Tech Ocean
Jul 29, 2026 · Backend Development
MCP Spec Finalized: Major SDK Overhaul and Version Locking Before Installation
The new MCP 2026-07-28 specification replaces the stateful session model with a stateless request‑response protocol, introduces nine breaking changes, splits the TypeScript SDK into multiple packages, upgrades the Python SDK to 2.0.0, and forces developers to lock SDK versions and verify gateway header handling before deployment.
MCPPythonSDK migration
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