Terms of Service
Draft — review before publication · 2026-11-12-v1
1. Operator and scope
Sextant (the “Service”) is a scientific research software platform operated by EIDONA BIO (“Eidona”, “we”, “us”), registered with the Paris Trade and Companies Register under number 131 180 168 R.C.S. Paris, with its registered address at 8 avenue des chasseurs, 75017 Paris, France. Contact: contact@eidona.bio. These Terms govern the use of the Service, including its research, analysis, prediction, private-dataset, adapter-training and API capabilities to the extent made available. Features may differ by plan and may be released, modified or withdrawn over time. An experimental “Ask” functionality is not part of the initial offering. Separate privacy and refund policies are linked from the Service.
2. Professional-only eligibility and acceptance
The Service is offered exclusively for professional scientific research, not primarily for personal, household or educational purposes. A person may qualify when conducting independent professional research or when acting within an employment, institutional or professional activity; a declaration alone does not change their actual legal status. You must be at least 18 years old. By registering, you confirm that you meet these conditions, have authority to act for any organization you represent, and accept these Terms. We may request reasonable information about eligibility and may refuse or suspend access where these conditions are not met. These Terms do not seek to remove mandatory protections applying to a person who is legally a consumer despite an eligibility declaration.
3. Individual accounts and security
Each account is personal, non-transferable and intended for a single individual. Credential sharing, resale or transfer is prohibited. Users must safeguard credentials, provide accurate registration information, and promptly report unauthorized access to contact@eidona.bio. A person must not operate multiple accounts to evade plan limits, credit restrictions, suspensions, promotional eligibility or other safeguards. A user acting for an organization remains responsible for complying with any applicable organizational rules.
4. Research use and scientific limitations
Sextant supports exploratory scientific research. It is not intended or validated for medical diagnosis, treatment decisions, patient management, regulated clinical use or other safety-critical decisions. Its evidence, analyses, predictions, models and generated outputs may be incomplete, inaccurate, biased, uncertain or non-reproducible and may change as models and source data evolve. You are responsible for determining fitness for your research purpose, independently validating important findings, complying with research ethics and all applicable laws, and not representing predictions as experimentally observed facts.
5. Permitted uses, attribution and third-party data
Subject to these Terms and any third-party data or software licences, users may use Service outputs in scientific publications, presentations and commercial research and development. When published or externally communicated work includes predictions generated by Sextant, the user must acknowledge Sextant (EIDONA BIO) and, where reasonably available, the model version and date of access. This obligation does not require attribution for outputs that contain no Sextant predictions, unless a third-party source licence independently requires citation. The Service may incorporate or reference public scientific resources with separate attribution, access or reuse conditions, which users must respect.
6. Plans, subscriptions and payments
Plans, allowances, prices, payment cadence and any applicable taxes are displayed on the Service's pricing and checkout pages and confirmed for each purchase; they are not fixed by these Terms. Paid subscriptions renew automatically at the frequency shown at checkout until cancelled. Cancellation stops future renewal and normally takes effect at the end of the then-current paid billing period, after which access returns to the eligible free offering, if any. For payment failures, Eidona currently provides a three-day grace period using remaining allowances, subject to any access restrictions needed for security or fraud prevention. Purchase transactions are processed by Paddle, the merchant of record and authorized reseller; Paddle's buyer terms and payment/refund processes apply to those transactions, while Eidona operates and licenses access to Sextant. Plan or price changes for future purchases do not by themselves retroactively change completed purchases.
7. Training credits and expiry
Training credits represent a limited right to request eligible computational training operations, subject to technical limits and displayed usage rules. They are not money, are not transferable or redeemable for cash, and do not renew automatically. Purchased training credits expire 12 months after they are granted; promotional or registration credits expire four months after they are granted, unless a specific promotion clearly states otherwise. Expiry is determined separately for each credit grant. Credits consumed, reserved or refunded in connection with training jobs are governed by the training workflow's disclosed calculation and failure rules. Available credits normally remain usable after subscription cancellation until their individual expiry. Unused credits are forfeited when the user voluntarily deletes the account or when they expire, subject to non-waivable law and the separately applicable refund policy. Eidona may place reasonable anti-abuse conditions on promotional credits.
8. Refunds and disputes
Except as required by applicable law or Paddle's applicable buyer terms, purchases of subscriptions and training credits are generally non-refundable. Users may contact Eidona about significant service defects, technical failures or dissatisfaction; Eidona may review requests individually and recommend an exceptional full or partial refund or service credit, without creating an entitlement to the same remedy in other cases. The payment seller, Paddle, handles transaction refunds and payment disputes. Any statutory rights remain unaffected. No provision of these Terms prevents a mandatory refund or other remedy.
9. Customer data and permissions
Users retain their rights in datasets and other materials they upload. They grant Eidona a limited, non-exclusive permission to host, process, transform, store and use those materials solely to provide, secure, maintain and support the requested Service features. Eidona will not use private customer datasets to train or improve shared or public models without the customer's express permission. Account-specific model adapters are designed for the relevant account. Users must have lawful authority to upload and use their data and must not upload identifiable patient information or sensitive personal data, including personal health or genetic data, unless Eidona has expressly authorized it in writing under appropriate safeguards. Service outputs do not transfer ownership of Eidona's underlying software, methods, models or third-party materials. Additional personal-data information is provided in the Privacy Policy.
10. Acceptable use and resource management
Users must not attempt unauthorized access, scrape protected systems, circumvent technical controls, reverse engineer restricted software where unlawful, interfere with other users, introduce malicious code, use unlawfully sourced datasets, conduct illegal research activities, or exploit the Service to evade quotas or promotional terms. To protect reliability and fairness, Eidona may monitor consumption and limit request rates, concurrent sessions, heavy workloads, storage or compute usage, including by placing work in queues. Such operational measures may apply even if a displayed allowance remains available.
11. Model changes, retirement and retraining credits
Eidona may update, replace or retire prediction models and related interfaces. For a planned retirement affecting previously trained customer adapters, Eidona will, where reasonably practicable, provide at least 30 days' advance notice and keep the retiring model available during that period. An affected user may claim retraining credits within 60 days after the retirement announcement by contacting contact@eidona.bio or through any claim function made available. The credit grant is capped at the credits originally consumed to train the affected adapter and is intended to assist one comparable retraining on a supported successor model; it does not guarantee identical outputs or fully cover increased compute costs. Approved replacement credits expire four months after grant. Urgent security, legal, safety or technical risks may require faster retirement. This policy does not exclude remedies that cannot lawfully be waived.
12. Availability, changes and support
Sextant is provided on a best-efforts basis without any contractual uptime, latency, response-time or continuous-availability guarantee. Eidona may release, alter, limit or discontinue features for scientific, security, compliance, operational or business reasons. Material adverse changes to paid contractual functionality will be communicated in advance where required by law and may carry termination or other mandatory rights. Eidona normally gives at least 30 days' notice for material changes to these Terms, except where immediate changes are reasonably required for security, legal compliance or urgent technical reasons. Support inquiries may be sent to contact@eidona.bio; no guaranteed support response time applies.
13. Suspension and termination
Eidona may immediately suspend or restrict an account when it reasonably suspects fraud, multiple-account abuse, credential sharing, harmful compute activity, unlawful data, security compromise, payment abuse or another serious violation. Eidona may investigate and discuss the issue after suspension and may restore or terminate access as appropriate. A user may cancel paid renewal using the available billing controls and may request or, once implemented, initiate account deletion. Account deletion immediately disables access; Eidona intends to remove private analyses, uploads and trained adapters promptly from active systems, with residual backup copies following controlled deletion cycles. Necessary billing, fraud-prevention, security and accountability records may be retained for defined, lawful periods, ordinarily up to 12 months for routine security logs unless a longer period is justified. Details appear in the Privacy Policy.
14. Intellectual property and feedback
Eidona and its licensors retain all rights in the Sextant platform, interfaces, software, underlying models, documentation, branding and other protected materials. Users receive a limited, revocable, non-exclusive right to access the Service as permitted by the selected plan and these Terms. Users may freely provide suggestions or feedback, and Eidona may use them to improve the Service without any obligation to compensate the user; this does not authorize reuse of private uploaded datasets.
15. Warranties and liability
To the fullest extent permitted by law, Sextant is provided as available for professional research, without warranties of scientific accuracy, completeness, suitability for a particular experiment or uninterrupted operation. Eidona is not responsible for a user's independent experimental, clinical, commercial or regulatory decisions. To the fullest extent permitted by applicable law, Eidona's aggregate liability arising from the Service is limited to the fees paid for the relevant Service during the 12 months preceding the event giving rise to the claim. This cap and any exclusion do not apply where prohibited by law, including to liability that cannot legally be excluded or limited, such as intentional wrongdoing or other mandatory exceptions. Nothing in these Terms limits mandatory consumer rights where they apply.
16. Governing law, language and contact
These Terms are governed by French law. Disputes between professionals will be submitted to the competent courts of Paris, France, to the extent such a choice is legally valid. Mandatory rules of other jurisdictions and mandatory consumer protections, if applicable, are not excluded. These Terms are provided in English and French, intended to have the same meaning. In case of discrepancy, the parties should seek a consistent interpretation; no language-priority rule overrides mandatory protections. Questions and legal notices may be sent to contact@eidona.bio. The effective version and date will be shown on the published Terms page.