SAILLENT is an enterprise AI action firewall that intercepts and enforces security policies on every AI request before it reaches models, APIs, tools, or sensitive data. It provides five layers of runtime defense including prompt injection protection, PII redaction, zero-trust tool enforcement, a granular policy engine, and a full audit trail. SAILLENT supports compliance with frameworks such as SR 11-7 and OSFI E-23 and works with any LLM provider. Built in Rust for sub-millisecond latency, it can be deployed in production environments in minutes and integrates with existing SIEM and compliance tooling.