We Open-Sourced Both Halves of Our Security Stack — Detection and Deliberation
We Open-Sourced Both Halves of Our Security Stack — Detection and Deliberation AEGIS catches the threat. ENLIL decides what it means. Both are free, and we want to know if they actually help you. We've written before about each of these projects separately — AEGIS's post-quantum forensic logging and why ENLIL runs 9 LLMs in parallel instead of one . This post is about why they're actually one system, and why we're not gatekeeping either half of it. Two different jobs AEGIS is an intrusion detection/prevention system. It watches traffic, correlates signals across nine layers (from crypto-level filtering to adaptive moving-target defense), and decides — fast, locally, without calling out to anything — whether something is an attack. It's deliberately narrow: detection and containment, nothing else. No counterattacks, no active reconnaissance, one process, deployable on a standard VPS. ENLIL does the opposite job. It's slow by design — it convenes a council of independent LLMs, lets them reason in isolation (no model sees another's answer until synthesis), and produces a signed Decree: the majority view, the dissents, and a final verdict. It's built for the decisions where being fast and wrong is worse than being slow and right. Neither one replaces the other. AEGIS shouldn't spend 30 seconds deliberating about whether a SYN flood is a SYN flood. ENLIL shouldn't be making split-second network decisions. But there's an obvious seam between them: what happens when AEGIS catches something that isn't a simple yes/no — a pattern that's ambiguous, or severe enough that you want more than one model's opinion before you act on it? The Bridge That seam is a small connector: when AEGIS's detector layer flags something at high or critical severity, it fires a signed event at ENLIL's API. ENLIL convenes a tier of the council sized to the severity — a lighter tier for routine escalations, the full council (including the most expensive model) only for the things that deserve it. The