This expanded addendum defines the Moral Standards Interface (MSI), the governing layer that enables the Human Moral Archive Framework (HMAF) to function as a verifiable, auditable, interpretable, and enterprise-ready moral governance engine. While previous addenda established the mathematical constructions and computational architecture of HMAF—including distributional modeling (MDM), density weighting (MDF), indexing (MDI), computational transformation (MCP), and emergent behavior analysis (MEP, MEP-II)—none provided the unified standards required for large-scale deployment or regulatory evaluation. Addendum IX fills this gap. MSI integrates three essential domains into a single standards layer: (1) Moral Verification, which defines the full lifecycle of baseline capture, drift detection, coherence scoring, entropy monitoring, anomaly escalation, and audit-log generation; (2) Computational Synchronization, which establishes the timing, sequence, and coordination rules governing how HMAF subsystems update and exchange state information across cycles; and (3) Interpretive Semantics, which creates a formal lexicon for understanding HMAF outputs and categorizing coherence, drift, stability, and emergence events in compliance with OECD, NIST, and EU AI Act frameworks. Together, these components transform HMAF from a conceptual architecture into a deployable moral-governance layer suitable for enterprise integration, verification audits, and acquisition-grade due diligence. MSI does not disclose proprietary code, transformation rules, algorithms, or internal computational logic; instead, it provides the interpretive and procedural scaffolding required for safe and responsible operational use.