Agent skill

Skill Creator

by swarmclawai in swarmclawai/swarmclaw

Create, edit, improve, or audit skills for SwarmClaw agents.

MITAuto-check passedAgent Workflows

Install Skill Creator

skills CLI
$ npx skills add swarmclawai/swarmclaw --skill skill-creator -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install swarmclawai/swarmclaw skill-creator --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/swarmclawai/swarmclaw.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/skill-creator .claude/skills/skill-creator && rm -rf skills-src

Use ~/.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/

Facts

Skill name
skill-creator
GitHub stars
689
Token cost
~1.4k tokens
SKILL.md length
587 words
Files
3 (incl. scripts)
Skills in repo
12
Repo updated
First seen
Licence
MIT

At a glance

Create, edit, improve, or audit skills for SwarmClaw agents.

  • Works in 6 steps: Understanding with Concrete Examples → Planning Reusable Contents → Initializing the Skill → …
  • Creating a new skill from scratch
  • SKILL.md covers About Skills, Core Principles, Skill Creation Process and Progressive Disclosure
  • Runs Python scripts from its folder; calls python3

What it does

Skill Creator is an agent skill from swarmclawai/swarmclaw. Create, edit, improve, or audit skills for SwarmClaw agents. Use when creating a new skill from scratch or when asked to improve, review, audit, tidy up, or clean up an existing skill or SKILL.md file. Also use when editing or restructuring a skill directory. Triggers on phrases like "create a skill", "author a skill", "tidy up a skill", "improve this skill", "review the skill", "clean up the skill", "audit the skill".

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including scripts (for example `scripts/init_skill.py` and `scripts/quick_validate.py`).

It sits in Agent Workflows, covering Skill authoring. It works with Model Context Protocol. The repository describes itself as: Open-source self-hosted AI agent runtime and multi-agent framework for autonomous agent swarms. Agent memory, MCP tools, schedules, delegation, and 23+ LLM providers (Claude… The licence is MIT.

When your agent uses it

  • Creating a new skill from scratch
  • Asked to improve
  • Clean up an existing skill
  • Restructuring a skill directory

Example prompts

  • “create a skill”
  • “author a skill”
  • “tidy up a skill”
  • “/skill-creator”

Requirements

  • Python 3

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Understanding with Concrete Examples
  2. Planning Reusable Contents
  3. Initializing the Skill
  4. Edit the Skill
  5. Validate the Skill
  6. Iterate

What it can do on your machine

Read from SKILL.md and the folder at commit ed38ba5. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 2 files in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python3

    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 1.4k tokens when it runs. Until then it costs about 109 tokens; SKILL.md has 587 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~109
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k

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 passed

The automated check found no risky patterns in SKILL.md.

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); the scripts in this folder are not scanned.

SKILL.md

The full file from swarmclawai/swarmclaw at commit ed38ba5, republished under its MIT licence (© swarmclawai). 587 words, ~1,427 tokens.

Download SKILL.mdSave it as .claude/skills/skill-creator/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
skill-creator
description
Create, edit, improve, or audit skills for SwarmClaw agents. Use when creating a new skill from scratch or when asked to improve, review, audit, tidy up, or clean up an existing skill or SKILL.md file. Also use when editing or restructuring a skill directory. Triggers on phrases like "create a skill", "author a skill", "tidy up a skill", "improve this skill", "review the skill", "clean up the skill", "audit the skill".

Skill Creator

Guidance for creating effective skills that extend SwarmClaw agent capabilities.

About Skills

Skills are modular, self-contained packages that provide specialized knowledge, workflows, and tools. They transform a general-purpose agent into a specialized one equipped with procedural knowledge that no model can fully possess.

What Skills Provide
  1. Specialized workflows — multi-step procedures for specific domains
  2. Tool integrations — instructions for working with specific file formats or APIs
  3. Domain expertise — company-specific knowledge, schemas, business logic
  4. Bundled resources — scripts, references, and assets for complex and repetitive tasks

Core Principles

Concise is Key

The context window is a shared resource. Only add context the agent doesn't already have. Challenge each piece of information: "Does the agent really need this explanation?" Prefer concise examples over verbose explanations.

Set Appropriate Degrees of Freedom
  • High freedom (text instructions): Multiple valid approaches, context-dependent decisions
  • Medium freedom (pseudocode/parameterized scripts): Preferred pattern exists, some variation OK
  • Low freedom (specific scripts): Fragile operations, consistency critical, exact sequence required
Anatomy of a Skill
skill-name/
├── SKILL.md (required)
│   ├── YAML frontmatter (name + description, required)
│   └── Markdown instructions (required)
└── Bundled Resources (optional)
    ├── scripts/      — Executable code (Python/Bash/etc.)
    ├── references/   — Documentation loaded into context as needed
    └── assets/       — Files used in output (templates, icons, fonts)
Frontmatter
  • name: Skill name (hyphen-case, lowercase)
  • description: Primary triggering mechanism. Include what the skill does AND when to use it. All "when to use" info goes here — not in the body.
Scripts (scripts/)

Executable code for tasks that require deterministic reliability or are repeatedly rewritten. Token efficient and may be executed without loading into context.

References (references/)

Documentation loaded as needed to inform the agent's process. Keep only essential instructions in SKILL.md; move detailed reference material here.

Assets (assets/)

Files not loaded into context but used in output (templates, images, fonts). Separates output resources from documentation.

What NOT to Include
  • README.md, CHANGELOG.md, INSTALLATION_GUIDE.md, or other auxiliary docs
  • Setup/testing procedures or user-facing documentation
  • Information the agent already knows from general training

Skill Creation Process

  1. Understand the skill with concrete examples
  2. Plan reusable contents (scripts, references, assets)
  3. Initialize the skill
  4. Edit the skill (implement resources, write SKILL.md)
  5. Validate the skill
  6. Iterate based on real usage
Skill Naming
  • Lowercase letters, digits, and hyphens only (hyphen-case)
  • Under 64 characters
  • Prefer short, verb-led phrases describing the action
  • Name the skill folder exactly after the skill name
Show full SKILL.md (235 more words)Show less
Step 1: Understanding with Concrete Examples

Ask the user clarifying questions:

  • What functionality should the skill support?
  • Can you give examples of how it would be used?
  • What would a user say that should trigger this skill?
Step 2: Planning Reusable Contents

Analyze each example to identify what scripts, references, and assets would be helpful:

  • Repeated code → scripts/ (e.g., scripts/rotate_pdf.py)
  • Boilerplate → assets/ (e.g., assets/hello-world/ template)
  • Domain knowledge → references/ (e.g., references/schema.md)
Step 3: Initializing the Skill

Use the bundled init script to create the directory structure:

bash
python3 {baseDir}/scripts/init_skill.py <skill-name> --path <output-directory> [--resources scripts,references,assets] [--examples]

Examples:

bash
python3 {baseDir}/scripts/init_skill.py my-skill --path skills
python3 {baseDir}/scripts/init_skill.py my-skill --path skills --resources scripts,references
Step 4: Edit the Skill

Write instructions that would help another agent instance execute tasks effectively. Include information that is beneficial and non-obvious.

Writing guidelines: Use imperative/infinitive form. Keep SKILL.md body under 500 lines.

Frontmatter description: Include both what the skill does and specific triggers for when to use it. This is the primary mechanism for skill selection.

Step 5: Validate the Skill

Run the validator to check structure and frontmatter:

bash
python3 {baseDir}/scripts/quick_validate.py <path/to/skill-folder>
Step 6: Iterate
  1. Use the skill on real tasks
  2. Notice struggles or inefficiencies
  3. Update SKILL.md or bundled resources
  4. Test again

Progressive Disclosure

Skills use a three-level loading system:

  1. Metadata (name + description) — always in context (~100 words)
  2. SKILL.md body — when skill triggers (<5k words)
  3. Bundled resources — as needed (unlimited, since scripts can be executed without reading)

Keep SKILL.md lean. Move detailed information to reference files and describe clearly when to read them.

© swarmclawai, MIT. 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 2 other files (scripts) in skills/skill-creator of swarmclawai/swarmclaw.

  • SKILL.md
  • scripts/init_skill.py
  • scripts/quick_validate.py

Open the folder on GitHubat commit ed38ba5

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 Creator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Skill Creator this skillswarmclawai/swarmclaw689—~1.4kAutomated safety check: PassMIT
Skill Seekers Builderyusufkaraaslan/Skill_Seekers15k—~760Automated safety check: PassMIT
Mistral Vibe Plugin Creatormistralai/mistral-vibe5.1k—~3.1kAutomated safety check: PassApache-2.0
Workflow Schema Tuningbreaking-brake/cc-wf-studio5.4k—~1.3kAutomated safety check: PassCustom licence
Skill Authoringuvwt/agentdock1.2k—~1.5kAutomated safety check: NotesApache-2.0
Scheduler Skill Creatoragenvoy/Agenvoy436—~3kAutomated safety check: PassAGPL-3.0

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Categories

Questions about Skill Creator

What does Skill Creator do?

Create, edit, improve, or audit skills for SwarmClaw agents. Skill Creator is an agent skill from swarmclawai/swarmclaw. Create, edit, improve, or audit skills for SwarmClaw agents.

When should I use Skill Creator?

Skill Creator fits situations like: creating a new skill from scratch; asked to improve; clean up an existing skill; restructuring a skill directory.

How do I install Skill Creator in Claude Code?

Run `npx skills add swarmclawai/swarmclaw --skill skill-creator -a claude-code`. Or copy the skill folder (skills/skill-creator in swarmclawai/swarmclaw) 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 swarmclawai/swarmclaw --skill skill-creator -a codex`. Or copy the skill folder (skills/skill-creator in swarmclawai/swarmclaw) 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 swarmclawai/swarmclaw --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?

Going by SKILL.md and its folder, Skill Creator needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.

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 no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Skill Creator use?

Skill Creator is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Skill Creator use?

About 1.4k tokens (SKILL.md is roughly 5.7k 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: Skill Seekers Builder (yusufkaraaslan/Skill_Seekers, 15k stars), Mistral Vibe Plugin Creator (mistralai/mistral-vibe, 5.1k stars), Workflow Schema Tuning (breaking-brake/cc-wf-studio, 5.4k stars) and Skill Authoring (uvwt/agentdock, 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?

swarmclawai (a GitHub organization) maintains it in swarmclawai/swarmclaw, which has 689 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on June 30, 2026.

Source: swarmclawai/swarmclaw on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.