Dev.to
7/10/2026

What is OpenIddict: the .NET framework developers choose for OAuth 2.0 and OpenID Connect
Short summary
OpenIddict is an open-source, OpenID Foundation-certified library for ASP.NET Core that adds a fully compliant OAuth 2.0 and OpenID Connect authorization server to your application. It integrates with ASP.NET Core Identity and Entity Framework Core, supporting all major grant types including Authorization Code with PKCE, Client Credentials, and Refresh Token. While it provides complete flexibility and control, developers remain responsible for proper production configuration such as certificate management and endpoint security.
- •OpenIddict is an open-source OAuth 2.0 / OpenID Connect authorization server library for ASP.NET Core, certified by the OpenID Foundation
- •Integrates with ASP.NET Core Identity and EF Core, supporting all major grant types and standard endpoints
- •Flexibility means developers must handle production concerns like certificates, token lifetimes, and client registration themselves
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