The official Ruby SDK for the Model Context Protocol servers and clients.
Latest release v1.9.0 · 3 Nov 2026
2 files for Codex, OpenCode and Claude Code: ruby-sdk AGENTS.md, ruby-sdk CLAUDE.md — 1,394 tokens loaded in every session.
AGENTS.md A 1,389 tok CLAUDE.md A 5 tok These files are modelcontextprotocol/ruby-sdk's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.