Developed and delivered Enterprise Managed Authorization for non-interactive single sign-on in the modelcontextprotocol/csharp-sdk repository, focusing on secure authentication flows for enterprise environments. The work centered on implementing the Identity Assertion Grant, enabling users to authenticate once through an enterprise identity provider and access MCP servers without repeated login prompts. This feature aligned with SEP-990 standards and enhanced both user experience and security by centralizing identity management. Utilizing C#, .NET, and OAuth, the developer concentrated on robust API integration and backend development, laying the foundation for future identity provider integrations and supporting enterprise deployment requirements without addressing major bug fixes.