Tidewall

AI chatbots are useful, until someone pastes a customer's email, a patient's NHS number or an API key into one. Tidewall checks each message when you press Send on 20+ AI tools, including ChatGPT, Microsoft Copilot, Gemini, Claude, Perplexity and DeepSeek. If it finds sensitive data, it holds the message and shows exactly what the AI would see. One click replaces names, emails and numbers with placeholders and removes secrets; the reply shows the real details on your screen only. It catches emails, phone numbers, NHS and National Insurance numbers, payment cards, IBANs, API keys and your own client codes, using real checksums to avoid false alarms. Everything runs inside the browser: nothing you type is stored or sent. Free for individuals; teams roll it out with Intune or Google Workspace.