Send Requests

This topic shows how to send a few simple requests to the Google Cloud Billing API.

For a full list of methods, see the REST or RPC reference documentation.

Before you begin

1. Sign in to your Google Account.

   If you don't already have one, sign up for a new account.

2. Select or create a GCP project.

   Note: If you don't plan to keep the resources that you create in this procedure, create a project instead of selecting an existing project. After you finish these steps, you can delete the project, removing all resources associated with the project.

   Go to the project selector page

3. Make sure that billing is enabled for your Google Cloud Platform project. Learn how to enable billing.

4. Enable the Cloud Billing API.

   Enable the API

5. Set up authentication:

   1. In the GCP Console, go to the Create service account key page.

      Go to the Create Service Account Key page
   2. From the Service account list, select New service account.
   3. In the Service account name field, enter a name.

   4. From the Role list, select Project > Owner.

      Note: The Role field authorizes your service account to access resources. You can view and change this field later by using the GCP Console. If you are developing a production app, specify more granular permissions than Project > Owner. For more information, see granting roles to service accounts.
   5. Click Create. A JSON file that contains your key downloads to your computer.

6. Set the environment variable GOOGLE_APPLICATION_CREDENTIALS to the file path of the JSON file that contains your service account key. This variable only applies to your current shell session, so if you open a new session, set the variable again.

   Example: Linux or macOS

   Replace [PATH] with the file path of the JSON file that contains your service account key.

   export GOOGLE_APPLICATION_CREDENTIALS="[PATH]"

   For example:

   export GOOGLE_APPLICATION_CREDENTIALS="/home/user/Downloads/service-account-file.json"

   Example: Windows

   Replace [PATH] with the file path of the JSON file that contains your service account key, and [FILE_NAME] with the filename.

   With PowerShell:

   $env:GOOGLE_APPLICATION_CREDENTIALS="[PATH]"

   For example:

   $env:GOOGLE_APPLICATION_CREDENTIALS="C:\Users\username\Downloads\[FILE_NAME].json"

   With command prompt:

   set GOOGLE_APPLICATION_CREDENTIALS=[PATH]

Get a list of Cloud Billing Accounts

The API method to list all Cloud Billing Accounts (REST, RPC) is the simpest method in the API, as it has no required parameters, so it's a good place to start. The method simply returns all billing accounts that you have permission to view.

Protocol

GET https://cloudbilling.googleapis.com/v1/billingAccounts

Java

    ListBillingAccountsResponse result = service.billingAccounts().list().execute();

Retrieve a particular Cloud Billing Account

To retrieve a particular billing account (REST, RPC), you'll need to know the billing account ID. This example uses the sample ID 012345-567890-ABCDEF.

Protocol

GET https://cloudbilling.googleapis.com/v1/billingAccounts/012345-567890-ABCDEF

Java

    BillingAccount result = service.billingAccounts()
        .get("billingAccounts/00C5EA-61187E-D842F2").execute();

Enable Cloud Billing on a Google Cloud Platform project

To enable Cloud Billing on a GCP project, you need to call the Cloud Billing API to associate the GCP project with an existing Cloud Billing Account (REST, RPC). The following sample code associates GCP project tokyo-rain-123 with Cloud Billing Account 012345-567890-ABCDEF. Incidentally, the same API method can be used to disable Cloud Billing on a GCP project, by setting billingAccountName to empty.

Protocol

PUT https://cloudbilling.googleapis.com/v1/projects/tokyo-rain-123/billingInfo

{
  "billingAccountName": "billingAccounts/012345-567890-ABCDEF"
}

Java

    service.projects().updateBillingInfo(
            "projects/tokyo-rain-123",
            new ProjectBillingInfo().setBillingAccountName("billingAccounts/012345-567890-ABCDEF"))
        .execute();

Clean up

Caution: Deleting a project has the following effects:

• Everything in the project is deleted. If you used an existing project for this tutorial, when you delete it, you also delete any other work you've done in the project.
• Custom project IDs are lost. When you created this project, you might have created a custom project ID that you want to use in the future. To preserve the URLs that use the project ID, such as an appspot.com URL, delete selected resources inside the project instead of deleting the whole project.

If you plan to explore multiple tutorials and quickstarts, reusing projects can help you avoid exceeding project quota limits.

1. In the GCP Console, go to the Manage resources page.

   Go to the Manage resources page

2. In the project list, select the project you want to delete and click Delete .
3. In the dialog, type the project ID, and then click Shut down to delete the project.