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MCP 2026-07-28: 20 Breaking Changes and the Errors They Cause

This story is from 2026-08-25. It is preserved in the archive; the latest stories are on the live feed.

The Model Context Protocol shipped revision 2026-07-28 on 28 July 2026, and it is the largest change to the protocol since it launched. Sessions are gone. The initialize handshake is gone. Servers can no longer initiate requests at all. If you run an MCP server, the useful thing to know first is th…

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  1. 2026-08-25 06:38 · DEV Community — Machine Learning
    MCP 2026-07-28: 20 Breaking Changes and the Errors They Cause

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