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VaultCrux Terms of Use

Last updated: 28 February 2026

1. Introduction

These Terms and Conditions (“Terms”) govern your access to and use of VaultCrux, including frontdoor pages, API endpoints, MCP surfaces, downloadable client software/local binaries, and associated documentation (collectively, the “Platform”). The Platform is operated by CueCrux Limited, a company incorporated and registered in England and Wales (“CueCrux”, “we”, “our” or “us”). By accessing or using any part of the Platform you accept these Terms and agree to comply with all applicable laws and regulations. If you do not agree, you must not access or use the Platform.

VaultCrux offers evidence-first AI knowledge tooling for ingest, retrieval, citations, and usage-metered workflows. These tools rely on frontier AI models and supporting infrastructure provided by third parties. Because AI outputs can be inaccurate or incomplete and may reflect biases in training data, you should treat all outputs as informational only and independently verify critical information. CueCrux does not offer professional advice (legal, medical, financial or otherwise) and your reliance on outputs is at your own risk.

2. Eligibility and Account Registration

Age Requirements. You must be at least 18 years old (or the age of majority in your jurisdiction) to register for or use the Platform. By creating an account or using the Platform you represent that you meet this requirement and have the legal capacity to enter into a contract. If you are a minor under local law, you must have verifiable consent from your parent or legal guardian.

User Accounts. Some Platform features require you to create a user account. You agree to provide accurate, current and complete information during registration and to keep your credentials confidential. You are responsible for all activities that occur under your account and you must not share, sell or transfer your credentials to anyone else. You may not create multiple accounts to circumvent Platform restrictions.

Organisation Accounts. If you create an account on behalf of a company, organisation or other entity, you represent that you have authority to bind that entity to these Terms. You must ensure that each authorised user under an organisation account is aware of and complies with these Terms.

3. Our Services and Licence

3.1 Limited licence

Subject to your compliance with these Terms, CueCrux grants you a limited, revocable, non‑exclusive, non‑transferable and non‑sublicensable licence to access and use VaultCrux (the “Platform”) for lawful personal or internal business purposes.

All rights not expressly granted are reserved.

3.2 Access restrictions

You agree not to (and not to allow others to):

  • use the Platform in any way that violates applicable laws, regulations, court orders, or third‑party rights (including privacy, data protection, intellectual property, export control and sanctions laws);
  • provide as input any content or personal data for which you lack the necessary rights, consents, or lawful basis;
  • upload or share personal information of children under the digital age of consent (13 in the UK) or other protected classes, except where you have a lawful basis and the Platform feature explicitly supports such processing;
  • use the Platform to create or disseminate illegal, fraudulent, defamatory, hateful, discriminatory, violent, harassing, obscene or otherwise harmful content;
  • use the Platform for automated decision‑making in high‑impact domains such as employment, credit, insurance, housing, education, legal services or healthcare, or any other context where decisions may have significant effects on a person’s rights or access to services;
  • use the Platform to engage in social scoring or manipulative practices prohibited under applicable law, including deploying subliminal or deceptive techniques, exploiting vulnerabilities based on age or disability, inferring sensitive attributes, or conducting social scoring;
  • use the Platform to train, develop or improve other machine‑learning models unless the applicable third‑party model provider expressly permits such use;
  • attempt to reverse engineer, decompile, disassemble or otherwise discover source code, models, or underlying components of the Platform, or circumvent security features, rate limits or usage caps;
  • resell, rent, lease, sublicense, or make the Platform available to third parties as a standalone service (except where a plan explicitly supports adding authorised team seats within your own workspace);
  • use VaultCrux as a marketplace, broker, or checkout channel for third-party sellers to list or sell products/services to customers;
  • access the Platform from any country or region subject to comprehensive sanctions or export control restrictions, or if you are on any applicable sanctioned party list; and
  • use automated bots, scripts or scraping tools to extract content or data from the Platform beyond normal user interactions or in violation of our rate limits.

3.3 AI transparency and high‑risk use

The Platform uses generative AI and other automated systems. You may not mislead anyone into believing AI‑generated content came from a human, and you must clearly disclose AI‑generated content where required by law.

VaultCrux is not designed for, and must not be used as, a “high‑risk” system in regulated contexts (for example, high‑risk AI systems as defined under the EU AI Act). If you use the Platform in any regulated context, you are responsible for implementing appropriate human oversight and risk management measures.

3.4 Third‑party services and flow‑down terms

The Platform relies on frontier AI models and supporting infrastructure provided by third parties. We may pass through (or require you to comply with) certain restrictions and obligations from our upstream providers. The Platform may also allow you to connect to third‑party services (for example, cloud storage or productivity tools). CueCrux is not responsible for such third‑party services, which are governed by their own terms and privacy practices. You are solely responsible for reviewing and complying with those terms.

4. Inputs, Outputs and Intellectual Property

User Inputs. When you submit content (e.g., questions, prompts, documents, code, data, files or other materials) to the Platform (“Inputs”), you retain any ownership rights you hold in those Inputs. By submitting Inputs you grant CueCrux, our affiliates and subcontractors a worldwide, royalty‑free licence to use, reproduce, modify, display and process your Inputs solely to operate, provide, maintain, secure, and improve the Platform and comply with applicable laws. We do not use your private Inputs to train public foundation models without your explicit consent. You represent that you have all necessary rights and lawful basis to provide the Inputs and that they do not violate any law or third‑party rights.

Generated Outputs. When you receive content generated by the Platform (“Outputs”), you own your Outputs (subject to applicable law and third‑party rights) and may use them for any lawful purpose. You acknowledge that Outputs may include material protected by third‑party intellectual property rights (e.g., copyright) and may be inaccurate, incomplete or biased. You must verify Outputs before relying on them. CueCrux disclaims all warranties regarding Outputs and does not represent that you have the right to use Outputs beyond these Terms. You grant CueCrux a licence to store and process your Outputs solely to operate, secure, and improve the Platform (for example, to provide the Outputs back to you, to debug errors, and to improve safety controls). Where possible we use aggregated or de-identified telemetry rather than raw content.

Feedback. If you provide feedback, suggestions or ideas regarding the Platform (“Feedback”), you grant CueCrux a perpetual, irrevocable, worldwide licence to use and exploit the Feedback without any obligation to you.

CueCrux Content. The Platform and all materials therein (including software, models, algorithms, text, images, audio, video, design elements and trademarks) are owned by CueCrux or its licensors and are protected by intellectual property laws. You may not copy, modify, distribute, sell or lease any part of the CueCrux Content except as permitted under these Terms.

Third‑Party Intellectual Property. You must ensure that any Inputs you provide do not infringe third‑party rights. You acknowledge that certain third‑party providers may prohibit using outputs to create competing models and require flow‑down of such restrictions. You agree to comply with those restrictions and indemnify CueCrux against claims arising from your failure to do so.

5. User‑Generated Content and Community Standards

The Platform may allow you to post, share or store content such as messages, comments, code snippets, documents or other materials (“User‑Generated Content”). While CueCrux is not obligated to monitor all User‑Generated Content, we reserve the right to remove, block or edit content at our discretion.

Prohibited Content. You must not upload, post or share User‑Generated Content that is illegal, fraudulent, defamatory, obscene, harassing, threatening, hateful or discriminatory; infringes any intellectual property, privacy or other rights; contains malware or viruses; encourages violence or self‑harm; promotes terrorism or other criminal activities; discloses personal data of others without consent; or otherwise violates these Terms or any applicable law.

Other Prohibited Behaviour. You must not bully, intimidate or harass other users; impersonate others; exploit minors; create deepfakes or manipulated media intended to deceive; or engage in any conduct that violates consumer protection laws or regulations.

Licence to CueCrux. By posting User‑Generated Content you grant CueCrux a non‑exclusive, worldwide, royalty‑free licence to use, reproduce, modify, distribute and display that content for the purpose of operating and improving the Platform. You retain ownership of your content and represent that you have the right to grant this licence.

Reporting and Enforcement. Users may report violations of this section through the Platform’s reporting mechanisms. CueCrux will investigate and may remove content, suspend or terminate accounts, or take other appropriate actions. We respond to properly submitted takedown notices and may suspend repeat infringers. We also cooperate with law enforcement when required.

6. Privacy and Data Protection

CueCrux processes personal data in accordance with the UK General Data Protection Regulation (UK GDPR), the Data Protection Act 2018 and other applicable data protection laws. Where you use VaultCrux under an organisation/workspace, your organisation is typically the controller of the content you upload and queries you run, and CueCrux acts as a processor for that content (subject to any applicable data processing agreement). The following principles apply:

Lawful Basis and Fairness. We only collect personal data when we have a lawful basis such as consent, contractual necessity or legitimate interests and ensure that our processing is fair, lawful and transparent. We do not process personal data for incompatible purposes and take steps to minimise any adverse impact.

Transparency and Rights. We provide accessible privacy information describing the types of data we collect, how we use it and the rights available to individuals. You have the right to access, rectify, erase, restrict or object to the processing of your personal data and to request data portability. To exercise these rights, contact privacy@cuecrux.com.

Data Accuracy and Security. We take reasonable steps to ensure personal data is accurate and implement technical and organisational measures to protect it against unauthorised access, loss or damage. We may aggregate and anonymise data for analytics and service improvement (for example, reliability and safety monitoring).

International Transfers. Where we transfer personal data outside the UK or EEA, we ensure that adequate safeguards are in place (e.g., standard contractual clauses or other lawful mechanisms).

Cookies and Similar Technologies. We use essential cookies/session identifiers to operate the Platform (for example, to keep you signed in and to protect the service). For details (including any optional analytics), see the VaultCrux Privacy Notice.

Children’s Privacy. We do not knowingly collect personal data from children under 13 (or the applicable age of digital consent) and prohibit users from providing such data.

7. AI Transparency, Safety and Compliance

Transparency to End‑Users. Where required by applicable law, we will provide clear notices when AI is used and may require users to accept additional click‑through terms before accessing AI features. You must not misrepresent AI‑generated content as being generated by a human.

Prohibited AI Practices. CueCrux will not build or deploy AI systems that engage in manipulative techniques, exploit vulnerabilities related to age or disability, infer sensitive attributes or perform social scoring. We expect users not to request or use the Platform to perform any such prohibited activities.

High‑Risk Domains and Decision‑Making. The Platform is not intended for use in making decisions that determine a person’s eligibility, selection or access within high‑impact domains such as employment, credit, insurance, housing, education, social services or legal services. Use of automated decision systems in these contexts is subject to specific regulations. You agree not to use the Platform to make or inform high‑impact decisions or to circumvent legal obligations, including conducting background checks, credit scoring or hiring recommendations.

Bias, Discrimination and Fairness. You acknowledge that AI outputs may reflect biases present in training data and that unrepresentative datasets or flawed design can lead to discriminatory or unfair outcomes. You must not use the Platform to discriminate against or otherwise harm individuals based on protected characteristics. If you deploy our tools in regulated contexts, you are responsible for ensuring compliance with all anti‑discrimination laws and for conducting necessary audits or bias testing.

Change of Law. AI law is evolving rapidly. Should a change in law or regulation materially impact our ability to provide the Platform or increase the cost of compliance, we reserve the right to suspend or terminate affected services or amend these Terms. We will provide reasonable notice where practicable.

8. Export Controls and Sanctions

The Platform, including the underlying software and documentation, may be subject to export control and economic sanctions laws of the United States, the United Kingdom, the European Union and other jurisdictions. You agree to comply with all applicable export and sanctions regulations and to obtain any required licences or authorisations.

Destination Restrictions. You may not access or use the Platform in or from countries or regions subject to comprehensive sanctions or embargoes (for example, Cuba, Iran, North Korea, Syria, Crimea/Sevastopol, the Donetsk and Luhansk regions, or non‑government controlled areas of Kherson and Zaporizhzhia). We may block access from these jurisdictions.

End‑User and End‑Use Restrictions. The Platform is not available to entities or individuals on any sanctions list (such as the U.S. Specially Designated Nationals list, EU sanctions lists or other government lists). The Platform may not be used for prohibited end‑uses, including activities related to the development, design, manufacture or production of nuclear, chemical or biological weapons or other military end‑uses. Where licences or authorisations are required for certain end‑uses (for example, certain civil nuclear or energy‑sector applications), you are responsible for obtaining them.

Due Diligence. We reserve the right to conduct screening and due‑diligence checks on your transactions and may require you to provide information necessary to ensure compliance with export control and sanctions laws. Access may be suspended or terminated if you fail to comply with these requirements.

9. Payment, Subscription and Fees

CueCrux may offer paid subscription plans and optional paid features for VaultCrux. Plan features, limits, and prices are described on the Platform (for example on our pricing page) or in a separate written agreement.

9.1 Merchant of Record (Paddle)

Where you purchase a subscription or paid feature through our checkout, your payment is processed by Paddle (Paddle.com Market Limited or another Paddle group entity, depending on your location) (“Paddle”), acting as our Merchant of Record.

This means, for those transactions:

  • Paddle is the seller of record and your receipt/invoice is issued by Paddle.
  • Your bank/card statement may show a descriptor similar to PADDLE.NET* COMPANYNAM (or PAYPAL *PADDLE.NET for PayPal payments).
  • Your payment transaction is governed by the Paddle buyer terms presented at checkout, in addition to these Terms (which govern your use of VaultCrux itself).

9.2 Subscriptions, renewals, cancellations, and plan changes

If you purchase a subscription, it may renew automatically unless you cancel.

  • How to cancel: Use the “manage subscription” link in your Paddle receipt, or visit Paddle’s buyer support portal (https://paddle.net).
  • Timing: To avoid being charged for the next billing period, Paddle’s checkout terms may require cancellation at least 48 hours before the end of the current billing period.
  • Access after cancellation: Unless otherwise stated at checkout, cancellation typically stops renewal and you retain access until the end of the current paid period.

We may change plan structures, prices, or included features from time to time. Where required by law or by our payment partners, we will provide notice of material changes.

9.3 Refunds and chargebacks

Refunds and cancellations for Paddle purchases are handled by Paddle under the terms shown at checkout.

  • Consumer cancellation right (14 days): If you are a consumer, you may have a right to cancel your initial purchase within 14 days, starting the day after the transaction is completed. For subscriptions, the consumer cancellation right typically applies to the initial subscription purchase, not each automatic renewal.
  • Other refund requests: Outside that consumer cancellation right, refund requests are reviewed by Paddle on a case-by-case basis and may be refused (for example in cases of fraud or refund abuse).
  • Time limits: Paddle may impose processing time limits for certain refund requests (for example, a 60‑day limit in some refund contexts). Submit requests promptly.

Nothing in these Terms limits your statutory rights where a product is faulty, not as described, or not fit for purpose.

9.4 Team seats and billing responsibility

VaultCrux may offer organisation/workspace features, including multi-seat access on certain plans. If you are the owner or administrator of a workspace:

  • you are responsible for adding/removing seats, managing roles, and ensuring each seat user complies with these Terms;
  • you represent that you have permission to provide the email addresses of invited users; and
  • you accept responsibility for fees associated with your workspace, including seat-based charges and plan changes, as shown at checkout/invoices.

9A. Usage Units and usage-based charges

VaultCrux uses internal Usage Units to meter certain features (for example, proof jobs, monitoring actions, storage add-ons, or other consumption-based services). Usage Units are not money, not stored value, not e-money, and have no cash value.

Unless we expressly state otherwise in writing:

  • Usage Units are non-transferable, non-refundable, and non-redeemable for cash.
  • Usage Units are provided as part of subscription allowances and usage policies presented at checkout or in plan documentation.
  • Usage Unit costs for features and usage rules may change over time (for example, to reflect infrastructure costs or to prevent abuse).
  • If a transaction is refunded, any Usage Units or entitlements issued as part of that transaction may be reversed. If Usage Units were already spent, access may be suspended until the balance is settled or adjusted.

9B. Fraud prevention and abuse controls

We and our payment partners (including Paddle) may apply controls designed to prevent fraud, chargebacks, payment abuse, and automated misuse of VaultCrux. This may include rate limiting, anomalous activity detection, and requesting additional verification for certain actions.

We may suspend or terminate access where we reasonably believe a transaction or account activity is fraudulent, abusive, or creates security or legal risk.

9C. Usage Allowance Add-ons

You may modify your subscription to include one or more Usage Allowance Add-ons. Each add-on is a recurring subscription modification that increases your monthly Usage Unit entitlement by a stated amount for the duration of the add-on.

Usage Allowance Add-ons are subject to the following terms:

  • Recurring billing. Each add-on is billed as a recurring charge on your existing billing cycle (monthly or annual, matching your base subscription). The add-on renews automatically alongside your subscription unless you cancel it.
  • Entitlement, not stored value. An add-on increases your Usage Unit allowance for each billing period. It does not create a balance, stored value, or prepaid entitlement beyond the current billing period. Unused Usage Units from an add-on allowance do not roll over to subsequent billing periods unless expressly stated otherwise in plan documentation.
  • Effective date. When you add or remove a Usage Allowance Add-on mid-cycle, the change takes effect as described at checkout. Any pro-rated adjustments are calculated by Paddle (our Merchant of Record) in accordance with its checkout terms.
  • Cancellation. You may cancel a Usage Allowance Add-on at any time through the same subscription management mechanism described in Section 9.2 (for example, via your Paddle receipt or at https://paddle.net). Cancellation stops renewal of the add-on and your allowance reverts to the base subscription level at the end of the current paid period.
  • Refunds. Refunds for Usage Allowance Add-ons follow the same policy as subscription refunds (see Section 9.3 and our Refund Policy). If a refund is granted for an add-on, any additional Usage Units issued under that add-on may be reversed in accordance with Section 9A.
  • Interaction with base subscription. If you cancel or downgrade your base subscription, any active Usage Allowance Add-ons associated with that subscription are also cancelled at the end of the current paid period, unless otherwise stated at checkout.
  • Changes to add-on pricing. We may change add-on pricing from time to time. Where required by law or by our payment partners, we will provide notice of material changes before they take effect.

9.5 Taxes and billing queries

Any applicable taxes will be shown at checkout for Paddle purchases. For billing questions (including invoices, VAT, refunds, cancellations or chargebacks), you can contact us at support@cuecrux.com and we will help route your request, but Paddle remains responsible for processing refunds for Paddle purchases.

9.6 Non-payment

We may suspend or terminate your access if payment is late, reversed, or cannot be processed.

10. Beta Features and Trials

We may offer beta, pilot or trial features for evaluation. Such features may be experimental, provided “as is” and may change or be withdrawn at any time. We may collect feedback and usage data for the purpose of improving these features. You acknowledge that beta features may be subject to additional terms and that we do not guarantee their performance.

11. Disclaimers

No Warranty. The Platform, CueCrux Content and all Outputs are provided “as is” and “as available”. CueCrux disclaims all warranties, whether express or implied, including warranties of merchantability, fitness for a particular purpose, non‑infringement, accuracy and quiet enjoyment. We do not warrant that the Platform will operate without interruptions or errors or that Outputs will be accurate, reliable or suitable for your purposes.

Information Only. Outputs and content generated by the Platform are for informational purposes only. They do not constitute professional advice (including legal, medical, financial or investment advice). You should not rely on Outputs without independent verification and professional consultation. We are not responsible for any actions you take based on Outputs.

Third‑Party Content and Services. CueCrux is not responsible for third‑party content, services or links. Accessing any third‑party service is at your own risk. CueCrux disclaims any liability for losses or damages arising from your interactions with third‑party services.

Accessibility. We strive to meet accessibility standards such as WCAG 2.1 AA and provide features such as screen‑reader support, keyboard navigation and alt text for images. However, we cannot guarantee that the Platform will always meet all accessibility requirements or that third‑party content integrated into the Platform will be fully accessible.

12. Limitation of Liability

To the maximum extent permitted by law, CueCrux and its affiliates, directors, officers, employees, agents and licensors shall not be liable for any indirect, incidental, consequential, special, punitive or exemplary damages, including lost profits, lost data or business interruption, arising out of or related to your use of or inability to use the Platform, even if we have been advised of the possibility of such damages. Our total liability to you for all claims in any calendar year will not exceed the greater of (a) the amounts you paid CueCrux in that year (if any) or (b) £100. Some jurisdictions do not allow certain exclusions; in such cases our liability will be limited to the extent permitted by law.

13. Indemnification

You agree to indemnify, defend and hold harmless CueCrux, its affiliates, officers, directors, employees, contractors, licensors and agents from and against any claims, liabilities, damages, judgments, awards, losses, costs, expenses or fees (including reasonable attorneys’ fees) arising out of or relating to: (i) your use of or access to the Platform; (ii) your violation of these Terms or any applicable law or regulation; (iii) your Inputs, Outputs or User‑Generated Content, including any claim that such content infringes or misappropriates a third‑party’s intellectual property or other rights; (iv) your use of any third‑party service; or (v) your breach of export control or sanctions laws.

14. Suspension and Termination

CueCrux may suspend or terminate your access to the Platform at any time with or without notice if: (a) you breach these Terms; (b) your use poses security, legal or reputational risks to CueCrux or other users; (c) we are required to do so by law or by our service providers; or (d) we discontinue the Platform. On termination all rights and licences granted to you under these Terms will cease and you must stop using the Platform. You may terminate your account at any time by following the instructions in your account settings. Sections of these Terms that by their nature should survive termination will continue to apply.

15. Governing Law and Dispute Resolution

These Terms and any disputes relating to them or the Platform are governed by the laws of England and Wales, without regard to conflict‑of‑laws principles. You and CueCrux agree to submit to the exclusive jurisdiction of the courts of England and Wales for resolution of any dispute arising from these Terms, except that CueCrux may seek injunctive or equitable relief in any jurisdiction to protect its intellectual property or confidential information. If you reside in a jurisdiction with mandatory consumer laws requiring a different governing law or forum, those laws shall apply to the extent required.

16. Changes to the Platform or These Terms

We may amend these Terms at any time. When we make material changes we will provide reasonable notice (for example by email, in‑app notification or via the Platform). Changes will be effective on the date indicated in the updated Terms. By continuing to use the Platform after changes become effective you accept the updated Terms. If you do not agree, you must stop using the Platform. We may also modify, suspend or discontinue the Platform at our discretion. If a change in law or regulation materially impacts our ability to provide the Platform, we may terminate or adjust the affected services.

17. Miscellaneous

Entire Agreement. These Terms constitute the entire agreement between you and CueCrux with respect to the Platform and supersede all prior agreements or understandings. If you have signed a separate written contract with CueCrux covering your use of the Platform, that contract will control to the extent of any conflict.

Severability. If any provision of these Terms is held to be invalid, illegal or unenforceable, the remaining provisions will remain in full force and effect.

Waiver. A failure by CueCrux to enforce any provision of these Terms will not constitute a waiver of our right to enforce such provision or any other provision at a later time.

Assignment. You may not assign or transfer these Terms or any rights or obligations hereunder without our prior written consent. CueCrux may assign these Terms without restriction in connection with a merger, acquisition, corporate reorganisation or sale of substantially all of its assets.

Force Majeure. CueCrux is not liable for any delay or failure to perform resulting from causes outside our reasonable control, including acts of God, natural disasters, war, terrorism, labour disputes, governmental actions, power or Internet outages or other events beyond our control.

Contact Information. If you have any questions, complaints or requests regarding these Terms or the Platform, please contact us at legal@cuecrux.com. Our registered office address is available on Companies House.

By using VaultCrux, you acknowledge that you have read these Terms, understand them, and agree to be bound by them.