> For the complete documentation index, see [llms.txt](https://docs.snyk.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snyk.io/scan-fix-and-prevent/scan-with-snyk/snyk-iac/detect-manually-created-resources/configure-cloud-providers/configure-google-provider.md).
# Configure Google provider
How to configure the Google Cloud provider for Snyk IaC drift detection
## Authentication for Google provider
To use `iac describe`, set up credentials to make authenticated requests to your GCP project.
Because the `iac describe` command uses the Cloud Asset API, you must use a service account.
For information on setting up a service account, see the [GoogleCloud documentation](https://cloud.google.com/docs/authentication/production).
```
GOOGLE_APPLICATION_CREDENTIALS=your-creds.json \
CLOUDSDK_CORE_PROJECT=my-project \
snyk iac describe --to="gcp+tf"
```
You can use any `env var` from the [GoogleCloud sdk environment variables](https://cloud.google.com/sdk/docs/properties#setting_properties_via_environment_variables).
## Least privilege policy
The `iac describe` command uses the [Google Asset API](https://console.cloud.google.com/apis/api/cloudasset.googleapis.com/overview) to enumerate resources on your account and the [Cloud Resource Manager API](https://console.cloud.google.com/marketplace/product/google/cloudresourcemanager.googleapis.com) to enumerate project IAM resources. Be sure to enable these APIs for the GCP project you are using as shown in the following screenshot.
Enable Cloud Asset API
To enumerate resources, you need at least the role [Cloud Asset Viewer](https://cloud.google.com/iam/docs/understanding-roles#cloud-asset-roles).
## **Required roles**
To use `iac describe` with deep mode, you need access to retrieve the details of a resource, and the **Cloud Asset Viewer** role is not enough. To be able to get the details, set up the basic role of [**Viewer**](https://cloud.google.com/iam/docs/understanding-roles#basic-definitions) on your project. To read your IAM policies you also need the role [iam.securityReviewer](https://cloud.google.com/iam/docs/understanding-roles#iam-roles) on your project.
```
# Mandatory role to allow describe to enumerate resources
roles/cloudasset.viewer
# Required for deep mode only
roles/viewer
```
---
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