guardmarly is an open-source command-line tool that scans codebases for over 30 types of security vulnerabilities, including IDOR, missing authorization, and SQL injection. It supports Python, JavaScript, Go, Java, and C#, operates fully offline, and requires no API keys, making it ideal for secure and air-gapped environments.
In the Code review & quality space, guardmarly takes a focused approach. It helps developers identify and fix security vulnerabilities in their codebases without requiring internet access or API keys. It is built as an open-source project for software developers and security engineers. guardmarly is open source under the MIT license. The product ships for the command line.
mattybellx builds and maintains guardmarly, and the product first shipped in 2026. Development happens publicly on GitHub with 12 stars and 340 commits in the last 90 days. Key capabilities include vulnerability scanning, offline analysis, and multi-language support.
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