Guide · Agent skill
How to use the Skill Creator agent skill (skill-creator)
Updated · written with AI from the project's own documentation and checked against our catalogue data
Skill Creator is an agent skill that teaches an agent how to build other agent skills. A skill is a small folder built around a SKILL.md instruction file, with optional scripts, reference notes and templates. This guide explains what the skill does, how to install it, how to trigger it with plain requests, and what it needs to run, so you can use it to package your own know-how as a reusable skill.
Skill Creatoreigent-ai/eigent · Apache-2.0 Download the skill Quick start
- 1Download the ZIP. Get the skill-creator ZIP from this page.
- 2Unzip into a skills folder. Extract it into ~/.claude/skills/ for personal use, or into a project's .claude/skills/ folder.
- 3Or upload it in the Claude apps. Go to Settings → Capabilities → Skills and upload the skill there.
- 4Check the requirements. Make sure Python 3 and PyYAML are available if you plan to run the helper scripts.
- 5Ask for a new or updated skill. Describe the workflow or know-how you want to capture in plain language.
- 6Validate and package. Use the included quick_validate.py to check frontmatter, then package_skill.py to bundle the folder into a .skill file.
What does the Skill Creator skill make the agent do?
Once installed, the agent knows how to design and write skills. The skill's guidance covers how to keep instructions concise, when to use scripts instead of plain text, and how to lay out the skill folder. It describes the standard structure: a required SKILL.md with YAML frontmatter (name and description) and Markdown instructions, plus optional scripts/, references/ and assets/ folders.
The skill does not perform a domain task itself. It helps you build a skill that does one.
- Specialized workflows: multi-step procedures for a specific domain
- Tool integrations: instructions for specific file formats or APIs
- Domain expertise: company-specific knowledge, schemas and business logic
- Bundled resources: scripts, references and assets for complex or repetitive tasks
How do you install the Skill Creator skill?
Download the skill ZIP from this page. Then choose one of the two options below.
For a personal install, unzip the folder into ~/.claude/skills/. For a single project, unzip it into that project's .claude/skills/ folder.
In the Claude apps, you can instead upload the skill under Settings → Capabilities → Skills.
- Personal: ~/.claude/skills/
- Project: .claude/skills/ inside your project
- Claude apps: Settings → Capabilities → Skills, then upload
How do you trigger the skill with a natural request?
The agent decides whether to use a skill from its name and description, so you do not need a special command. Ask for what you want in plain language. The skill's description says it applies when you are creating a new skill or updating an existing one.
Name the outcome you want and, if you have it, the know-how you want to capture. Mention the folder or file names you expect so the agent knows what to produce.
- Create a new skill that packages our invoice-approval workflow.
- Update my existing skill so its SKILL.md is shorter and points to reference files.
- Turn this internal style guide into a skill with a references file.
- Review my skill's frontmatter and tell me what is missing.
What do the included helper scripts do?
The skill ships three Python helper scripts. init_skill.py creates a new skill from a template. quick_validate.py checks that the frontmatter is valid. package_skill.py bundles the skill folder into a .skill file.
The helpers need Python 3 and PyYAML, because quick_validate.py imports PyYAML. The scripts are the only part of this skill that runs code, so check the safety notes below before you use them.
- scripts/init_skill.py: create a new skill from a template
- scripts/quick_validate.py: check frontmatter validity (needs PyYAML)
- scripts/package_skill.py: bundle the folder into a .skill file
skill-name/
├── SKILL.md (required)
└── Bundled Resources (optional)
├── scripts/
├── references/
└── assets/What are good practices when the agent writes a skill?
The skill's main principle is that the agent is already capable, so each skill should add only context the agent does not already have. Keep SKILL.md under 500 lines and move detailed material into reference files, as long as SKILL.md says when to read each one.
Match the level of detail to the task. Use plain instructions where several approaches work, and scripts where a step is fragile or must be repeated exactly. The guidance also says not to add extra files such as README.md or CHANGELOG.md, since they add clutter.
- Keep the metadata (name and description) precise, because it decides when the skill triggers.
- Keep SKILL.md lean and reference detailed files from it.
- Use scripts for deterministic steps, text for flexible ones.
- Do not create README, changelog or installation guide files inside the skill.
What safety and environment limits should you know?
This skill runs scripts, so review them before running them in a sensitive environment. It does not use the network, according to its listing. The helper tools need Python 3 and PyYAML, so the skill will not help in an environment where running Python scripts is not allowed.
Ordinary users who only want to use an existing skill do not need this one.
- Runs scripts: yes (Python helpers)
- Uses network: no
- Requires: Python 3 and PyYAML
- Not suitable where running Python scripts is not allowed
What people use it for
- Packaging a team's internal approval workflow as a reusable skill
- Creating a skill with a references file that holds a company schema or policy
- Refactoring a long SKILL.md so the core workflow stays short and details move into reference files
- Checking an existing skill's frontmatter before sharing it
Frequently asked questions
Is the Skill Creator skill free to use?
The bundled LICENSE.txt contains the Apache License 2.0 text, and the listing gives the licence as Apache-2.0. However, the SKILL.md frontmatter says 'Proprietary. LICENSE.txt has complete terms', so read LICENSE.txt yourself and confirm the terms before reusing or redistributing the skill.
What do I need to run the Skill Creator skill?
You need Python 3 and PyYAML, since quick_validate.py imports PyYAML. The skill's listing says it runs scripts and does not use the network. Environments that do not allow Python scripts cannot use the helper tools.
Where do I put the skill folder to install it?
Unzip it into ~/.claude/skills/ for a personal install, or into .claude/skills/ inside a project for a project-specific install. In the Claude apps, you can upload it under Settings → Capabilities → Skills.
Do I need this skill to use other agent skills?
No. This skill is for building skills. Ordinary users who only want to use an existing skill do not need it.
What is a .skill file?
It is the bundled output of package_skill.py, which packages a skill folder into a single .skill file. The source does not describe the file's internal format beyond that.
Why won't quick_validate.py run on my machine?
The script imports PyYAML, so the most likely cause is that PyYAML is missing or Python 3 is not the interpreter being used. Install PyYAML for the Python 3 you are running and try again. The source does not list other troubleshooting steps.
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Our verdict
Choose Skill Creator if you want to package your own procedures, team workflows or schemas as agent skills and you can run Python 3 with PyYAML. Pick something else if you only want to use an existing skill, or if your environment does not allow running Python scripts.
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