Terms of Service

Draft of 1 September 2026 — not yet in force.

The Greek version of these terms is the legally binding text. This English version is provided for convenience only; where the two differ, the Greek version prevails.

1. Who these terms bind

These terms are an agreement between «TO CONFIRM: registered company name, GEMI number, VAT number and registered address» ("Didache", "we") and the organization that has subscribed to the service (the "Customer", "you").

The Customer's employees and contractors who are given accounts are "Authorized Users". Authorized Users do not accept these terms individually; the Customer accepts them on their behalf and is responsible for their compliance.

Accounts are created by invitation from the Customer. There is no public self-service registration.

2. What we provide

Didache is a hosted platform for teaching AI prompting skills, comprising learning tracks, challenges with automated scoring, a prompt library, spaced-repetition practice, progress tracking, and reporting for managers and administrators (the "Service").

The scope of your subscription — the number of Authorized Users, the term, the fees, and anything agreed specifically with you — is set out in a separate order form or written agreement (the "Order Form"). Where the Order Form and these terms conflict, the Order Form prevails.

We grant the Customer a non-exclusive, non-transferable right to access and use the Service during the term, for its own internal training purposes only.

3. Accounts and access

The Customer decides who receives an account and which roles they hold. The Customer is responsible for keeping that list accurate, for removing access when someone leaves, and for everything done through its accounts.

Accounts are personal to the Authorized User they are issued to and must not be shared. Credentials must be kept confidential, and the Customer must tell us promptly if it believes an account has been compromised.

We may suspend an account or the Service where necessary to protect the Service, other customers, or to comply with the law. Where we can, we will tell you first; where we cannot, we will tell you as soon as possible afterwards.

4. Acceptable use

The Customer and its Authorized Users must not: use the Service unlawfully or to produce unlawful material; upload malware, or attempt to breach, probe or circumvent the security of the Service; attempt to access another organization's data; reverse engineer the Service except to the extent the law permits; resell, sublicense or provide the Service to anyone outside the Customer's organization; or use the Service to build a competing product.

Authorized Users must not enter personal data about third parties into prompts, submissions or attachments beyond what the exercise genuinely requires. These are free-text fields and their contents are sent to our AI provider.

Attachments are limited in size and length by the Service. The Customer is responsible for the content of anything uploaded.

5. AI features and their limits

Parts of the Service generate text and score submissions using a third-party AI provider. When you use these features we send the provider the challenge title and brief, the scoring rubric, the prompt written by the Authorized User, and the response produced from it. We do not send names, email addresses or user identifiers.

AI output is probabilistic. It can be wrong, incomplete or inconsistent between attempts, and identical input may produce different output. The Service is a training tool, and output must not be relied on as professional advice or as a statement of fact.

The Customer may select which AI model its organization uses where the Service offers a choice. Different models behave differently, and we do not warrant any particular result from any model.

Use of the AI features is subject to the usage policies of our AI provider. The Customer must ensure its Authorized Users comply with them, and we may act on any requirement imposed on us by that provider.

6. Use of scores and reports

Scores, rankings, activity reports and exports produced by the Service describe performance on training exercises. They are not an assessment of an individual's competence, conduct or value as an employee.

The Customer must not use them as the sole basis for a decision that produces legal effects for an individual or similarly significantly affects them, including decisions about hiring, promotion, discipline, remuneration or dismissal. Where such information forms part of a decision, the Customer is responsible for ensuring meaningful human involvement.

The Customer is responsible for telling its Authorized Users what is monitored and reported, and for having a lawful basis for that monitoring.

7. Content you create

As between the parties, the Customer owns all content created by it and by its Authorized Users through the Service, including learning tracks it authors, prompts saved in the prompt library, submissions, attachments and results ("Customer Content"). This includes content an Authorized User marks as private to themselves.

The Customer grants us a non-exclusive licence to host, copy, transmit, display and process Customer Content, and to disclose it to the sub-processors listed in our privacy policy, solely to provide and support the Service.

We do not use Customer Content to develop, train or improve any artificial intelligence model, whether ours or a third party's, and we do not permit our AI provider to do so. We do not use Customer Content for any purpose other than providing the Service to the Customer.

The Customer is responsible for the legality of Customer Content and for having the rights necessary to grant the licence above.

8. Our content and intellectual property

The Service, its software, design, and any learning content, rubrics or prompts we publish across the platform remain our property or that of our licensors. Nothing in these terms transfers ownership of them.

Where the Service offers platform-published prompts or tracks, we grant the Customer a non-exclusive licence to use them for internal training during the term. Where the Service allows a copy of a platform prompt to be taken into the Customer's own library, the copy may be edited and used internally, but the Customer does not thereby acquire ownership of the original or the right to distribute it outside its organization.

Feedback the Customer gives us about the Service may be used freely and without obligation.

9. Data protection

Where we process personal data on the Customer's behalf, the Customer is the controller and we are the processor. That processing is governed by a data processing agreement between us, which forms part of this agreement.

Our privacy policy explains what we do with personal data for which we are the controller.

Each party will comply with applicable data protection law in performing this agreement.

10. Confidentiality

Each party may receive information from the other that is confidential. Each will use the other's confidential information only to perform this agreement, will protect it with at least reasonable care, and will not disclose it except to staff and advisers who need it and are bound by equivalent obligations.

This does not apply to information that is public through no fault of the recipient, was already known to it, or must be disclosed by law — in which case the recipient will, where lawful, give notice first.

11. Fees

Fees, the billing period and payment terms are set out in the Order Form. Fees are exclusive of VAT and other applicable taxes.

Invoices are payable within the period stated in the Order Form. If an undisputed invoice remains unpaid, we may suspend access after giving reasonable written notice.

«TO CONFIRM: whether fees may be increased on renewal, and on what notice»

12. Term and termination

This agreement runs for the term set out in the Order Form and renews as that document provides.

Either party may terminate for material breach if the other has not remedied it within 30 days of written notice, or immediately if the other becomes insolvent.

On termination, access to the Service ends. Customer Content is returned or deleted in accordance with the data processing agreement. Fees already incurred remain payable; «TO CONFIRM: whether prepaid fees are refunded on termination for our breach»

Sections that by their nature should survive termination do so, including confidentiality, ownership, liability and governing law.

13. Availability and support

We will use commercially reasonable efforts to keep the Service available, but we do not commit to a specific level of uptime and the Service is not guaranteed to be uninterrupted or error-free.

We may carry out maintenance, and will try to schedule work likely to cause interruption outside normal working hours where practicable.

Support is provided by email to info@didache.ai. «TO CONFIRM: support hours and target response times, if any are to be committed»

Neither party is liable for failure to perform caused by events beyond its reasonable control, for as long as that event continues.

14. Warranties and disclaimers

We warrant that we will provide the Service with reasonable skill and care, and that we have the right to grant the rights we grant here.

Beyond that, and to the fullest extent the law allows, the Service and all AI output are provided "as is", without warranty of any kind, express or implied, including any implied warranty of merchantability, fitness for a particular purpose, accuracy, or non-infringement.

Nothing in these terms excludes liability that cannot lawfully be excluded, including for death or personal injury caused by negligence, or for fraud.

15. Limitation of liability

Neither party is liable for indirect or consequential loss, nor for loss of profit, revenue, anticipated savings, goodwill or data, however arising.

Each party's total aggregate liability arising out of or in connection with this agreement is limited to the fees paid or payable by the Customer in the twelve months preceding the event giving rise to the claim.

These limits do not apply to the Customer's obligation to pay fees, to either party's breach of confidentiality, or to liability that cannot lawfully be limited.

16. Indemnities

The Customer will indemnify us against claims arising from Customer Content, from use of the Service in breach of these terms, or from the Customer's use of scores and reports in a manner section 6 prohibits.

«TO CONFIRM: whether Didache gives an intellectual-property infringement indemnity to the Customer, and on what terms — this is usually expected by enterprise buyers and is a commercial decision»

17. Changes

We continue to develop the Service and may change its features. We will not materially reduce the core functionality the Customer subscribed to during a paid term.

We may update these terms. Where a change materially affects the Customer's rights or obligations, we will give notice «TO CONFIRM: notice period, typically 30 days» before it takes effect, and the Customer may terminate before it does if it does not accept the change.

18. Governing law and jurisdiction

This agreement is governed by Greek law, and the courts of Athens have exclusive jurisdiction. «TO CONFIRM: confirm Greek law and Athens jurisdiction, and whether any customer segment requires different terms»

19. General

Neither party may assign this agreement without the other's consent, except to a successor of its business.

This agreement, the Order Form and the data processing agreement are the entire agreement between the parties on this subject and replace any earlier discussions.

If any provision is found unenforceable, the rest continues in force.

A failure to enforce a right is not a waiver of it. Notices must be in writing and sent to the addresses in the Order Form.

Nothing here creates a partnership, agency or employment relationship, and there are no third-party beneficiaries.

20. Contact

Questions about these terms: info@didache.ai.

«TO CONFIRM: postal address for formal notices»