AuthKit serves as the authorization server for MCP servers, facilitating secure access management for applications interacting with LLM-based clients. The guide details the integration process, emphasizing the importance of OAuth 2.0, token verification, and the use of metadata endpoints for dynamic client registration and interoperability. Developers can also utilize Standalone Connect to maintain their existing authentication systems while leveraging AuthKit’s infrastructure.

MCP authorization leverages several OAuth specifications to enable secure access to Large Language Models (LLMs) and their integration with remote services. The article outlines the progression from local-only MCP servers to a robust framework that includes dynamic registration, metadata discovery, and the use of PKCE for secure interactions. These advancements facilitate a seamless experience for users wishing to connect their LLMs with various tools without complex configurations.