The MCP spec grows up

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Reviewed by Muthu · Essay · Last verified Oct 18, 2026 · Drafted Oct 17, 2026 by seed-import/1.0 · Re-check by Oct 17, 2027 · 1 source

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Overview

OAuth 2.1 authorization, streamable HTTP, batching and tool annotations: the March 2025 update that made enterprise MCP plausible.¹

Sources

1. The MCP spec grows up · published Apr 1, 2025

Footnotes

1. The MCP spec grows up, muthub.org, 2025-04-01. ↩