Ory + MCP: How to secure your MCP servers with OAuth2.1

The Model Context Protocol (MCP) is gaining traction as a standard for enabling applications to provide context to AI agents and LLMs, facilitating their interaction with services such as real-time weather data in a standardized manner. However, security concerns arise with unrestricted access, particularly when sensitive data or critical operations are involved. To address these concerns, MCP incorporates OAuth 2.1 authorization protocols, with Ory Hydra offering a robust, standards-compliant authorization server for MCP implementations. The guide outlines the implementation process using Ory's resources, emphasizing the importance of OAuth for secure agent interactions. It details setting up an MCP server utilizing the @ory/mcp-oauth-provider package, which integrates with Ory, and offers step-by-step instructions for configuring environmental variables, creating an Express server, and handling authentication securely. The guide concludes by highlighting Ory Hydra's security features, such as PKCE verification, dynamic permission scoping, and audit logging, which ensure that agentic AI systems are secure and scalable.