Master MCP server security with this guide on Auth0 FGA and TypeScript. Learn to filter LLM tools and documents based on user permissions and ReBAC logic.

Auth0's platform is a  identity management solution, offering insights into authentication, authorization, and user management for web and mobile applications. Through articles, tutorials, and documentation, Auth0 offers insights into securing applications with modern identity protocols like OAuth and OpenID Connect. Developers can learn about implementing single sign-on (SSO), multi-factor authentication (MFA), and user authorization policies to enhance application security and user experience.

Auth0

A step-by-step guide to building a secure MCP server in TypeScript using FastMCP, Auth0 for OAuth 2.0 authentication, and Auth0 FGA (OpenFGA) for fine-grained authorization. The tutorial covers setting up three MCP tools (whoami, datetime, get_documents), defining a relationship-based authorization model with roles and groups, filtering tool visibility per user, and controlling access to private documents based on FGA permissions. Includes configuration of Auth0 API, FGA store, CLI-based model deployment, and testing with MCP Inspector.

Protect Your MCP Tools With Auth0 FGA in TypeScript

Implementing the MCP Server in TypeScript

Testing Your MCP Server Using MCP Inspector

Creating an API in Auth0 to Represent Your MCP Server