Built a prompt injection proxy that beats OpenAI Moderation and LlamaGuard — see it block attacks live
Reddit - Artificial Intelligence
1 min read
About this article
Built Arc Gate — sits in front of any OpenAI-compatible endpoint and blocks prompt injection before it reaches your model. Try it here — no signup, no code, no setup: https://web-production-6e47f.up.railway.app/try Type any prompt and see if it gets blocked or passes. The examples on the page show the difference. The main detection layer is a behavioral SVM on sentence-transformer embeddings — catches semantic intent, not just pattern matches. Phrase matching is just the fast first pass. Four...
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Originally published on April 29, 2026.
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