<ul><li>To authenticate and write to Google Sheets from a local script via gcloud CLI, you can use the gcloud CLI's application default credentials.</li><li>Enable the Sheets API in your Cloud project by running the command 'gcloud services enable sheets.googleapis.com'.</li><li>Set your application default credentials and claim the necessary OAuth scopes by running 'gcloud auth application-default login --scopes "https://www.googleapis.com/auth/cloud-platform,https://www.googleapis.com/auth/drive,https://www.googleapis.com/auth/spreadsheets"'.</li><li>Initialize a Node client for Google Sheets by importing googleapis and configuring the necessary scopes.</li></ul>

Write to Google Sheets from a local script via gcloud CLI authentication

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