MCP Ruby Server Skeleton MCP Server

Connect MCP Ruby Server Skeleton to Claude, Cursor or any other MCP client and it stops being a tab you switch to. Experimental Ruby implementation of Model Context Protocol (MCP) - A starter server framework for trying out LLM integrations. The mcp ruby server skeleton mcp server is what makes that connection.

What the server does

This project is a Ruby implementation of a Model Context Protocol (MCP) server skeleton. It provides an interface that allows Large Language Models (LLMs) like Claude to call tools. The current implementation provides a tool that generates random numbers.

• get-random-number: Generates a random integer between 1 and a specified maximum value (defaults to 100)
• MCP protocol version 2024-11-05 compatibility
• Detailed logging for debugging
• JSON-RPC 2.0 compliant message handling

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

• initialize — Server initialization and protocol version negotiation
• Logs — Claude app logs related to MCP servers are available at: - macOS: ~/Library/Logs/Claude/mcp*.log - Windows: %APPDATA%\Claude\logs\mcp*.log
• Testing — When implementing new tools or server features, it's recommended to add tests. Testing should combine unit tests, integration tests, and end-to-end

Installation

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client.

Credentials and setup notes

• Ruby 3.0+

Where it fits

Among the monitoring and observability options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. MCP Ruby Server Skeleton's toolset — initialize, Logs, Testing — is a fair guide to whether it matches your workflow. It is maintained by bash0C7; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Worth knowing first

• It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
• Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.