AI is writing real production code — but security still happens after generation. Cencurity Engine (CAST) enforces security during generation, in real time. It runs inline between your IDE/agent and the LLM and: - blocks dangerous code (eval, subprocess) - redacts secrets (API keys, credentials) - enforces policies in the stream Works across OpenAI, Claude, Gemini, and OpenAI-compatible models (xAI, DeepSeek, LLaMA). No plugin required. 100% open source.