Practical · Building a Memory-Enabled AI Writing Partner (Part 3): Security Architecture (RAG Protection, Fact Guard, and BYOK)

Wed, 04 Feb 2026 10:00:00 +0800

In the previous 2.5 articles, I’ve already laid out the backbone of FantasyNovelAgent:

Building a Memory-Enabled AI Writing Partner (Part 1): Multi-Agent Architecture Evolution
Building a Memory-Enabled AI Writing Partner (Part 2): Database Evolution
Building a Memory-Enabled AI Writing Partner (Part 3): Retrieval System Evolution

This article dives deep into the most overlooked yet critical aspect of AI systems: Security.

If you’re thinking, “I’m just writing a novel, what security issues could there be?”, consider this:

Fact Guard - Tag - Shengxu · Cloud Architecture & DevOps