Our review
Creates a new Claude Code skill with a code scaffold and associated tests.
Strengths
- Automates the creation of skill structure and test files.
- Offers options for invocability, scope (local/global), and tests.
- Guides the user step by step with interactive questions.
Limitations
- Requires the skill-builder framework to be installed.
- Created files contain placeholders that must be manually filled.
When you want to create a new structured Claude Code skill with tests.
If you prefer to write the skill entirely by hand without automation.
Security analysis
SafeThe skill runs a predefined scaffold script from a trusted location (~/.claude/agents/skill-builder/scaffold.sh) with no destructive actions, no network access, and no handling of secrets. It is a benign file generation utility.
No concerns found
Examples
/new-skill/new-skill validate-json --globalname: new-skill description: Create a new Claude Code skill with tests user_invocable: true
New Skill Creator
Creates a new Claude Code skill with comprehensive tests using the skill-builder framework.
Instructions
-
Ask the user for skill details
- Skill name (kebab-case, e.g., validate-json, create-component)
- Should it be user-invocable? (can they use /skill-name)
- Is this for the current repo or global? (--local vs --global)
- Should we skip test creation? (usually no)
-
Run the scaffold tool
~/.claude/agents/skill-builder/scaffold.sh SKILL_NAME [flags]Flags:
--user-invocable- Make it a slash command--local- Create in current repo's .claude/skills/ (team-shared)--global- Create in ~/.claude/skills/ (default, personal)--no-tests- Skip test file creation
-
Show what was created
- List the files created
- Show the skill file path
- Show the test file path (if created)
- Explain next steps
-
Guide next steps
- Tell user to edit the [EDIT ME] placeholders
- Show how to run tests:
cd ~/.claude/agents/tests && ./run_tests.sh SKILL_NAME - If --local, remind to commit and share with team
Examples
<example> User: "/new-skill" Assistant: "I'll help you create a new skill. What would you like to call it? (use kebab-case like 'validate-json' or 'create-component')" User: "create-component" Assistant: "A few questions: 1. Should this be user-invocable as /create-component? (yes/no) 2. Is this for the current repo only, or global? (local/global) 3. Should I create tests? (yes/no - recommend yes)" User: "yes, local, yes" Assistant: [Runs scaffold.sh create-component --user-invocable --local] "✓ Created skill files: - .claude/skills/create-component.md - .claude/tests/integration/create_component/test_create_component.pyNext steps:
- Edit .claude/skills/create-component.md and fill in [EDIT ME] placeholders
- Update the test file with specific test cases
- Run tests: cd .claude/tests && pytest integration/create_component/ -v
- Commit and share with team: git add .claude/skills/ .claude/tests/" </example>
This is a global skill (available in all projects). Edit the skill file and fill in the [EDIT ME] placeholders." </example>
Important Notes
- Naming: Always use kebab-case (my-skill, not MySkill or my_skill)
- Local vs Global:
- Local: Repo-specific, shared with team via git
- Global: Personal, available everywhere
- User-invocable: Let users call it as /skill-name
- Tests: Always recommend creating tests
Tool Usage
Use Bash tool to run the scaffold script:
~/.claude/agents/skill-builder/scaffold.sh SKILL_NAME --user-invocable --local
Check current directory to determine if --local makes sense (are we in a git repo?).
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