A memory firewall is the defensive layer between untrusted submissions and the knowledge graph. It assumes that incoming memory, instructions, or skills may be wrong, poisoned, over-permissioned, or malicious until proven otherwise.
The self-moderated design describes layered checks: provenance tagging, schema validation, signature and hash verification, sanitization, trust scoring, permission checks, semantic drift detection, cross-key consistency, behavioral anomaly detection, and quarantine plus rollback routing.
Human explanation
It is like customs inspection for AI memory: nothing gets to become trusted knowledge until it passes the gates.