In order to connect your application to Unleash you need to use a client SDK for your programming language. Unleash-hosted instances will always be a protected instance, you will therefore have to specify a client secret as the authorization header when you are connecting your client SDK.

On this page you find examples for connecting your application to the demo instance. If you are connecting to your own private instance you will have to remember to replace the client secret and the API url given in the examples.

We have examples for all official client SDKs:

When you get access to your instance – we will provide you with your Client secret and your API url for your instance.

Our demo instance has the following settings – use these in case you would like to connect your test-app to our demo environment.

Client secret:

56907a2fa53c1d16101d509a10b78e36190b0f918d9f122d

API url:

https://eu.unleash-hosted.com/demo/api/

Test with curl:

curl https://eu.unleash-hosted.com/demo/api/client/features \     
-H "Authorization: 56907a2fa53c1d16101d509a10b78e36190b0f918d9f122d";

Java SDK

UnleashConfig unleashConfig = UnleashConfig.builder()
        .appName("my.java-app")
        .instanceId("your-instance-1")
        .unleashAPI("<API url>")
        .customHttpHeader("Authorization", "<client secret>")
        .build();

    Unleash unleash = new DefaultUnleash(config);
      

Read more at github.com/Unleash/unleash-client-java


Node.js SDK

const unleash = require('unleash-client');
    
unleash.initialize({
  url: '<API url>',
  appName: 'my-node-name',
  instanceId: 'my-unique-instance-id',
  customHeaders: {'Authorization': '<Client secret>'}
});

Read more at github.com/Unleash/unleash-client-node


Go SDK

import (
  "github.com/Unleash/unleash-client-go/v3"
)
    
func init() {
  unleash.Initialize(
    unleash.WithAppName("my-node-app"),
    unleash.WithUrl("<API url>"),
    unleash.WithCustomHeaders(http.Header{"Authorization": {"<Client secret>"}}),
  )
}

Read more at github.com/Unleash/unleash-client-go


Ruby SDK

    require 'unleash'
  
    @unleash = Unleash::Client.new(
      url: '<API url>',
      app_name: 'simple-test',
      custom_http_headers = {'Authorization': '<Client secret>'},
    )
    

Read more at github.com/Unleash/unleash-client-ruby


Python SDK

    from UnleashClient import UnleashClient
  
    client = UnleashClient(
        url="<API url>",
        app_name="my-python-app",
        custom_headers={'Authorization': '<Client secret>'})
    
    client.initialize_client()
  
    client.is_enabled("unleash.beta.variants")

Read more at github.com/Unleash/unleash-client-python

.NET SDK

NB! Please pay attention that the API url is without the “/api” at then ending of the API url.

    var settings = new UnleashSettings()
    {
        AppName = "dotnet-test",
        InstanceTag = "instance z",
        UnleashApi = new Uri("https://eu.unleash-hosted.com/demo/"),
        SendMetricsInterval = TimeSpan.FromSeconds(20),
        CustomHttpHeaders = new Dictionary<string, string>()
        {
            {"Authorization","<Client secret>" }
        }
    };
  
    var unleash = new DefaultUnleash(settings);

Read more at github.com/stiano/unleash-client-dotnet