For testing purposes we have set up a demo instance that you can use in order to test out different use-cases before setting up your own instance. You can find the demo instance here: https://app.unleash-hosted.com/demo/
NOTE: This is a demo instance set up with the Enterprise version. Some of the functionality may be enterprise specific, but everything we cover here is also available in open source.
### Unleash Pro & Enterprise Instances {#unleash-pro-and-enterprise-instances}
You can run Unleash in the cloud by using our hosted offerings. Please see the [plans page](https://www.getunleash.io/pricing) to learn more.
## Create your first flag {#create-a-flag}
**Step 1: Navigate to the Feature toggles list**
**Step 2: Click 'New feature toggle'**
**Step 3: Give it a unique name, and click 'Create feature toggle'**
For a detailed guide on how to create a flag through the UI, [you can follow this guide](../how-to/how-to-create-feature-toggles.md).
## Connect a client-side SDK {#connect-a-client-side-sdk}
If you have set up your own Unleash instance and are using the front-end API, then create a [front-end token](../reference/api-tokens-and-client-keys.mdx#front-end-tokens) and use `<your-unleash-instance>/api/frontend` as the API URL.
If you don't have your own Unleash instance set up, you can use the Unleash demo instance's frontend API. In that case, the details are:
- API URL: `https://app.unleash-hosted.com/demo/api/frontend`
Now you can open your application code and connect through one of the [client-side SDKs](../reference/sdks#client-side-sdks).
The following example shows you how you could use the [JavaScript SDK](../generated/sdks/client-side/javascript-browser.md) to connect to the Unleash demo frontend API:
```javascript
import { UnleashClient } from 'unleash-proxy-client';
// Unleash is ready to serve updated feature flags.
// Check a feature flag
if (unleash.isEnabled('some-toggle')) {
// do cool new things when the flag is enabled
}
});
```
## Connect a backend SDK {#connect-a-backend-sdk}
If you have set up your own Unleash instance and want to connect using a backend SDK, then create a [client token](../reference/api-tokens-and-client-keys#client-tokens) and use `<your-unleash-instance>/api` as the API URL.
If you don't have your own Unleash instance set up, you can use the Unleash demo instance's client key. In that case, the details are:
- API URL: `https://app.unleash-hosted.com/demo/api`
Now you can open up your application code and create a connection to Unleash using one of our [SDKs](../reference/sdks/index.md). Here's an example using the NodeJS SDK to connect to the Unleash demo instance: