Intelligent Threat Prevention for LLMs, Agents, and APIs
Inline AI firewall that inspects every prompt, response, and tool call. Blocks prompt injection, jailbreaks, data exfiltration, hallucinations, toxicity, and unauthorized tool use — with sub-millisecond latency impact.
See AI Firewall in Action
Real-time file sanitization
File Sanitization in the ZeroTrusted.ai dashboard — redact PII, PHI, classified markings, and secrets from uploads and prompts before they reach any model. Supports English, Japanese, Spanish, Portuguese, and more.

Built for agentic AI, not just chatbots
AI Firewall sits between your users and every model — whether that's ChatGPT, Claude, Gemini, a self-hosted LLM, or an internal agent framework. Policies inspect every prompt, response, and tool call in real time.
Prompt & response inspection
Every prompt and every model response passes through a policy DSL. Detect prompt injection, jailbreaks, and unauthorized instructions before they reach the model or your user.
Inline data loss prevention
PII, PHI, secrets, classified markings, and custom-sensitivity tokens are redacted or blocked before a prompt ever leaves your perimeter.
Tool-use & function-call governance
Allow-list the tools an agent can invoke. Inspect arguments, enforce argument types, and revoke tool access the moment a policy violation fires.
Sub-millisecond latency
Inline or out-of-band deployment patterns. Inline adds under a millisecond to most inference paths; out-of-band captures telemetry with zero user impact.
DDoS & API protection
Rate-limit, throttle, and isolate abusive callers at the AI API layer. Adaptive rules tune themselves against live traffic patterns.
Adversarial ML defense
Detect model-inversion, membership-inference, and poisoning attempts across both provider APIs and self-hosted models.
Key Capabilities
Deploy where it fits
Three operational modes — pick one per application or combine them across your AI portfolio.
Inline proxy
Terminates AI API traffic for prompt/response inspection. Ideal for production-path enforcement with hard-block policies.
Out-of-band
Mirrors traffic for detection-only workflows and A/B policy tuning. Zero latency impact on the production path.
Browser / edge
Combines with Shadow AI Protection to enforce at the user's edge — for unmanaged AI endpoints and shadow AI usage.
Ready to deploy AI Firewall?
See how AI Firewall integrates with your existing security stack. Schedule a personalized demo today.