OpenCloak

Chrome extension that swaps your personal details out of AI prompts before sending.

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OpenCloak is a free, open-source Chrome extension that detects personal details in an AI prompt and swaps them for believable fakes before the prompt is sent to ChatGPT, Claude, Gemini, Perplexity, Grok, or DeepSeek. Detection runs entirely on-device through WebGPU, so the prompt text never leaves the browser for analysis, and there's no server or account. It's aimed at people who want to avoid sharing personal details with AI chat services without manually rewriting every prompt.

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