mec-claude-agent-skills

Claude Plugins

A collection of plugins for Claude Code that extend Claude's capabilities with specialized skills and tools.

What are Claude Code Plugins?

Plugins extend Claude Code's functionality through custom commands, agents, hooks, Skills, and MCP servers. They're discoverable through marketplaces and shareable across teams and projects.

Plugins in this Repository

Skill Creator

A plugin that helps you create new Claude skills with specialized knowledge, workflows, and tools.

Features:

• Comprehensive skill creation guidance
• Automated skill initialization with templates
• Validation and packaging tools
• Best practices for skill design

Included Tools:

• init_skill.py - Generate new skill templates with proper structure
• package_skill.py - Validate and package skills for distribution
• quick_validate.py - Quick validation of skill structure and format

When to use: Creating skills for specialized domains, workflows, or bundled resources (scripts, references, assets).

Plugin Creator

A comprehensive plugin that helps you create complete Claude Code plugins with commands, agents, hooks, skills, and MCP integrations.

Features:

• Complete plugin creation guidance
• Support for all plugin components (commands, agents, hooks, skills, MCP)
• Automated plugin scaffolding
• Validation and packaging tools
• Best practices for plugin architecture

Included Tools:

• init_plugin.py - Generate new plugin templates with selected components
• package_plugin.py - Validate and package plugins for distribution

When to use: Creating custom slash commands, specialized agents, event hooks, or combining multiple components into a single distributable plugin.

Agentic Flow Builder

A production-grade plugin for building dynamic multi-agent workflows using ReAcTree hierarchical decomposition and Anthropic's proven workflow patterns.

Features:

• ReAcTree hierarchical agent tree for long-horizon task planning
• Business Rules Engine (BRE) for deterministic gate decisions
• Dynamic agent assignment with hot-reload support
• Dual memory system (episodic + working memory)
• Five workflow patterns (prompt chaining, routing, parallelization, orchestrator-workers, evaluator-optimizer)
• SQLite persistence with comprehensive audit trails
• Supports Claude models, Task agents, and external services

Core Components:

• database.py - SQLite schema and data access layer
• business_rules_engine.py - Production BRE for deterministic gates
• flow_orchestrator.py - Execution engine with all workflow patterns
• agent_registry.py - Dynamic agent discovery and assignment

When to use: Building complex multi-step workflows requiring deterministic decision gates, compliance auditing, or orchestrating multiple specialized agents.

Why use BRE for gates?

• Deterministic - Same input always produces same output (no AI variance)
• Auditable - Full transparency for compliance
• Reliable - No hallucinations or temperature inconsistency
• Fast - Sub-millisecond gate evaluation (no LLM calls)

Prompt Engineer

An expert prompt optimization skill that proactively helps improve prompts for LLMs and AI systems. Uses Opus for advanced reasoning about prompt design.

Features:

• Comprehensive prompt engineering techniques (CoT, few-shot, role-playing, etc.)
• Model-specific optimization (Claude, GPT, open source)
• Advanced patterns (Constitutional AI, Tree of Thoughts, prompt chaining)
• Always shows complete prompt text (never just describes)
• Evaluation framework with clear criteria
• Proactive assistance when AI/LLM usage is detected

When to use: Building AI features, optimizing agent performance, crafting system prompts, troubleshooting AI output quality, or establishing prompt standards.

Key principle: Always displays the complete prompt text in a clearly marked section - never just describes what a prompt should be.

Installation

Adding the Marketplace

1. Open Claude Code
2. Run the following command to add this marketplace:

   /plugin marketplace add https://github.com/P47Phoenix/Claude-Plugins
   

Installing Plugins

Once the marketplace is added, you can install either or both plugins:

Install Skill Creator:

/plugin install skill-creator

Install Plugin Creator:

/plugin install plugin-creator

Install Agentic Flow Builder:

/plugin install agentic-flow-builder

Install Prompt Engineer:

/plugin install prompt-engineer

Or use the interactive menu:

/plugin

Then browse and select the plugins you want from the list.

Using the Skill Creator

After installation, Claude will automatically use the skill creator when you want to create or modify skills.