hol-guard

HOL Guard is an open-source AI agent antivirus solution that blocks risky tools, secret access, prompt injection, malicious packages, MCP servers, plugins, and skills at runtime. It detects and prevents potential security threats by reviewing agent operations such as shell commands, file access, package installations, and MCP tool calls. HOL Guard runs locally without requiring an account and provides a CLI and local dashboard for managing protection policies, resolving approval issues, and reviewing decision history. Optional Guard Cloud offers shared history, team policies, and device management features.