The best .NET REST Client with task-based async, strong types and dependency injection on all platforms. Consume your ASP .NET Core Web APIs or consume RESTful APIs over the internet in C# or Visual Basic.

Documentation Here

Version 3.2.0 has been released!

It now works on Blazor Wasm. Check out the sample

It features a default JSON Serializer

Follow me on Twitter for updates.

A series of Blog posts will introduce the new functionality in the coming weeks. https://christianfindlay.com/

• It's fast! Initial tests show that it is faster than RestSharp and is one of the faster .NET Rest Clients available.
• Designed for Dependency Injection, Unit Testing and use with IoC Containers
• Async friendly. All operations use async, await keywords.
• Integrates with Polly resilience and transient-fault-handling
• Automatic serialization with any method (JSON, Binary, SOAP, Google Protocol Buffers)
• Installation from NuGet is easy on any platform
• Uses strong types with content body
• Supports WebAssembly, Android, iOS, Windows 10, .NET Framework 4.5+, .NET Core (.NET Standard 2.0)
• Supports GET, POST, PUT, PATCH, DELETE with ability to use less common HTTP methods

These features together make this the best C# REST client and the best alternative to RestSharp. Consuming REST APIs is simple and encourages best practice.

See documentation for more examples.

NuGet: Install-Package RestClient.NET

Please read this article about Serialization and Deserialization.

With Newtonsoft serialization

var client = new Client(new NewtonsoftSerializationAdapter(), new Uri("https://restcountries.eu/rest/v2/"));
var response = await client.GetAsync<List<RestCountry>>();

With default serialization on .NET Core

var client = new Client(new Uri("https://restcountries.eu/rest/v2/"));
var response = await client.GetAsync<List<RestCountry>>();

Protocol Buffers (Binary)

var person = new Person { FirstName = "Bob", Surname = "Smith" };
var client = new Client(new ProtobufSerializationAdapter(), new Uri("http://localhost:42908/person"));
person = await client.PostAsync<Person, Person>(person);

JSON

var client = new Client(new NewtonsoftSerializationAdapter(), new Uri("https://jsonplaceholder.typicode.com"));
client.SetJsonContentTypeHeader();
UserPost userPost = await client.PostAsync<UserPost, UserPost>(new UserPost { title = "Title" }, "/posts");

var client = new Client(new NewtonsoftSerializationAdapter(), new Uri("https://jsonplaceholder.typicode.com"));
await client.DeleteAsync("posts/1");

Please log any issues or feedback in the issues section. For pull requests, please see the contribution guide.