Mizumi Privacy Policy

Last Updated: September 12, 2025

Your privacy and trust are the foundation of the Mizumi experience. We are committed to being transparent about how we handle your data and to building a service where you can feel safe and in control.

This policy explains what data we collect, why we collect it, how we use it, and your rights concerning that data. Our core promise is simple: we minimize data collection and prioritize your privacy by default.

1. Data We Collect

We only collect data that is essential for the Service to function, for safety and moderation, or to improve your experience.

A. Information from Discord:

  • Discord User ID: We store your unique Discord User ID to link your settings and data to your account.
  • Discord Username: We do not permanently store your username, but it is received and used by the Service in commands to facilitate AI communication (e.g., addressing you by name).

B. Data We Collect and Store:

  • Bot Interaction Data: To provide a persistent experience, we store data related to your interactions with Mizumi. This includes your token balance, persona customization choices, and your Connection Level. If you subscribe, we also store your premium subscription status.
  • Conversation Context Cache: To allow for coherent conversations, our system holds the last several messages of an active conversation in a secure, short-term cache. This cache is not automatically deleted unless our cache server restarts, but you can manually clear it at any time using the /clear command. This command also erases any long-term summaries that may have been generated from past conversations.

2. Our Conversation Content Policy:

We have a strict, risk-based policy for handling the content of your conversations, designed to provide maximum privacy and clarity.

Handling of Your Messages (The General Rule)

To generate a response, your message content is securely transmitted to a highly reputable, third-party Large Language Model (LLM) service. We use a privacy-protected contract with this AI partner that guarantees:

  • No Retention: Neither the AI partner nor Mizumi logs or stores your message content during this general interaction. The data is processed in-memory and discarded immediately after the response is generated.
  • No Training: Your conversations are never used to train or improve the AI partner's underlying models.

In short: For typical conversations, your message content is never stored by anyone.

The Only Exception: Safety Incident Reports

The sole exception to the rule above is when your message content triggers our automated safety systems (e.g., for moderation purposes).

  • Mizumi temporarily stores this specific message content as part of a Safety Incident Report.
  • This data is kept for a limited period, typically 90 days, to facilitate moderation, after which it is automatically and permanently deleted from Mizumi's systems.

AI Responses

  • We log the anonymous text of the AI's chat responses indefinitely. This data is completely disconnected from your User ID and is used solely by Mizumi for quality assurance, debugging, and improving the AI's persona.

3. Data Retention

We believe in data minimization. We only keep your data for as long as we have a legitimate reason to.

  • Bot Interaction Data is kept as long as you are using the bot.
  • Anonymous AI Responses are kept indefinitely for long-term analysis.
  • Safety Incident Reports and User-Initiated Reports are permanently and automatically deleted from our systems after a limited period, typically 90 days. This is to ensure we have the necessary information for moderation while minimizing the long-term storage of sensitive data.

4. Payments and Subscriptions

All premium purchases and subscriptions are handled exclusively through our official Patreon page. We use Patreon's API to confirm your subscription status.

  • We never receive or store your credit card details, billing address, or any other sensitive payment information. This is all handled securely by Patreon.
  • We only receive a confirmation from Patreon that includes your subscription tier and linked Discord User ID to grant you premium benefits in the Service.

5. How We Use Your Data

  • To operate and maintain the Mizumi Service.
  • To personalize your experience (e.g., saving your persona choices).
  • To ensure the safety and security of our platform and enforce our Terms of Service.
  • To respond to user support requests.
  • To analyze anonymous, aggregated data to improve the quality of our AI.

6. Data Sharing

We will never sell, rent, or share your personal data for marketing or other commercial purposes. We only share data as strictly necessary for the core operation of the Service, specifically with our AI Partner for message processing, under the strict contractual guarantees detailed in Section 2

7. Your Rights

You have the right to request the deletion of your personal data. You can do this by joining our official support server and contacting us directly. Please note that this will permanently erase all your progress and settings.

8. Contact Us

If you have any questions or concerns about this Privacy Policy, please contact us through our official Discord support server. You can get a link to the server by using the /support command.