OpenSourceInitiative.LicenseApi 2.1.0

.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. 
dotnet add package OpenSourceInitiative.LicenseApi --version 2.1.0
                    


                    

                
NuGet\Install-Package OpenSourceInitiative.LicenseApi -Version 2.1.0
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="OpenSourceInitiative.LicenseApi" Version="2.1.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="OpenSourceInitiative.LicenseApi" Version="2.1.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="OpenSourceInitiative.LicenseApi" />
                    


                            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 OpenSourceInitiative.LicenseApi --version 2.1.0
                    


                    

                
#r "nuget: OpenSourceInitiative.LicenseApi, 2.1.0"
#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 OpenSourceInitiative.LicenseApi@2.1.0
#: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=OpenSourceInitiative.LicenseApi&version=2.1.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=OpenSourceInitiative.LicenseApi&version=2.1.0
                    


                            Install as a Cake Tool

OpenSourceInitiative.LicenseApi

Lightweight, resilient client for the Open Source Initiative (OSI) License API.

Highlights:

  • Fetches the OSI license catalog and extracts human‑readable license text from the HTML pages
  • In‑memory, thread‑safe cache with fail‑safe behavior (returns last snapshot on network errors)
  • Search by name or id and lookup by SPDX identifier
  • Async API plus synchronous counterparts
  • Targets .NET 10 and .NET Standard 2.0

Install:

dotnet add package OpenSourceInitiative.LicenseApi

Basic usage:

using OpenSourceInitiative.LicenseApi.Clients;

var http = new HttpClient { BaseAddress = new Uri("https://opensource.org/api/") };
using var client = new OsiLicensesClient(http);

// Load all
var licenses = await client.GetAllLicensesAsync();

// Search by name or id
var apache = await client.SearchAsync("Apache");

// Lookup by SPDX (sync/async)
var mit = client.GetBySpdx("MIT");
var mitAsync = await client.GetBySpdxAsync("MIT");

Dependency Injection (recommended):

Register the client as a typed HTTP client using the built‑in ServiceCollection extensions in this package.

using Microsoft.Extensions.DependencyInjection;
using OpenSourceInitiative.LicenseApi.Extensions;
using OpenSourceInitiative.LicenseApi.Interfaces;

var services = new ServiceCollection();
services.AddLogging();
services.AddOsiLicensesClient(o =>
{
    // o.BaseAddress = new Uri("https://opensource.org/api/");
});

await using var provider = services.BuildServiceProvider();
var client = provider.GetRequiredService<IOsiLicensesClient>();

var all = await client.GetAllLicensesAsync();
var byName = client.Search("Apache"); // sync search
var mit = await client.GetBySpdxAsync("MIT");

Example project

OpenSourceInitiative.LicenseApi.Example demonstrates both direct and DI usage, including search and SPDX lookup.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  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 is compatible.  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. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on OpenSourceInitiative.LicenseApi:

Package Downloads
OpenSourceInitiative.LicenseApi.DependencyInjection

Dependency Injection extensions for OpenSourceInitiative.LicenseApi. Provides IServiceCollection extensions to register a typed IOsiLicensesClient with IHttpClientFactory and optional request logging via ILogger. Multi-targets net10.0 and netstandard2.0.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
2.1.0 111 4/2/2026
2.0.0 107 3/4/2026
1.1.1 294 12/17/2025
1.1.0 291 12/17/2025
1.0.0 329 12/16/2025