The official Python SDK for Model Context Protocol servers and clients
modelcontextprotocol/python-sdk is the official Python toolkit for building Model Context Protocol servers and clients, which let large-language-model applications access standardized tools, data, and prompts. It is for developers creating MCP integrations, and the catalogue entries provide instructions, skills, and commands for working with it.
Latest release v2.3.0 · 2 Oct 2026
4 files for Claude Code, Codex and OpenCode: review-pr, test-quality, python-sdk AGENTS.md, python-sdk CLAUDE.md — 2,212 tokens loaded in every session.
AGENTS.md A 2,207 tok CLAUDE.md A 5 tok .claude/skills/test-quality/SKILL.md A 40 tok .claude/commands/review-pr.md A — These files are modelcontextprotocol/python-sdk's own configuration — they tell Claude Code, Codex and OpenCode 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.