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Spring AI supports Model Context Protocol (MCP), allowing AI models to interact with external tools. To secure MCP Servers, the latest MCP specification leverages the OAuth2 framework to provide robust security and permission management. Spring Security and Spring Authorization Server can be utilized to add OAuth2 capabilities to Spring MCP servers, ensuring only authenticated requests with access tokens are processed. The article covers integrating OAuth2 into a sample MCP Server, demonstrating token issuance and validation.

Securing Spring AI MCP servers with OAuth2