A local AI model within an AgentCloak browser extension detects and replaces names, account numbers, and addresses with substitutes before prompts are sent to AI services. The software restores original values in the response to maintain the context of the conversation. The extension functions without an account and is compatible with ChatGPT, Claude, Gemini, Grok, and DeepSeek.

The free tool provides privacy by processing data locally in the browser rather than on a remote server. This method allows the model to maintain the semantics of a reasoning task, avoiding the loss of information typically associated with standard text redaction when handling debugging logs or support tickets.