Alibaba Cloud Native
Apr 30, 2025 · Cloud Native
What’s New in MCP 2025‑03‑26? A Deep Dive into OAuth 2.1, Streamable HTTP, JSON‑RPC Batching and AI‑Tool Enhancements
The MCP 2025‑03‑26 release replaces the implicit OAuth 2.0 flow with mandatory OAuth 2.1 PKCE, introduces a single‑endpoint Streamable HTTP protocol, enforces JSON‑RPC batch processing, adds multimodal audio support, tool metadata annotations and progress messaging, and outlines migration steps for developers and operators.
AI toolsAPIJSON-RPC
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