Securing MCP in Production: PII Redaction, Guardrails, and Data Exfiltration Prevention

Production is a different security environment In development, the worst that happens when an agent misbehaves is a confusing output or a wasted API call. In production, an agent with access to real customer data, live databases, and external communication tools can exfiltrate sensitive records, corrupt data, or generate outputs that violate regulatory requirements — all before a human has a chance to intervene. The security controls that suffice in development are not the security controls that