---
title: Primitives in ASP.NET Core
author: guardrex
description: Discover articles on ASP.NET Core building blocks shared by framework extensions that you can use in your own code.
ms.author: riande
ms.date: 10/28/2017
uid: fundamentals/primitives/index
---
# Primitives in ASP.NET Core

ASP.NET Core primitives are low-level building blocks shared by framework extensions. You can use these building blocks in your own code.

[Detect changes with Change Tokens](xref:fundamentals/primitives/change-tokens)