Model Context Protocol Python SDK v1.29.0 adds Streamable HTTP request body limits
The Model Context Protocol (MCP) Python SDK has released version 1.29.0, introducing several updates to the v1.x maintenance line.
MCP Python SDK v2.0.0 stable release supports 2026 protocol revision
The Model Context Protocol (MCP) Python SDK has released its v2.0.0 stable version, which supports the 2026-07-28 revision of the Model Context Protocol while remaining compatible with earlier revisions from the same server.
ModelContextProtocol Python SDK v2.0.0rc1 release candidate
The ModelContextProtocol (MCP) Python SDK has released its first v2 release candidate, v2.0.0rc1. This pre-release is opt-in only and introduces significant API cleanup and alignment with the upcoming 2026-07-28 spec.
MCP Python SDK v2.0.0b2 adds client-side subscriptions and httpx2
The Model Context Protocol (MCP) Python SDK released version 2.0.0b2, introducing client-side subscription support and replacing the HTTP stack with httpx2.