
3/10/2026 · Matt Coons
What this post added
This post details the application of the GitLab Duo Agent Platform for automating detection gap analysis within GitLab's Signals Engineering team. It introduces two AI agents: the pre-built Security Analyst Agent and a custom-built Detection Engineering Assistant. The post explains the 'detection gap problem,' the capabilities of the GitLab Duo Agent Platform, and provides guidance on how to configure and use custom agents by crafting detailed system prompts that encode domain knowledge, tech stack context, and desired output formats. It highlights the benefits of this automation in improving the consistency and thoroughness of security incident reviews and the creation of actionable detection engineering tasks, while emphasizing that it acts as a force multiplier for skilled engineers.