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Handshake: which MCP clients will break your server after the 2026-07-28 spec split?

This story is from 2026-09-28. It is preserved in the archive; the latest stories are on the live feed.

This is a submission for the Sanity Challenge, Path One: Ship an Agent That Queries Real Content Will my MCP server still work with client X after the 2026-07-28 spec split? Paste a manifest into Handshake and you get a grid of verdicts, one per feature and client, each with its sources. The spec a…

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  1. 2026-09-28 08:32 · DEV Community — AI
    Handshake: which MCP clients will break your server after the 2026-07-28 spec split?

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