mcp-this

An MCP Server that dynamically exposes CLI/bash commands as tools and prompt templates through YAML configuration files.

mcp-this lets you turn any command-line tool into an MCP tool and create structured prompt templates that any MCP Client (e.g. Claude Desktop) can use. Instead of writing code, you simply define commands, prompts, and their parameters in YAML files, and the MCP Server makes them available to MCP Clients like Claude Desktop.

Core Value: Transform CLI commands into MCP tools and create reusable prompt templates using simple YAML configuration.

---

How It Works

Define tools (CLI commands) and prompts (AI templates) in YAML:

tools:
  get-current-time:
    description: |
      Display the current date and time in various formats.
      
      Examples:
      - get_current_time(format="iso") → 2025-05-18T17:17:39Z
      - get_current_time(format="readable") → Friday, May 18, 2025 5:17 PM
    execution:
      command: >-
        if [ ">" = "iso" ]; then 
          date -u +"%Y-%m-%dT%H:%M:%SZ"; 
        elif [ ">" = "readable" ]; then 
          date "+%A, %B %d, %Y %I:%M %p"; 
        else 
          echo "ISO: $(date -u +"%Y-%m-%dT%H:%M:%SZ")"; 
          echo "Readable: $(date "+%A, %B %d, %Y %I:%M %p")"; 
        fi
    parameters:
      format:
        description: "Time format: iso, readable, or empty for both"
        required: false

  system-info:
    description: Get basic system information
    execution:
      command: uname -a && echo "CPU: $(nproc) cores"
    parameters: {}

prompts:
  code-reviewer:
    description: Perform a thorough code review with best practices focus
    template: |
      Please review the following code with a focus on:
      - Code quality and best practices
      - Security vulnerabilities
      - Performance considerations
      {{#if focus_area}}- Special attention to: {{focus_area}}{{/if}}
      
      Code to review:
      {{code}}
      
      {{#if context}}Additional context: {{context}}{{/if}}
    arguments:
      code:
        description: Code to review
        required: true
      focus_area:
        description: Specific area to focus on (e.g., security, performance)
        required: false
      context:
        description: Additional context about the code
        required: false

Use in Claude Desktop:

{
  "mcpServers": {
    "mcp-this-custom": {
      "command": "uvx",
      "args": ["mcp-this", "--config-path", "/path/to/your-tools.yaml"]
    }
  }
}

That’s it! Claude can now:

• Execute your custom CLI tools (get-current-time, system-info)
• Use your structured prompt templates (code-reviewer with guided arguments)

---

Quick Start

1. Install uvx

# Install uv (includes uvx)
curl -LsSf https://astral.sh/uv/install.sh | sh

2. Create Your First Tool

Create my-tools.yaml:

tools:
  web-scraper: