Privacy Policy
Last updated: April 13, 2026
This Privacy Policy explains how Theology KB (Sola Quinque) collects, uses, and protects your data when you use our service. We are committed to transparently disclosing all data processing practices in accordance with the spirit of the EU General Data Protection Regulation (GDPR).
1. Data We Collect
- Search queries: the questions you enter in the search box
- Hashed IP addresses: used for rate limiting, processed with SHA-256 and a salt, not reversible to the original IP
- AI-generated answers and reference sources
- Response times and error logs
- Basic analytics (page views collected via Cloudflare / Vercel)
- Cookies: theme preference (dark/light mode), locale preference (zh/en)
2. How We Use Your Data
- To provide AI-powered theological search results
- To improve service quality and performance
- To prevent abuse (rate limiting)
- We do NOT sell your data
- We do NOT build user profiles
3. Third-Party Services
We use the following third-party data processors to provide this service. Your data may be transmitted to these services for processing:
- OpenAI (api.openai.com) — Your search queries are sent to OpenAI's GPT models to generate answers.
OpenAI Privacy Policy - Cohere (api.cohere.com) — Your queries and retrieved text passages are sent to Cohere for relevance ranking.
Cohere Privacy Policy - Vercel (vercel.com) — Web hosting and serverless functions.
Vercel Privacy Policy - Railway (railway.app) — Database hosting.
Railway Privacy Policy - Cloudflare (cloudflare.com) — CDN, DDoS protection, SSL.
Cloudflare Privacy Policy
4. Data Retention
- Search logs are retained for 90 days, then automatically deleted
- No personal accounts are created (login is disabled)
- Theme and locale preferences are stored locally in your browser
5. Your Rights
- Right to access: contact us to request a copy of data associated with your IP
- Right to erasure: contact us to request deletion of your search history
- Right to object: you can stop using the service at any time
- Contact: solaquinque@gmail.com
6. Cookies
- Essential: locale preference (zh/en), theme preference (dark/light)
- Analytics: Cloudflare basic analytics (anonymized)
- No third-party tracking cookies
- No advertising cookies
7. Children's Privacy
This service is not directed at children under 13. We do not knowingly collect personal data from children under 13. If you believe we have inadvertently collected data from a child, please contact us so we can delete it.
8. Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated "Last updated" date above. We encourage you to review this policy periodically to stay informed.
9. Contact Us
If you have any questions about this Privacy Policy or wish to exercise your data rights, please contact us at: