MCP 2025-06-18 Update: Key Changes for Secure AI Model Integration

Table of Contents What Is MCP? Overview of the 2025‑06‑18 Revision Top 9 Core Changes Explained Dropping JSON‑RPC Batch Requests Introducing Structured Tool Output Classifying MCP as an OAuth Resource Server Mandating Resource Indicators in Clients Enhanced Security Guidance & Best Practices Elicitation: Interactive Data Collection Embedding Resource Links in Tool Responses Enforcing Protocol Version via HTTP Header Upgrading Lifecycle Operations from SHOULD to MUST Other Schema Updates at a Glance Smooth Migration Path to 2025‑06‑18 Frequently Asked Questions (FAQ) Conclusion: Embracing a More Secure, Extensible Protocol What Is MCP? Model Context Protocol (MCP) is an open‑source specification designed to …