AI diagram agent · Legal
Cookie Policy
Last updated:
The cookies and browser storage used to sign you in, keep a guest session together and preserve preferences or unfinished work.
1. Cookies and similar storage
Cookies are small values stored by your browser and sent with relevant requests. Local storage remains until cleared; session storage generally lasts for the tab session, although browser restore behavior can vary. These technologies are used by AI diagram agent, operated by Terence XU in China.
A cookie can identify a session without containing your name. Where an identifier relates to a person, our Privacy Policy also applies.
2. Storage used by the service
| Name or category | Purpose | Usual duration |
|---|---|---|
| better-auth.session_token | Authenticates your session. HTTPS may add a secure prefix. | Up to 7 days per session period; may refresh during use or end on sign-out. |
| better-auth.session_data and related authentication state | Caches session information and secures sign-in or account linking. Names vary by sign-in method. | Session cache up to 1 hour; sign-in transaction state is short-lived. Session-only options may end with the browser session. |
| diagram-guest | Associates guest conversations and uploads with the correct visitor. | Up to 24 hours. |
| diagram-visitor (local storage) | A random identifier preventing simultaneous first requests from creating separate guest sessions. | Until you or the browser clears it. It does not extend the 24-hour guest access window. |
| diagram-agent:composer-draft (session storage) | Preserves unsent text and completed attachment references. May include a conversation ID in its name. | Until sent, cleared or the tab session ends, subject to browser restore behavior. |
| sidebar_state | Remembers whether a navigation sidebar is open, where used. | Up to 7 days. |
| NEXT_LOCALE and theme preferences, where set | Interface language or presentation preferences. The public interface currently uses English and one color theme. | Locale cookie for the browser session; local presentation storage until cleared. |
Authentication, guest continuity and draft recovery support features you request. Presentation storage serves the relevant setting. These are not used here to build advertising profiles. Expiry may be affected by sign-out, a security action, browser controls or a software update.
3. Optional tracking and external services
The standard site configuration does not enable advertising pixels, session-replay tracking or optional browser analytics. Continued browsing, accepting the Terms of Service or reading this policy is not consent to optional tracking.
If optional tracking is introduced, its provider, purpose and duration must be disclosed and required choices provided before it is enabled. Where consent is required, rejecting or withdrawing it must be possible without disabling the essential service.
Google sign-in and hosted payment pages may use their own storage when you choose those services; their notices and controls apply on those pages. Hosting and security providers can process technical request information without an advertising cookie. See our service-provider disclosures.
4. Your browser controls
Inspect, block or delete cookies and site storage through your browser's privacy settings. Clearing authentication cookies signs you out. Removing guest credentials can make unclaimed work inaccessible; clearing session storage can remove an unfinished draft. Download important results or save eligible guest work first.
Clearing browser storage does not delete server-side conversations, subscriptions or memory. Use the relevant account controls or email [email protected]. Browser privacy signals do not prevent processing necessary to provide a requested feature; applicable statutory opt-out rights remain available.
5. Updates and questions
We update this inventory when storage practices change. The date above identifies this revision. Material new purposes or technologies require additional information and, where applicable, a new choice. Contact [email protected] about unexpected storage or for help exercising a privacy right.
Contact the operator
Terence XU · Individual operator · China
[email protected]
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