Mantis Skills: A Portable Toolkit for Building Security Review Harnesses (GitHub Repo)

Mantis Skills is a set of decoupled and sequential security-focused skills designed for Coding Agents. Rather than providing fixed instructions, this toolkit focuses on offering a flexible foundation that users can adjust, tune, and extend to fit their own environment.

Google recommends using AI to iteratively improve these skills, and suggests leveraging internal documentation, coding standards, and build systems to reinforce the threat model. It also emphasizes that it is important to adjust risk calibration to match each environment's risk tolerance.