PowerGRR is a PowerShell API client library that provides automation and scripting capabilities for GRR (Google Rapid Response) across Windows, Linux, and macOS platforms. The tool enables users to interact with various GRR components including flows, hunts, labels, artifacts, approvals, and search functionality through PowerShell commands. It allows investigators to start flows on single or multiple clients and retrieve flow results as PowerShell objects for enhanced filtering and analysis. Key features include the ability to download collected files directly from the command line, create and manage hunts with result retrieval as PowerShell objects, and handle labels and artifacts programmatically. The tool also supports approval management for security workflows and provides search capabilities for specific data within the GRR environment. PowerGRR simplifies the workflow by allowing users to work with computer names instead of GRR's internal client IDs, making integration with other tools more straightforward. The tool generates text-based documentation of investigative work that can be easily shared and reused by other team members. This automation capability is particularly useful for incident response scenarios where investigators need to perform repetitive tasks across multiple endpoints or when conducting large-scale forensic investigations that require systematic data collection and analysis.