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đź”’ Data Security

At PromptCue, your privacy and security are our top priorities. We store everything—from your API keys and chat logs to saved prompts and variables—in your browser’s localStorage. This ensures that your data stays on your device and is never transmitted to external servers, giving you complete control over your information.

Local Storage Availability

PromptCue relies on localStorage to function properly. If you're using a browser that doesn't support localStorage or if it is disabled, PromptCue may not work as intended. Please ensure that localStorage is enabled, or try using a compatible browser for the best experience.

How We Store Your Data?​

localStorage for Privacy and Performance

  • Secure Storage:
    All sensitive data, including your API keys, chat histories, logs, saved prompts, and variables, is stored directly in your browser’s localStorage. This means your data never leaves your device—keeping your information private and secure.

  • Fast and Efficient:
    Storing data locally allows for rapid access and a seamless user experience. Your interactions with PromptCue remain snappy and responsive, as we don’t need to fetch this information from a remote server.

Introducing the Local Vault​

Manage Your Local Storage with Ease

To help you keep track of your data usage, PromptCue features the Local Vault—a handy tool accessible under the Profile option in the app sidebar. The Local Vault provides:

  • Real-Time Storage Insights:
    See exactly how much space PromptCue is using for chats, logs, saved prompts, and variables.

  • Data Management:
    If your browser’s localStorage limit is reached, you’ll receive guidance on managing your data. In such cases, you might need to delete some content (e.g., older chats or unused prompts) to free up space and continue using the app seamlessly.

Storage Limit

Each browser imposes its own storage limits on localStorage. The Local Vault is designed to help you monitor this usage and maintain optimal performance.

Security Considerations​

While storing data locally offers enhanced privacy, it also comes with considerations that we address through several best practices:

  • Content Security Policies (CSP):
    We implement strict CSP headers to minimize the risk of cross-site scripting (XSS) attacks. This helps ensure that malicious scripts cannot access or manipulate your locally stored data.

  • Regular Security Audits:
    Our development team conducts frequent code reviews and security audits to identify and mitigate any vulnerabilities, particularly those associated with client-side storage.

  • User Environment Recommendations:
    We advise users to keep their browsers updated and to use trusted extensions. A secure browser environment is a critical factor in protecting data stored in localStorage.

  • Encrypted API Keys:
    To protect your sensitive information, PromptCue encrypts your API keys before saving them in your browser's localStorage. The encryption process is handled via our API, ensuring that the keys are stored in an encrypted format on your device only.

    Key Storage
    • We never store your API keys on our servers; all keys remain on your device.
    • Since your API keys are encrypted, even if someone were to access your localStorage, the keys would remain protected by encryption.

Why localStorage?​

  • Privacy First:
    By keeping your data on your own device, we ensure that your sensitive information—like API keys—remains private and secure.

  • No Sign-Up Hassles:
    With no need for remote servers to manage your data, you can start using PromptCue instantly without the inconvenience of creating an account.

  • Performance Benefits:
    localStorage enables fast data retrieval, keeping your app interactions smooth and efficient.

Need More Information?​

For further details on how we safeguard your data and how to manage your storage using the Local Vault, explore our additional resources or contact our support team.

By leveraging your browser’s localStorage, robust security practices, and our innovative Local Vault feature, PromptCue delivers a secure, private, and lightning-fast AI chat experience. Enjoy the peace of mind that comes with knowing your data is safe and fully under your control.