Constellation Gate AI is a security middleware proxy that sits between your AI agents and the language models they call. It intercepts every prompt and response in real time to enforce prompt injection defense, scan for sensitive data leaks, and compress token usage, all without requiring any code changes to your existing workflow. Ranked number one across 16 public prompt injection benchmarks, Gate provides the most proven defense layer available for production AI deployments.

Core Features

Prompt Injection Defense — Blocks malicious attempts to manipulate your AI agent into unintended actions before prompts reach the model. Achieves a 97.4% F1 score on public benchmarks, ranking first among all evaluated solutions.
Secret Scanning and Redaction — Automatically detects and redacts API keys, access tokens, customer IDs, and other sensitive information from both prompts and responses, preventing accidental data leaks through AI conversations.
Token Savings and Compression — Applies lossless, cache-aware compression to reduce token usage by 20 to 40 percent without changing model output quality, directly lowering API costs on every call.
Tamper-Evident Audit Trail — Every prompt, response, and security decision is logged with cryptographic anchoring to a digital evidence layer, satisfying SOC 2, HIPAA, and GDPR audit requirements.
One-Click Integration — The Gate Connect desktop app detects your existing AI tools (Claude Code, Cursor, Codex, OpenCode) and routes each through Gate with a single click. Developers can also swap one line of code in their SDK to point at Gate.

Use Cases

Constellation Gate AI is designed for DevOps teams deploying AI coding agents in production, security engineers who need real-time threat protection for LLM-powered applications, and compliance officers requiring verifiable audit trails of every model interaction. Enterprise teams using Claude Code, Cursor, or ChatGPT for software development can add a security layer without disrupting their existing workflows. Financial services and healthcare organizations benefit from the automatic PII redaction and HIPAA-compliant logging. Companies with high token consumption can reduce costs significantly through the built-in compression engine.

Pricing

Constellation Gate AI offers a free tier with no credit card required, suitable for individual developers and small teams. Paid plans start at $29 per month for expanded rate limits and advanced features. Teams can bring their own model provider keys (Anthropic, OpenAI, Gemini, Grok) and pay only for the security layer, or use Gate's pay-as-you-go endpoint for unified model access with built-in protection.