Terms of service

Version 1.1 · effective 2026-10-13

1. Who we are

These terms govern your use of the Thalius Hippocampus cloud service (the Service), provided by Thalius AI AB, a Swedish limited company (organisation number 559528-5635, VAT SE559528563501), Stockholm, Sweden (“Thalius”, “we”, “us”). Contact: [email protected].

By creating an account, or by using the Service on behalf of an organisation, you accept these terms. If you accept them for an organisation, you confirm that you may bind it, and “you” means that organisation.

2. The Service

Hippocampus is a memory layer for organisations. You upload documents; the Service reads them once, organises them into a structured knowledge base (a wiki of summaries anchored to source pages), and answers questions with citations to the passages each answer was generated from. Questions the documents cannot answer are refused rather than guessed. The Service is available through the web application, a REST API and an MCP server.

We may improve and change the Service. We will not remove a core function of a paid plan during a paid period without the notice in section 14.

3. Plans

Plan	What you get	Price
Free	One user, a tenant with default settings, a monthly credit allowance	Free
Starter	Your own tenant that you administer, a monthly credit allowance, extra users with their own credits, extra credits on demand	Monthly or annual subscription
Corporate	Custom subscription, negotiated terms, deployment options including a dedicated EU stack	By agreement

Current prices, allowances and limits are published on the pricing page and form part of these terms. A Corporate order form or agreement takes precedence over these terms where they conflict.

4. Credits and metering

Usage is metered in credits. The tariff (what ingesting a page, asking a question or calling the API costs in credits) is published on the pricing page, and the price of an action is shown before you take it.
Credits are a unit of account for the Service only. They have no cash value, cannot be transferred or sold, and are not refundable except where the law requires.
Monthly allowances renew at the start of each billing month. Included credits do not roll over. Added credits never expire and are used after the included credits.
On Free and Starter the meter fails closed: when credits run out, ingest and metered questions pause until credits are added or the plan changes. Reading the wiki stays available. We never charge an overage silently.
On Corporate, overage is invoiced monthly as agreed and does not lock users out.
A document re-uploaded unchanged is recognised as a duplicate and is not charged again.

5. Accounts

You must give accurate registration information and keep your sign-in credentials confidential. You are responsible for activity under your account.
Starter and Corporate administrators decide who has access to their tenant and what each user and agent may read. Permissions are enforced by the Service.
You must be at least 18 years old, and the Service is intended for professional use.

6. Payment

Starter is billed in advance, monthly or annually, in euros. Prices exclude VAT. VAT applies to all customers, except EU business customers with a verified VAT ID, who are invoiced under the reverse-charge mechanism.
Payments are handled by the payment provider named at checkout. We do not store full card details.
Subscriptions renew automatically until cancelled. You can cancel at any time in tenant administration. A monthly plan stays active to the end of the paid month. If you cancel an annual plan, we refund the unused whole months.
If a payment fails, we tell you. Until it is resolved, paid features may be paused; your content stays readable.

7. Your content

You own your content. Documents you upload, the questions you ask and the knowledge base derived from them (Customer Content) remain yours.
You grant us a limited licence to host, copy, process and transmit Customer Content only as needed to provide, secure and support the Service for you.
We do not train models on Customer Content. Model providers receive only the fragments needed for a specific request, transiently, as described on the sub-processors page.
You confirm that you have the rights and legal basis to upload Customer Content and to have it processed as described.
Where Customer Content contains personal data, we process it as your processor under the data processing agreement, which forms part of these terms.

8. Acceptable use

You must not:

upload content you have no right to use, or content that is unlawful;
use the Service to make automated decisions with legal or similarly significant effects on individuals without human review;
try to access another tenant’s data, probe or bypass security controls, or disrupt the Service;
resell the Service or run automated load against it beyond the published API limits, unless agreed in writing;
use the Service to build a competing product by copying its features or outputs systematically.

We may suspend access that breaks this section, limiting the suspension to what is needed and telling you why, unless the law or an active security incident prevents it.

9. AI-generated output

Answers and summaries are generated by AI models from your documents. Every answer cites its sources so it can be checked, but output can still be incomplete or wrong. You are responsible for reviewing output before relying on it, especially for legal, medical, financial or safety decisions. See the AI Act disclosure.

10. Availability and support

We aim for high availability but do not guarantee uninterrupted service on Free and Starter. Planned maintenance is announced in advance where practical. Support is by email to [email protected] on Free and Starter; service levels for Corporate are set in the Corporate agreement.

11. Confidentiality and security

We protect Customer Content with the measures described on the security page, including per-document encryption bound to your tenant and enforced access control. Our staff access Customer Content only when you ask for support or when needed to keep the Service secure, and every such operation is logged.

12. Liability

Nothing in these terms limits liability that cannot be limited by law, including for gross negligence or wilful misconduct.
Neither party is liable for indirect or consequential loss, such as lost profit, revenue or data, except for breach of confidentiality or your obligations in section 8.
Our total liability in any 12-month period is limited to the fees you paid us in that period, and to €100 for Free.
Free is provided free of charge and as is.

13. Term and termination

These terms apply while you have an account.
You can delete your account or tenant at any time. We can terminate for material breach not remedied within 30 days of notice, or immediately for serious breach of section 8.
Export before you leave: the knowledge base is open Markdown and can be exported at any time while the account is active. Export what you need before deleting the account or before the end of the paid period.
After termination, Customer Content is deleted from active systems within 30 days and from backups within 90 days, as set out in the DPA.

14. Changes to these terms

We may update these terms. Material changes are announced on this page and by email at least 30 days before they take effect. If you do not accept a change, you may cancel before it applies; for a prepaid annual plan we refund the unused whole months, as for any cancellation.

15. Law and disputes

These terms are governed by Swedish law. Disputes are settled by the Stockholm District Court (Stockholms tingsrätt), unless mandatory consumer law gives you another forum.

16. Contact

Thalius AI AB, Stockholm, Sweden · [email protected] · Corporate route