### 1.1 Create a Service Account key for GCS and get the Credentials File
1. Navigate to the [API Console Credentials page](https://console.developers.google.com/project/_/apis/credentials).
2. Select a project or create a new project. Note the project ID.
3. Select the **Create credentials** dropdown on the **Credentials** page, and click **Service account key**.
4. Select **New service account** from the **Service account** dropdown.
5. Populate the **Service account name** and **Service account ID**.
6. Click the dropdown for the **Role** and choose **Storage** > **Storage Admin***(Full control of GCS resources)*.
7. Click the **Create** button to download a credentials file and rename it to `credentials.json`.
**Note:** For alternate ways to set up *Application Default Credentials*, see [Setting Up Authentication for Server to Server Production Applications](https://developers.google.com/identity/protocols/application-default-credentials).
## <a name="test-using-minio-browser"></a>2. Test Using MinIO Browser
MinIO Gateway comes with an embedded web-based object browser that outputs content to http://127.0.0.1:9000. To test that MinIO Gateway is running, open a web browser, navigate to http://127.0.0.1:9000, and ensure that the object browser is displayed.
MinIO Client is a command-line tool called `mc` that provides UNIX-like commands for interacting with the server (e.g. ls, cat, cp, mirror, diff, find, etc.). `mc` supports file systems and Amazon S3-compatible cloud storage services (AWS Signature v2 and v4).
* It only supports read-only and write-only bucket policies at the bucket level; all other variations will return `API Not implemented`.
* The `List Multipart Uploads` and `List Object parts` commands always return empty lists. Therefore, the client must store all of the parts that it has uploaded and use that information when invoking the `_Complete Multipart Upload` command.
