Meterian Heidi is an IDE security plugin designed to detect vulnerabilities in software dependencies during the development phase. It is available for Visual Studio Code and JetBrains IDEs, and can be installed from their respective marketplaces. Heidi operates by scanning manifest files — structured dependency lists — rather than transferring actual source code to external servers. Manifest files are temporarily processed in an isolated environment, keeping source code private while still enabling vulnerability detection. The plugin runs in the background without interrupting developer workflow. When a vulnerability is identified, it surfaces actionable insights and suggested fixes that can be applied directly within the IDE. Heidi is offered in two editions: - **Free Edition:** Available without registration or subscription. Provides essential dependency scanning by analyzing manifest files. - **Premium Edition:** Requires a Meterian account. Unlocks advanced scanning capabilities, comprehensive vulnerability analysis, private project support, and enterprise-grade features. The tool is positioned as a shift-left security measure, enabling developers to identify and resolve dependency vulnerabilities at the coding stage rather than later in the build pipeline or post-deployment.