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Microsoft.AspNetCore.OpenApi package icon

Microsoft.AspNetCore.OpenApi

v10.0.3

Provides APIs for annotating route handler endpoints in ASP.NET Core with OpenAPI annotations. This package was built from the source code at https://github.com/dotnet/dotnet/tree/c2435c3e0f46de784341ac3ed62863ce77e117b4

aspnet dotnetframework Microsoft
aspnetcore openapi
NuGet Stats Changelog
Total Downloads
221.4M
221,433,816
Published
Feb 10, 2026
Latest stable version

Install

.NET CLI
dotnet add package Microsoft.AspNetCore.OpenApi --version 10.0.3
Package Manager Console
Install-Package Microsoft.AspNetCore.OpenApi -Version 10.0.3
PackageReference
<PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.3" />

Frameworks

net10.0

Dependencies

Microsoft.OpenApi
net10.0
[2.0.0, )

Adoption guide

Teams staying close to first-party ASP.NET Core primitives and minimal external framework layering.

ASP.NET Core guide
Why it appears in the guide: First-party OpenAPI generation support aligned with modern ASP.NET Core hosting patterns. Trade-off: Feature customization depth may require additional conventions or complementary packages.

Compatibility metadata lists 1 target framework; confirm the exact target used by your application.

How to read this guidance

Sources: published NuGet v3 registry metadata and explicit NuBrowse editorial guides. Refresh: package metadata is refreshed from NuGet when the page loads. Limit: this is not a security, legal or compatibility guarantee; validate the selected version in your project.

Useful next steps

Move from package metadata to a concrete selection or review workflow.

ASP.NET Core package guide Audit NuGet dependencies in a .NET projectReview NuGet licenses before shipping