01 · ABOUT

What MCP Ruby SDK does

The official Ruby SDK for Model Context Protocol servers and clients.

Why teams reach for it: The official Ruby SDK for the Model Context Protocol, implementing both server and client functionality for JSON-RPC 2.0 communication between LLM applications and context providers - the first-party option for putting MCP into a Ruby or Rails application.

LibraryOpen SourceRubyMCP Server & Client
02 · TECHNICAL SPECIFICATIONS

How MCP Ruby SDK compares

Fields the vendor doesn't document are left blank here rather than guessed — a blank means nothing verified, not a "no."

Language
Ruby
Official Sdk
Yes
Spec Revision Implemented
2026-07-28
Transports
stdio, Streamable HTTP
Builds Servers
Yes
Builds Clients
Yes
Auth Helpers
None
Generates From Openapi
No
Mcp Apps Support
Yes
Server Composition
No
Package Registry
RubyGems
Package Name
mcp
03 · NEW TO MCP?
What will you use to implement the protocol?

A framework or SDK gives developers pre-built code for creating an MCP server or client, so they don't have to implement the protocol from scratch.