The Ruby SDK provides the official library for building Model Context Protocol servers and clients in Ruby, implementing JSON-RPC 2.0 message handling with support for tool registration and invocation, prompt management, resource retrieval, and sampling capabilities. It offers multiple transport options including stdio and HTTP (SSE), enabling developers to create MCP servers that handle protocol initialization, capability negotiation, and server-to-client LLM completion requests. The SDK solves the problem of integrating Ruby applications with the Model Context Protocol by providing standardized abstractions for implementing protocol methods like tool listing, resource reading, and autocompletion suggestions.
claude mcp add --transport stdio modelcontextprotocol-ruby-sdk uvx ruby-sdk