This article explains the authentication and authorization processes for Model Context Protocol (MCP) servers, focusing on the transport methods used, particularly standard input/output and streamable HTTP. It details how to secure remote MCP servers using OAuth 2.1 and emphasizes the importance of proper authorization for different types of clients.

WorkOS offers a streamlined solution for implementing secure authentication with its MCP servers using OAuth 2.1 flows, making it easy for developers to integrate complex protocols. The platform provides essential tools, documentation, and community support to help users quickly launch their apps without the need for user migration. With AuthKit, developers can focus on building their applications while it handles the intricacies of OAuth.

The guide details how to secure an MCP server using OAuth 2.1 and PKCE, emphasizing the importance of authentication and authorization in managing access for AI-powered applications. It covers the architecture of MCP, the evolution of its authentication methods, and the implementation of secure token handling and role-based access control. By following the guide, developers can create systems that are both secure and user-friendly.