Sessions Are Dead. Now What Breaks?

MCP Dev Summit Toronto 2026

Oct 5, 2026 · 11:00–11:25 · Timezone not confirmed

On July 28, the MCP spec removed server-side sessions entirely. If you maintain an MCP server, this probably already broke something for you (or it will when your users update their clients). I spent three weeks going through the 2026-07-28 spec diff line by line and mapping every change against the tool handler patterns in 100+ MCP servers I'd already audited with MCPeek. The short version: SSE streaming is gone (replaced by Streamable HTTP, which handles long-running tool calls differently), servers can no longer hold conversation context between requests, and OAuth token binding without session affinity is genuinely harder than the spec changelog makes it sound. That last one is the thing I see nobody talking about yet. This talk is the migration guide I had to write for myself. Each breaking change comes with the code diff in both the TypeScript and Python SDKs and the migration path I'd recommend.

Session status: scheduled

Room: Giovanni

Track: MCP Protocol in Depth

Level: Intermediate

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Speakers and their event affiliations

• Akash Sathish

  Affiliation at this event: Sahaj Software

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In person · The Conference Centre at the University of Toronto, Toronto, Ontario, Canada

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