Microsoft.AspNetCore.OpenApi 8.0.19

Prefix Reserved
There is a newer version of this package available.
See the version list below for details.
dotnet add package Microsoft.AspNetCore.OpenApi --version 8.0.19
                    
NuGet\Install-Package Microsoft.AspNetCore.OpenApi -Version 8.0.19
                    
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.19" />
                    
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="8.0.19" />
                    
Directory.Packages.props
<PackageReference Include="Microsoft.AspNetCore.OpenApi" />
                    
Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.
paket add Microsoft.AspNetCore.OpenApi --version 8.0.19
                    
#r "nuget: Microsoft.AspNetCore.OpenApi, 8.0.19"
                    
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
#:package Microsoft.AspNetCore.OpenApi@8.0.19
                    
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.
#addin nuget:?package=Microsoft.AspNetCore.OpenApi&version=8.0.19
                    
Install as a Cake Addin
#tool nuget:?package=Microsoft.AspNetCore.OpenApi&version=8.0.19
                    
Install as a Cake Tool

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/aspnetcore/tree/277e317dd5cab9859ceea4c8ebae218522c2c173

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (580)

Showing the top 5 NuGet packages that depend on Microsoft.AspNetCore.OpenApi:

Package Downloads
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Package Description

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Package Description

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Core code generation engine and services for Coalesce. Learn more at https://coalesce.intellitect.com/

GitHub repositories (228)

Showing the top 20 popular GitHub repositories that depend on Microsoft.AspNetCore.OpenApi:

Repository Stars
microsoft/semantic-kernel
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Practical samples of ASP.NET Core 10 RC 1, 9, 8.0, 7.0, 6.0, 5.0, 3.1, 2.2, and 2.1,projects you can use. Readme contains explanations on all projects.
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A reference .NET application implementing an eCommerce site
RicoSuter/NSwag
The Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript.
fullstackhero/dotnet-starter-kit
Production Grade Cloud-Ready .NET 9 Starter Kit (Web API + Blazor Client) with Multitenancy Support, and Clean/Modular Architecture that saves roughly 200+ Development Hours! All Batteries Included.
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Thoughtfully architected, obscenely fast, thoroughly enjoyable web services for all
domaindrivendev/Swashbuckle.AspNetCore
Swagger tools for documenting API's built on ASP.NET Core
dotnet/aspire
Tools, templates, and packages to accelerate building observable, production-ready apps
microsoft/fluentui-blazor
Microsoft Fluent UI Blazor components library. For use with ASP.NET Core Blazor applications
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Examples and Tutorials of Event Sourcing in .NET
thomhurst/TUnit
A modern, fast and flexible .NET testing framework
SciSharp/LLamaSharp
A C#/.NET library to run LLM (🦙LLaMA/LLaVA) on your local device efficiently.
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Todo application with ASP.NET Core Blazor WASM, Minimal APIs and Authentication
evolutionary-architecture/evolutionary-architecture-by-example
Navigate the complex landscape of .NET software architecture with our step-by-step, story-like guide. Unpack the interplay between modular monoliths, microservices, domain-driven design, and various architectural patterns. Go beyond the one-size-fits-all solutions and understand how to blend these approaches based on your unique needs.
microsoft/dotnet-podcasts
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Arcenox-co/TickerQ
TickerQ is a fast, reflection-free background task scheduler for .NET — built with source generators, EF Core integration, cron + time-based execution, and a real-time dashboard.
MicrosoftLearning/AZ-204-DevelopingSolutionsforMicrosoftAzure
AZ-204: Developing solutions for Microsoft Azure
Version Downloads Last Updated
10.0.0-rc.1.25451.107 31,510 9/9/2025
10.0.0-preview.7.25380.108 17,084 8/12/2025
10.0.0-preview.6.25358.103 11,262 7/15/2025
10.0.0-preview.5.25277.114 19,093 6/6/2025
10.0.0-preview.4.25258.110 12,850 5/12/2025
10.0.0-preview.3.25172.1 9,754 4/10/2025
10.0.0-preview.2.25164.1 6,165 3/18/2025
10.0.0-preview.1.25120.3 5,645 2/25/2025
9.0.9 731,055 9/9/2025
9.0.8 1,531,771 8/5/2025
9.0.7 1,215,866 7/8/2025
9.0.6 1,440,054 6/10/2025
9.0.5 2,567,740 5/13/2025
9.0.4 2,358,071 4/8/2025
9.0.3 2,059,844 3/11/2025
9.0.2 2,034,971 2/11/2025
9.0.1 1,758,642 1/14/2025
9.0.0 4,272,248 11/12/2024
9.0.0-rc.2.24474.3 78,517 10/8/2024
9.0.0-rc.1.24452.1 40,013 9/10/2024
9.0.0-preview.7.24406.2 16,235 8/13/2024
9.0.0-preview.6.24328.4 10,684 7/9/2024
9.0.0-preview.5.24306.11 13,790 6/11/2024
9.0.0-preview.4.24267.6 12,755 5/21/2024
9.0.0-preview.3.24172.13 13,573 4/11/2024
9.0.0-preview.2.24128.4 8,262 3/12/2024
9.0.0-preview.1.24081.5 12,921 2/13/2024
8.0.20 160,994 9/9/2025
8.0.19 444,717 8/4/2025
8.0.18 378,462 7/8/2025
8.0.17 497,167 6/10/2025
8.0.16 562,332 5/13/2025
8.0.15 1,035,639 4/8/2025
8.0.14 1,067,842 3/11/2025
8.0.13 973,262 2/11/2025
8.0.12 1,157,623 1/14/2025
8.0.11 3,090,066 11/12/2024
8.0.10 4,594,653 10/8/2024
8.0.8 4,986,286 8/13/2024
8.0.7 3,485,668 7/9/2024
8.0.6 4,367,134 5/28/2024
8.0.5 1,701,401 5/14/2024
8.0.4 4,047,199 4/9/2024
8.0.3 3,372,178 3/12/2024
8.0.2 3,087,660 2/13/2024
8.0.1 3,810,591 1/9/2024
8.0.0 6,427,133 11/14/2023
8.0.0-rc.2.23480.2 106,632 10/10/2023
8.0.0-rc.1.23421.29 53,959 9/12/2023
8.0.0-preview.7.23375.9 72,033 8/8/2023
8.0.0-preview.6.23329.11 41,010 7/11/2023
8.0.0-preview.5.23302.2 18,449 6/13/2023
8.0.0-preview.4.23260.4 118,548 5/16/2023
8.0.0-preview.3.23177.8 20,827 4/11/2023
8.0.0-preview.2.23153.2 8,863 3/14/2023
8.0.0-preview.1.23112.2 6,447 2/21/2023
7.0.20 451,026 5/28/2024
7.0.19 150,534 5/14/2024
7.0.18 204,455 4/9/2024
7.0.17 171,252 3/12/2024
7.0.16 262,896 2/13/2024
7.0.15 403,452 1/9/2024
7.0.14 897,524 11/14/2023
7.0.13 1,394,960 10/24/2023
7.0.12 1,120,652 10/10/2023
7.0.11 1,588,823 9/12/2023
7.0.10 2,149,740 8/8/2023
7.0.9 1,887,333 7/11/2023
7.0.8 771,619 6/22/2023
7.0.7 1,212,217 6/13/2023
7.0.5 3,734,819 4/11/2023
7.0.4 1,655,483 3/14/2023
7.0.3 2,185,472 2/14/2023
7.0.2 1,666,904 1/10/2023
7.0.1 1,145,962 12/13/2022
7.0.0 2,099,484 11/7/2022
7.0.0-rc.2.22476.2 30,612 10/11/2022
7.0.0-rc.1.22427.2 27,071 9/14/2022
7.0.0-preview.7.22376.6 11,508 8/9/2022
7.0.0-preview.6.22330.3 9,268 7/12/2022
7.0.0-preview.5.22303.8 11,228 6/14/2022
7.0.0-preview.4.22251.1 8,294 5/10/2022