Refit

reactiveui.github.io · checked 11 Oct 2026

#31 · API clients

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How it plugs in

NoPublic API

NoOpen source

YesFree tier

Signal on API clients6.3#31 of 38

Refit turns a C# interface into an HTTP client and generates its implementation during the build.

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Facts

Website: reactiveui.github.io
Price: Free tier
Free trial: No
Ahead-of-time compilation: Refit documents generated clients and JSON code for apps compiled ahead of time.
Automated test runs: Yes
Build requirements: The source generator requires Roslyn 4.8 or newer and PackageReference; the README names .NET SDK 8.0.100 and Visual Studio 2022 17.8 as providing that compiler baseline.
Dependency injection: Refit.HttpClientFactory registers clients with dependency injection and IHttpClientFactory.
Diagnostics: Refit has a diagnostics guide for observing client activity.
History: The license file says Anna Betts created Refit in 2012 and ReactiveUI has maintained it since.
HTTP client: Generated implementations send requests through HttpClient, which the app controls.
HTTP client control: Applications retain control of HttpClient, cancellation, and serialization.
Integration: Refit uses HttpClient and documents registering clients with dependency injection.
License: The Refit project is licensed under the MIT license.
Native AOT: The documentation describes generated clients and JSON metadata for apps compiled ahead of time.
Package: The project instructs users to install the Refit NuGet package in the project that declares the interface.

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