Fetching from the wire…
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Infra2026-08-14 · source-backed
The Model Context Protocol blog details the change that lets servers deploy on serverless and edge. Extensions graduate from convention to a governed system with reverse-DNS identifiers, capability negotiation via extensions maps, and versioning independent of the core. Tasks becomes an official extension with a stateless lifecycle (tools/call returns a handle, client drives tasks/get/update/cancel), and MCP Apps ships server-rendered HTML in sandboxed iframes with templates declared up front so clients can prefetch and security-review before rendering. Claude already supports it including enterprise-managed auth and private network tunnels.
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Published July 28 after ten weeks validating a May 21 release candidate, replacing the bidirectional stateful protocol with request/response so servers deploy on serverless and edge. Adds a versioned Extensions framework, header-based routing, cacheable list results, authoriza...
The protocol that powers 14,000+ servers just made a breaking architectural change. If you run an MCP server, your migration clock started four days ago. The Model Context Protocol specification release candidate, locked May 21, removes the initialize/initialized handshake and...
The 2026-07-28 Model Context Protocol spec published today, and it removes two things every MCP server currently depends on: the initialize/initialized handshake and the Mcp-Session-Id header. Both are gone. Not deprecated. Gone from the core. (Model Context Protocol Blog) Wha...
The Model Context Protocol's 2026-07-28 revision is the biggest change since the protocol existed. The core is now stateless request/response instead of a bidirectional stateful session. Authorization aligns with OAuth 2.1 and OpenID Connect. MCP Apps and Tasks moved under a v...
Eighteen days. That's how long you have. The 2026-07-28 MCP specification release candidate removes the session concept from the protocol layer entirely. The initialize / initialized handshake is gone. The Mcp-Session-Id header is gone. Protocol version, client identity, and c...
- Source: Model Context Protocol Blog - Date: 2026-01-26 The biggest MCP evolution since launch. Tools can now return interactive UI components — dashboards, forms, visualizations — that render directly in conversation via sandboxed iframes. Already supported in Claude, ChatGP...
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