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Plugin Master

Complete Claude Code plugin development system. PROACTIVELY activate when users want to: (1) Create/build plugins with 2025 features, (2) Add skills/commands/agents/hooks, (3) Validate plugin structure, (4) Publish to marketplace, (5) Get plugin development guidance. Provides: agent-first design patterns, progressive disclosure skills, hook automation, MCP integration, marketplace publishing. Incl

by @josiahsiegel 4 skills

Skills in this plugin

4
  1. ▌
    Hook Development · josiahsiegel
    Canonical guide to authoring Claude Code hooks, both prompt-based and command-based. PROACTIVELY activate for: (1) creating a hook, (2) adding PreToolUse or PostToolUse hooks, (3) validating tool use, (4) implementing prompt-based hooks, (5) blocking dangerous commands, (6) event-driven automation, (7) configuring hooks.json, (8) using ${CLAUDE_PLUGIN_ROOT}, (9) hook matchers and filtering, (10) debugging hooks that do not fire. Provides: hooks.json schema, event reference, security guidance, and examples.
    0 installs
  2. ▌
    Agent Development · josiahsiegel bundle
    Canonical guide to authoring Claude Code agent frontmatter and system prompts. PROACTIVELY activate for: (1) creating a new agent, (2) adding an agent to a plugin, (3) writing agent frontmatter, (4) designing a system prompt, (5) configuring <example> trigger blocks, (6) restricting tools, (7) setting model inherit, (8) migrating deprecated agent true flag, (9) fixing "agent never triggers", (10) ensuring skills have agent trigger coverage. Provides: agent templates, lean-orchestrator pattern, and validation checklist.
    1 install
  3. ▌
    Skill Development · josiahsiegel bundle
    Canonical guide to authoring SKILL.md files for Claude Code plugin skills. PROACTIVELY activate for: (1) creating a new skill, (2) adding a skill to a plugin, (3) writing SKILL.md frontmatter, (4) fixing skills that never trigger, (5) organizing core vs references vs examples, (6) improving weak skill descriptions, (7) progressive disclosure design, (8) splitting oversized SKILL.md files, (9) imperative body style, (10) zero-frontmatter SKILL.md files, (11) removing boilerplate from YAML descriptions. Provides: skill template, trigger checklist, size rules, and validation process.
    1 install
  4. ▌
    Triggering Reliability · josiahsiegel bundle
    Catalog of common mistakes that break Claude Code agent and skill triggering, plus marketplace validation rules. PROACTIVELY activate for: (1) plugins installed but never trigger, (2) agents failing to route, (3) skills not appearing in discovery, (4) pre-release triggering audit, (5) migrating deprecated agent true flag, (6) zero-frontmatter SKILL.md files, (7) boilerplate in YAML descriptions, (8) abstract descriptions, (9) missing example blocks on fat agents above 2,500 words, (10) missing PROACTIVELY or Provides sections, (11) running validate_plugins.py, (12) auditing a plugin without contradicting earlier intentional refactors. Provides: anti-patterns, fixes, before/after examples, audit checklist, and validator rule index.
    0 installs