I Built an Open-Source AI Firewall Because Every LLM App Leaks Data

AI Security Gateway is an open-source proxy that sits between apps and LLM providers to inspect requests in real time.

It redacts 28+ types of personal data, blocks prompt injections, enforces budgets, and can route traffic to cheaper models.

The stateless design keeps only metadata, not prompt contents, reducing privacy, security, and compliance risk.

The tool targets enterprise use cases where sensitive data would otherwise be sent directly to LLM vendors.