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Terms of Service

Last Updated: February 12, 2026

1. Acceptance of Terms

This platform is run by Martin Frelih s.p. (Godovič 54a, 5275 Godovič, Slovenia, VAT ID: 35088982). By accessing and using the Kastellan platform ("Service"), whether through our primary domain or a white-labeled instance managed by one of our partners ("Tenant"), you accept and agree to be bound by the terms and provision of this agreement. If you do not agree to abide by these terms, please do not use this Service.

2. AI Services and Output

2.1 Nature of AI Services. The Service provides access to artificial intelligence tools and capabilities ("AI Services"). You acknowledge that AI Services use probabilistic models to generate content ("Output") based on your inputs ("Input").

2.2 Ownership of Output. As between you and us, you own all right, title, and interest in and to your Input and the resulting Output. You are responsible for ensuring your Input does not violate any third-party rights.

2.3 Accuracy and Reliability. Artificial intelligence is a rapidly evolving field. We work constantly to improve our Services to make them more accurate, reliable, safe, and beneficial. However, given the probabilistic nature of machine learning, use of our Services may in some situations result in incorrect Output that does not accurately reflect real people, places, or facts. You should evaluate the accuracy of any Output as appropriate for your use case, including by using human review of the Output.

3. User Responsibilities

You agree not to use the Service to:

4. Intellectual Property

The Service and its original content (excluding User Input and Output), features, and functionality are and will remain the exclusive property of Kastellan and its licensors. The Service is protected by copyright, trademark, and other laws.

5. Limitation of Liability

To the maximum extent permitted by law, in no event shall Kastellan, its affiliates, agents, directors, employees, suppliers, or licensors be liable for any indirect, punitive, incidental, special, consequential, or exemplary damages, including without limitation damages for loss of profits, goodwill, use, data, or other intangible losses, arising out of or relating to the use of, or inability to use, this Service.

6. Indemnification

You agree to defend, indemnify, and hold harmless Kastellan and its licensee and licensors, and their employees, contractors, agents, officers, and directors, from and against any and all claims, damages, obligations, losses, liabilities, costs or debt, and expenses (including but not limited to attorney's fees), resulting from or arising out of a) your use and access of the Service, by you or any person using your account and password; b) a breach of these Terms, or c) Content posted on the Service.

7. Service Availability and Modifications

We reserve the right to withdraw or amend our Service, and any service or material we provide via the Service, in our sole discretion without notice. We will not be liable if for any reason all or any part of the Service is unavailable at any time or for any period.

8. Governing Law

These Terms shall be governed and construed in accordance with the laws of the United States, without regard to its conflict of law provisions.

9. Contact Information

If you have any questions about these Terms, please contact us at support@kastellan.co.

10. Refund Policy

10.1 14-Day Money-Back Guarantee

We offer a 14-day, no-questions-asked refund policy for first-time purchases of Kastellan subscriptions.

If you are not satisfied with the Service, you may request a full refund within fourteen (14) calendar days of your initial purchase.

Upon approval, the refund will be issued to the original payment method used for the transaction.

After the 14-day period has expired, payments are non-refundable except where required by applicable law.

10.2 Weekly Subscription Billing

Kastellan operates on a recurring weekly subscription basis.

By subscribing, you authorize us to automatically charge your selected payment method once every seven (7) days until you cancel.

You may cancel your subscription at any time through your account settings.

Cancellation will stop future billing, but does not automatically trigger refunds for previous payments outside the 14-day refund window.

10.3 How to Request a Refund

To request a refund within the 14-day period, please contact: support@kastellan.co

Please include:

Refunds will be processed to the original payment method used for the purchase.

10.4 Payment Processing

All payments are processed by our merchant of record, Paddle.com. Refunds are issued in accordance with Paddle's refund policies and processing timelines.


Privacy Policy

Last Updated: February 12, 2026

1. Introduction

Kastellan ("we," "our," or "us") respects your privacy and is committed to protecting it through our compliance with this policy. This policy describes the types of information we may collect from you or that you may provide when you visit our platform, including white-labeled instances operated by our partners.

2. Information We Collect

2.1 Personal Information

We collect information you provide directly to us, such as when you create an account, use our interactive features, or contact support. This may include:

2.2 Usage Data and AI Inputs

We collect data about how you interact with our Service, including:

3. How We Use Your Information

We use the information we collect to:

4. AI and Data Processing

4.1 AI Providers. We utilize third-party artificial intelligence providers (such as OpenAI, Anthropic, and Cloudflare) to process your Inputs and generate Outputs. Your data is transmitted securely to these providers solely for the purpose of generating responses.

4.2 Training Data. We do not use your Inputs or Outputs to train our foundational AI models. Your data remains yours and is used only to provide the Service to you.

5. Data Sharing and Disclosure

We do not sell your personal information. We may share your information in the following circumstances:

6. Data Security

We implement appropriate technical and organizational measures to protect your personal information against unauthorized access, alteration, disclosure, or destruction. This includes encryption of data in transit and at rest, access controls, and regular security assessments.

7. Your Rights

Depending on your location, you may have certain rights regarding your personal information, including the right to access, correct, delete, or restrict the use of your data. To exercise these rights, please contact us at support@kastellan.co.

8. Changes to This Policy

We may update this privacy policy from time to time. We will notify you of any material changes by posting the new privacy policy on this page and updating the "Last Updated" date.

9. Contact Us

If you have any questions about this privacy policy, please contact us at support@kastellan.co.