builder
Claude Code Builder
Expert guidance for creating Claude Code subagents, skills, slash commands, plugins, and plugin marketplaces.
Automatic Activation
This skill automatically activates when:
- Creating or editing
.claude/agents/*.mdfiles - Working with
.claude/commands/*.mdfiles - Developing
skills/*/SKILL.mdfiles - Configuring
.claude-plugin/plugin.jsonormarketplace.json - Working with files in
.claude/directories - Users ask "How do I create a Claude Code skill?"
- Users ask "How do I make a slash command?"
- Users mention "building a plugin" or "creating an agent"
- Discussing Claude Code extensibility and customization
When NOT to Use This Skill
More from sjungling/claude-plugins
ios-swift-expert
This skill should be used when the user asks to "build an iOS app", "create a SwiftUI view", "fix Xcode build errors", "implement Core Data", "design app architecture", or "optimize Swift performance". Automatically activates when working with .swift files, Xcode projects (.xcodeproj, .xcworkspace), SwiftUI interfaces, or Apple platform frameworks (UIKit, Core Data, Combine, WidgetKit, App Intents). Not for cross-platform frameworks (React Native, Flutter), non-Apple platforms, or backend server development.
73cli-ux-designer
This skill should be used when the user asks to "design a CLI", "improve command structure", "format terminal output", "review CLI usability", "design help text", or "add flags and arguments". Automatically activates when designing new CLI tools, improving command interfaces, formatting terminal output, or reviewing CLI usability. Not for GUI/web design, backend APIs, or shell scripting.
50git-bisect-debugging
This skill should be used when the user asks to "find which commit broke this", "debug a regression", "bisect to find the bug", or says "this used to work". Automatically activates for performance regressions, test failures that appeared recently, or any issue known to have worked at a previous commit. Can be invoked from systematic-debugging or used standalone. Not for general debugging without a known-good commit or regression history.
24obsidian-vault-manager
This skill should be used when the user asks to "manage Obsidian vault", "create a daily note", "move notes without breaking links", "search vault content", or "organize Obsidian notes". Automatically activates when working with Obsidian vaults, markdown notes with [[wiki-links]], daily notes, templates, or tags. Not for general markdown editing outside Obsidian vaults.
23technical-writer
This skill should be used when the user asks to "write a README", "create API documentation", "draft release notes", "write a tutorial", "structure documentation", or "review docs for clarity". Automatically activates when working with .md files in docs/ directories, README files, or when discussing documentation structure, style guides, or content organization. Not for creative/marketing writing, academic papers, code comments/docstrings, or internal chat.
19tmux-aware
This skill should be used when the user asks to "start a service in tmux", "check tmux pane output", "manage background processes", or "run a server in a pane". Automatically activates when running in a TMUX session (detected by SessionStart hook). Not for one-off commands that do not need a persistent pane.
14