Adding Custom Authentication to LangGraph

Learn how to implement custom authentication and access control in LangGraph applications. This comprehensive guide shows you how to integrate your own auth provider and implement granular access patterns without a separate backend server. We'll build a complete authentication system in three parts, covering everything from basic token validation to OAuth2 integration with Supabase. You'll learn how to use LangGraph's auth primitives to implement user-scoped conversations, role-based access control, and resource-level filtering. ⏰ Timestamps ----------- 00:00 Introduction & Overview 00:21 Project Setup & Initial Implementation 01:42 Authentication Basics - Auth Object - Request Validation - User Context 03:24 Authorization & Resource Control - Handler Implementation - Metadata Filtering - Access Patterns 06:09 Scoped Authorization - Resource-Level Control - Action-Specific Handlers 08:27 Production Integration - Supabase Setup - OAuth2 Flow - Token Validation 11:39 Testing & Validation 12:36 Conclusion & Next Steps 🔗 Resources ----------- 📚 Authentication Tutorial Series: Part 1: https://langchain-ai.github.io/langgraph/tutorials/auth/getting_started/ Part 2: https://langchain-ai.github.io/langgraph/tutorials/auth/resource_auth/ Part 3: https://langchain-ai.github.io/langgraph/tutorials/auth/add_auth_server/ 📖 Conceptual Guide: https://langchain-ai.github.io/langgraph/concepts/auth/ 💻 Full-Stack Template: https://github.com/langchain-ai/custom-auth #LangGraph #Authentication #OAuth2 #AIEngineering #WebDevelopment