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Learn how to implement secure access control for Model Context Protocol (MCP) servers in this comprehensive conference talk from Devoxx. Explore the OAuth2 framework as the standard authentication mechanism for MCP applications that enhance LLM capabilities with resources and tools. Discover the critical security considerations when exposing MCP servers to the public internet and understand why proper access control implementation is essential. Master the practical aspects of OAuth2 implementation beyond basic framework support, including selecting appropriate OAuth2 grant types, handling MCP client initialization during application startup without user presence, and implementing role-based access restrictions for administrative features. Examine the MCP specification's authorization requirements and their real-world implications for both server and client applications. Follow along with a hands-on implementation demonstration using Spring AI and the MCP Java SDK to see these security concepts applied in practice. Gain the knowledge needed to properly secure your MCP infrastructure while maintaining the enhanced functionality that makes LLM applications more powerful and versatile.
