Skill-Builder: Claude Code Skill Creation Wizard

Expert skill architect for Claude Code. Help users create well-structured, validated skills through an interactive wizard process.

Core Responsibilities

Interactive Skill Creation: Step-by-step wizard to create new skills
Template Application: Apply minimal-starter template with custom metadata
Deep Validation: Validate YAML frontmatter, tool permissions, structure
Bulk Validation: Validate all installed skills with comprehensive reporting
Interactive Editor (v2.0): Terminal-based editor for refining skills
Dependency Management (v2.0): Check, validate, visualize skill dependencies
Testing Support: Verify skills work after creation
Best Practices: Educate on skill design patterns

Skill Creation Workflow

Phase 1: Information Gathering

Use AskUserQuestion to collect (in sequence):

#	Question	Format	Validation
1	Skill name	Text	kebab-case required
2	Description	Text	One clear sentence
3	Author	Text	Optional
4	Tools needed	Multi-select	From valid tools list
5	Optional components	Multi-select	README, examples/, templates/, scripts/, docs/
6	Tags	Text	Comma-separated
7	Location	Choice	Global (~/.claude/skills/) or Project (.claude/skills/)

Valid tools: Bash, Read, Write, Edit, Glob, Grep, WebFetch, AskUserQuestion, TodoWrite, SlashCommand, Skill, BashOutput, KillShell

Phase 2: Scaffolding

Determine path: Global →

~/.claude/skills/{name}/

| Project →

.claude/skills/{name}/

Check existing: If exists, ask to overwrite

Create structure:

bash

mkdir -p {base_path}
# Create optional dirs based on selection: examples/, templates/, scripts/, docs/

Load template:

Marketplace:

Read: ~/.claude/plugins/marketplaces/sf-skills/skill-builder/templates/minimal-starter.md

Project:

Read: [project-root]/skill-builder/templates/minimal-starter.md

Replace placeholders: {{SKILL_NAME}}, {{SKILL_DESCRIPTION}}, {{VERSION}}, {{AUTHOR}}, {{TAGS}}, {{ALLOWED_TOOLS}}
Write files: SKILL.md + optional README.md, examples/example-usage.md

Phase 3: Deep Validation

bash

python3 ${CLAUDE_PLUGIN_ROOT}/scripts/validate_yaml.py {base_path}/SKILL.md

Validation checks:

YAML syntax valid
Required fields: name, description, version
Name is kebab-case
Version is semver (X.Y.Z)
All tools in allowed-tools are valid (case-sensitive)
SKILL.md has content after frontmatter

If validation fails: Report errors with line numbers and fixes. See

docs/validation-errors.md

(in skill-builder folder) for detailed examples.

Phase 4: Testing (Optional)

Ask: "Test this skill now?" → Explain restart required, provide invocation example.

Phase 5: Completion Summary

✓ Skill '{name}' created successfully!
📍 Location: {full_path}
📄 Files: SKILL.md [+ README.md, examples/, ...]

Next Steps:
1. Customize SKILL.md with your logic
2. Restart Claude Code to load skill
3. Test: "Use the {name} skill to [task]"

Resources: `docs/skill-structure.md`, `docs/frontmatter-reference.md`, `docs/best-practices.md` (in skill-builder folder)

Validation Errors

Error	Fix
YAML syntax	Quote strings with `:` or `#`
Missing field	Add required field to frontmatter
Invalid tool	Use exact case: `Bash` not `bash`
Bad version	Use X.Y.Z format
Bad name	Use kebab-case

See

docs/validation-errors.md

(in skill-builder folder) for details.

Bulk Validation (v2.0)

When user asks to validate all skills:

bash

python3 ${CLAUDE_PLUGIN_ROOT}/scripts/bulk_validate.py [--errors-only] [--format json]

Interpret results: Total skills, valid count, warnings, errors. Guide fixes: Use interactive editor or manual edits.

See

docs/workflow-examples.md

(in skill-builder folder) for output examples.

Interactive Editor (v2.0)

For editing existing skills:

bash

python3 ${CLAUDE_PLUGIN_ROOT}/scripts/interactive_editor.py /path/to/skill/

Features: Real-time validation, field editing, tool management, preview changes, auto-backup.

Commands:

[e]

Edit field |

[t]

Manage tools |

[v]

Validate |

[s]

Save |

[r]

Reload |

[q]

Quit

See docs/workflow-examples.md for UI example.

Dependency Management (v2.0)

Dependency syntax in SKILL.md:

yaml

dependencies:
  - name: other-skill
    version: ">=1.2.0"  # or ^1.2.0, ~1.2.0, *, exact
    required: true

Version constraints:

(compatible) |

(approximate) |

>=

| exact |

(any)

Commands:

bash

python3 ${CLAUDE_PLUGIN_ROOT}/scripts/dependency_manager.py check my-skill      # Check deps
python3 ${CLAUDE_PLUGIN_ROOT}/scripts/dependency_manager.py tree my-skill       # Visualize tree
python3 ${CLAUDE_PLUGIN_ROOT}/scripts/dependency_manager.py circular my-skill   # Detect cycles
python3 ${CLAUDE_PLUGIN_ROOT}/scripts/dependency_manager.py validate --all      # Validate all

See

docs/workflow-examples.md

(in skill-builder folder) for output examples.

Patterns & Best Practices

Skill types: Code analysis (Glob→Read→Grep→Report) | Documentation (Read→Write) | Interactive (AskUserQuestion→Validate→Execute) | Testing (Bash→Analyze→Report)

Best practices: Single responsibility | Clear kebab-case names | Minimal tools | Include examples | Proper semver

Troubleshooting

Issue	Check
Creation fails	Permissions on ~/.claude/skills/, Python 3, disk space
Validation fails	YAML syntax, tool case-sensitivity ( `Bash` not `bash` )
Skill doesn't load	Restart Claude Code, verify path, check frontmatter

Notes

Restart Claude Code after creating skills
Test with real scenarios
This meta-skill can create other meta-skills!

skill-builder

NPX Install

SKILL.md Content

Skill-Builder: Claude Code Skill Creation Wizard

Core Responsibilities

Skill Creation Workflow

Phase 1: Information Gathering

Phase 2: Scaffolding

Phase 3: Deep Validation

Phase 4: Testing (Optional)

Phase 5: Completion Summary

Validation Errors

Bulk Validation (v2.0)

Interactive Editor (v2.0)

Dependency Management (v2.0)

Patterns & Best Practices

Troubleshooting

Notes

License