var client = new RestClient("http://example.com"); // client.Authenticator = new HttpBasicAuthenticator(username, password); var request = new RestRequest("resource/{id}", Method.POST); request.AddParameter("name", "value"); // adds to POST or URL querystring based on Method request.AddUrlSegment("id", "123"); // replaces matching token in request.Resource // easily add HTTP Headers request.AddHeader("header", "value"); // add files to upload (works with compatible verbs) request.AddFile(path); // execute the request IRestResponse response = client.Execute(request); var content = response.Content; // raw content as string // or automatically deserialize result // return content type is sniffed but can be explicitly set via RestClient.AddHandler(); RestResponse<Person> response2 = client.Execute<Person>(request); var name = response2.Data.Name; // easy async support client.ExecuteAsync(request, response => { Console.WriteLine(response.Content); }); // async with deserialization var asyncHandle = client.ExecuteAsync<Person>(request, response => { Console.WriteLine(response.Data.Name); }); // abort the request on demand asyncHandle.Abort();