Skill Developer
If you're building Claude Code skills, this walks you through the whole setup: creating SKILL.md files, configuring skill-rules.json with trigger patterns, and using the two-hook architecture for activation. It covers guardrail skills that block actions until activated versus domain skills that just suggest themselves, plus session tracking so Claude doesn't nag you repeatedly. The 500-line rule and progressive disclosure pattern keep skills focused. Honestly most useful if you're already neck-deep in Claude Code customization and need the reference for trigger patterns and enforcement levels. Includes actual test commands and a JSON schema, which beats hunting through docs.
- skills.sh installs
- 670
- GitHub stars
- 43.1K
- last updated
- Jul 14, 2026
Install
$ npx -y skills add sickn33/antigravity-awesome-skills --skill skill-developer --agent claude-codeInstalls into .claude/skills of the current project.
Files
Skill Developer Guide
Purpose
Comprehensive guide for creating and managing skills in Claude Code with auto-activation system, using an illustrative custom hook architecture and concise progressive disclosure and progressive disclosure pattern.
When to Use This Skill
Automatically activates when you mention:
- Creating or adding skills
- Modifying skill triggers or rules
- Understanding how skill activation works
- Debugging skill activation issues
- Working with skill-rules.json
- Hook system mechanics
- Claude Code best practices
- Progressive disclosure
- YAML frontmatter
- 500-line rule
Scope and availability
The hooks, wrappers and skill-rules.json described here are a custom example system, not built-in Claude Code features and not bundled in this tree. Confirm their presence and audit their implementation before running examples. Use pinned local dependencies, preserve existing configuration and obtain authorization before registering arbitrary-code hooks. Hook suggestions and once-per-session reminders are not security enforcement or proof of skill invocation.
System Overview
Two-Hook Architecture
Sponsors
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- Repository
- github.com/sickn33/antigravity-awesome-skills
- First seen
- May 16, 2026
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