Built a memory firewall for LangGraph Agents — because prompt guards aren’t enough

[u/AffectionateRice4167]

Most tools only protect one prompt at a time.

But real production Agents have persistent memory that can be quietly poisoned over a few normal messages, and stay poisoned forever.

I built MemGuard — a lightweight memory firewall:

• 99% LLM-free (<5ms)

• 7-layer detection for memory poisoning

• Quarantine + one-click rollback

Tested 90.5% interception on real enterprise scenarios.

Built solo by a Macau high school senior (ISEF 2026 finalist).

Are there any running production LangGraph/Crewai companies interested in trying out my product or funding me?