Constellation Gate AI

Constellation Gate AI is a security proxy that sits between your AI agent and the language model it talks to. Every prompt and every response gets inspected in real time for prompt injection attacks, credential leaks, and PII exposure. It works with any model provider — Anthropic, OpenAI, Google, xAI, OpenRouter — and integrates with popular coding agents like Claude Code, Cursor, and Codex. The setup takes minutes: you point your agent at Gate's endpoint instead of the model's, and it handles the rest.

What makes Gate stand out is how it handles both directions of traffic. Inbound prompts are scanned for injection attempts before they reach the model. Outbound responses are checked for secrets or sensitive data before they reach the user. You write the policy — block, redact, flag, or allow — and every decision gets logged to a blockchain-backed, tamper-evident audit trail. On top of security, Gate automatically compresses prompts and injects cache markers to save tokens, typically cutting costs by 20% or more. It also topped public prompt-injection benchmarks with a 97.4% F1 score, beating enterprise alternatives by a wide margin.

This tool is built for teams running AI agents in production — whether you're a solo developer using Claude Code, a startup deploying customer-facing chatbots, or an enterprise that needs auditable security controls. If you're already paying for a model subscription, Gate doesn't replace it; it just adds a layer of protection and cost savings on top. The free tier is generous enough to try it out without a credit card.