2k | — | ~1.3k | Automated safety check: Pass | Apache-2.0 | |
| Authoring Skillsvercel/next.js | 143k | — | ~1k | Automated safety check: Pass | MIT |
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ShellLM Skill Author
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Scaffolds new ShellLM skills with the right frontmatter, directory layout and agent-facing writing style, so an agent can extend its own capabilities.
- Official
Authoring Skills
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Guides writing a new agent skill: when one is warranted, the required folder layout and frontmatter, section order and size limits, with a bundled style guide.
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Related
Categories
Questions about Skill Creator
What does Skill Creator do?
Creates new AI agent skills following the Agent Skills spec. Skill Creator is an agent skill from Gentleman-Programming/Gentleman-Skills. Creates new AI agent skills following the Agent Skills spec.
When should I use Skill Creator?
Skill Creator fits situations like: asks to create a new skill; add agent instructions; document patterns for AI.
How do I install Skill Creator in Claude Code?
Run `npx skills add Gentleman-Programming/Gentleman-Skills --skill skill-creator -a claude-code`. Or copy the skill folder (curated/skill-creator in Gentleman-Programming/Gentleman-Skills) into .claude/skills/skill-creator in your project. Claude Code loads it when a task matches its description.
How do I install Skill Creator in Codex?
Run `npx skills add Gentleman-Programming/Gentleman-Skills --skill skill-creator -a codex`. Or copy the skill folder (curated/skill-creator in Gentleman-Programming/Gentleman-Skills) into .agents/skills/skill-creator in your project. Codex loads it when a task matches its description.
Can I use Skill Creator in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Gentleman-Programming/Gentleman-Skills --skill skill-creator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/skill-creator, .gemini/skills/skill-creator, .github/skills/skill-creator and .opencode/skills/skill-creator in your project.
What does Skill Creator need to run?
SKILL.md names no scripts, command-line tools or credentials: Skill Creator is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Edit, Write, Glob, Grep, Bash, WebFetch, WebSearch, Task.
Does Skill Creator access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Skill Creator safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Skill Creator use?
Skill Creator is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Skill Creator use?
About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Skill Creator?
Skills that share tags, products or a category with Skill Creator: Harness Agent Team Designer (revfactory/harness, 9.1k stars), Harness Evolution Feedback Loop (revfactory/harness, 9.1k stars), Skill Creator (ccusage/ccusage, 19k stars) and ShellLM Skill Author (laude-institute/headlong, 1.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Skill Creator?
Gentleman-Programming (a GitHub organization) maintains it in Gentleman-Programming/Gentleman-Skills, which has 657 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on March 28, 2026.
Source: Gentleman-Programming/Gentleman-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.