Why an in-app companion should be loopback-only and local-first
The security reasoning behind restricting Agent Assistant's companion service to loopback-only connections instead of a network-accessible service.
By Agent Software

Scheduled article
This post is scheduled to publish in full on October 30, 2026. The final URL is already live so social previews, search crawlers, and future readers all resolve to the same article.
An AI companion embedded in other apps is a tempting attack surface — restricting it to loopback-only closes most of that off by design.
- Final publish date: October 30, 2026
- Primary categories: Engineering
- Tags: #suite #agent-assistant #local-models
In the meantime, the related posts below cover the adjacent product and engineering context this article builds on.


