Alibaba Cloud Developer
May 9, 2025 · Information Security
What’s New in MCP 2025‑03‑26? Deep Dive into OAuth 2.1, Streamable HTTP, and JSON‑RPC Enhancements
The MCP 2025‑03‑26 release introduces mandatory OAuth 2.1 with PKCE, a single‑endpoint Streamable HTTP transport, required JSON‑RPC batch processing, richer tool metadata, structured progress notifications, audio multimodal support, and robust session management, all backed by extensive security hardening and performance gains.
API securityJSON-RPCMCP
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