The Snyk CLI is a powerful tool that can scan and monitor applications for security vulnerabilities, making it easier to secure JavaScript projects from the command line interface (CLI). The CLI integrates seamlessly into development workflows, allowing developers to proactively address security concerns early in the development process. It provides benefits such as security scanning, early detection of vulnerabilities, remediation guidance, support for compliance requirements and best practices, language and ecosystem support, and a developer-friendly experience. To use the Snyk CLI, install it globally using npm or Yarn, authenticate with a Snyk account, and then run commands like `snyk test` to scan the project's dependencies and report any issues. The CLI also offers features like `snyk monitor`, which captures snapshots of the project and sends them to Snyk, and `snyk ignore`, which allows ignoring known issues or false positives. Additionally, it provides commands for testing and monitoring local or remote container images, such as Docker images, with `snyk container test` and `snyk container monitor`. By using the Snyk CLI, developers can improve the security, reliability, and release velocity of their projects.