A professional tool. Your professional judgment.

Vattel is provided by Sequester AG, Baarerstrasse 10, 6300 Zug, Switzerland (CHE-358.088.054), referred to as “Sequester”, “we” or “us”. These Terms govern the website, workspace, AI assistance and agreed custom workflows. Vattel is offered to businesses and professionals acting in their business capacity, not for consumer use.

The organisation identified at signup is the customer. The person signing up represents that they can bind it and becomes its team manager. Acceptance during signup, or an agreed order, forms the agreement. A signed order or data-processing agreement prevails only for the subject it expressly overrides. Customer purchasing terms do not apply unless Sequester expressly accepts them in writing.

A subscription covers up to ten named team members, including one manager. The manager controls invitations and membership and is responsible for authorised users, account security and permissions. Accounts must not be shared or used to circumvent seat limits. A team address is an access route, not proof of identity or permission. Sequester may reserve, refuse or reassign misleading or infringing addresses.

The customer is responsible for its users’ acts, lawful instructions and use of the service. Keep contact and billing information accurate and notify us promptly of unauthorised access. Sequester may require verification and suspend access where reasonably necessary to protect the service or comply with law.

A new eligible team receives one free trial of seven full consecutive 24-hour periods, starting only after successful card checkout and activation. A valid credit card is required. The confirmed trial start and end are shown in the workspace. Trials cannot be stacked or repeated through replacement accounts or teams.

Unless the manager cancels before the trial ends, the chosen paid subscription starts automatically at the end of the trial and the customer authorises recurring card charges. Cancel through the workspace subscription controls before the displayed deadline to avoid the first subscription charge. Trial cancellation ends access immediately. A card authorisation or bank verification may appear without being a subscription fee.

Standard: CHF 990 per month, billed monthly in advance, with a minimum commitment of twelve paid months beginning immediately after the trial. The initial subscription commitment totals CHF 11,880 before VAT. Cancellation after the trial takes effect no earlier than the end of those twelve months; remaining monthly fees remain payable. After the initial commitment, the subscription continues monthly and may be cancelled for the end of the current billing period.

Flexible: CHF 2,990 per month, billed monthly in advance, with no minimum commitment beyond the current billing period. Cancellation takes effect at that period’s end. Both plans include up to ten members. The CHF 4,990 onboarding fee is waived; no onboarding charge is payable. Deleting an account, removing users or ceasing use does not itself cancel a subscription.

Prices are in Swiss francs and exclude applicable VAT and other taxes. The customer authorises Sequester and its payment processor to collect the selected recurring fees and any separately agreed charges. The checkout confirms payable taxes. The customer must maintain a valid payment method; failed collection does not extinguish a payment obligation. Sequester may suspend unpaid service. Fees are non-refundable for unused time, reduced usage or early cancellation, except where mandatory law or an express written agreement requires otherwise.

Price changes apply only after the initial fixed commitment and with at least thirty days’ notice before the affected renewal. The customer may cancel before that renewal. Existing customers with separate written agreements remain on those agreements unless they expressly accept a replacement.

Each new paid team subscription includes one custom agent development by Arthur Gervais. Additional custom agents or agentic workflows cost CHF 1,490 each, excluding applicable VAT. Scope, supported inputs, integrations, delivery timing and acceptance criteria must be agreed in writing before development. The included development is not a promise of unlimited engineering, integration or maintenance and is scheduled after the paid subscription begins.

External licences, third-party service fees, ongoing operation outside the subscription, scope changes and additional development are excluded unless expressly agreed. The customer must provide timely access, instructions, representative materials and acceptance feedback. Delays in doing so extend delivery timing. Ownership and the continuing licence for delivered custom workflows are set out in section 08.

Written workflow specification: on written request, including in connection with cancellation or termination, Sequester will provide a functional specification of each delivered custom workflow in a common document format, at no additional charge. It will describe the agreed purpose, inputs, outputs, principal processing and decision steps, integrations, dependencies and human review points. The customer may use this specification to implement the workflow independently under the licence in section 08. The specification does not include Sequester’s underlying source code, platform internals, model weights or credentials. Delivery of executable software, migration, independent hosting, third-party licences and implementation assistance require a separate agreement; the specification is not a promise that the workflow will run unchanged on another platform.

Productivity examples, time-saving percentages, calculators and break-even scenarios are illustrative assumptions, not warranties or promised outcomes. Actual results depend on the process, inputs, integrations and necessary human review.

Vattel is a software assistance tool. Sequester does not provide legal, tax, accounting, audit, investment or other regulated professional advice, representation or certification. No professional adviser-client, fiduciary or similar relationship is created with Sequester.

All outputs are unverified drafts, including answers, citations, calculations, document edits, invoices, time entries, classifications and workflow results. They may contain fabricated, inaccurate, incomplete, biased or outdated information. Research mode, a source link, a confident explanation, a completed status or a saved document does not certify correctness, completeness, currency or suitability.

The customer must ensure a competent human independently checks every output, underlying source, factual assumption, calculation and final file before relying on, submitting, sending, publishing or otherwise using it. The customer remains solely responsible for professional judgment, deadlines, filing requirements, client advice and decisions made using the service. It must maintain its own backups and appropriate review and approval controls.

The customer retains its rights in submitted content and grants Sequester the limited rights needed to process it, provide and secure the service, fulfil support requests and comply with law. The customer warrants that its content and instructions are lawful and that it has the rights, notices, consents and professional authority required for processing.

For client content processed on the customer’s instructions, the customer determines the purposes and remains responsible for its controller and professional-secrecy obligations; Sequester acts as processor to the extent applicable. Separate data-processing terms may govern that relationship. The Privacy Policy explains processing of account, operational and other personal data. No provision removes either party’s mandatory data-protection obligations.

The customer must assess whether the deployment and disclosed service providers are suitable for its confidentiality and regulatory requirements before uploading restricted information. Sequester does not use private client content to train public foundation models.

Platform rights: Sequester and its licensors retain the service, software, integration, design, non-public prompts, indexes and documentation. Access grants a limited, non-exclusive, non-transferable right to use the service for the customer’s internal business during the subscription. This time limit does not apply to the separate workflow licence below. The customer may use and edit outputs subject to third-party rights; originality, exclusivity and intellectual-property protection of outputs are not promised.

Custom workflow ownership: as between the parties, Sequester owns all intellectual-property rights in the custom agents and agentic workflows it develops, including their software, prompts, configurations, methods, templates, components and specifications, even when commissioned or tailored for the customer. Commissioning, payment or delivery does not transfer ownership or grant exclusivity. The customer’s rights in its pre-existing materials and submitted content are unaffected, and third-party materials remain subject to their own rights and licence terms. This ownership clause does not authorise disclosure or unrelated use of the customer’s confidential information or client content.

Continuing workflow licence: upon delivery and payment of the agreed fees due for a custom workflow, Sequester grants the customer a perpetual, worldwide, non-exclusive, non-transferable licence, without a continuing licence royalty, to use that workflow and its delivered specification for its own business, including providing professional services to its clients. For the included workflow, the payment condition concerns subscription fees due at delivery; no separate development fee applies. The licence permits copying and adapting the delivered materials and implementing the workflow outside Vattel, including through contractors acting solely for the customer under confidentiality obligations and the same use restrictions. It does not permit resale, publication, distribution or sublicensing of the workflow or specification as a standalone product or service.

The workflow licence survives expiry, cancellation or termination of the Vattel subscription and does not require its renewal. It remains subject to the scope and restrictions above and applicable third-party rights. It does not include continued access to Vattel, inference, hosting, maintenance, updates, support, source code or platform internals. Those services and any necessary third-party licences must be arranged separately.

Existing customers: from 16 October 2026, Sequester also grants existing Vattel customers the continuing workflow licence above and the written specification entitlement in section 05 for their delivered custom workflows, to the extent Sequester holds the relevant rights. This additional grant is subject to the payment conditions and use restrictions above, requires no subscription renewal and does not reduce rights the customer already holds under a separate agreement.

Do not use Vattel unlawfully, upload content without authority, introduce malicious code, bypass safeguards or limits, gain unauthorised access, interfere with operation, extract non-public service assets, resell access without permission, or present AI output as independently verified when it is not. Sequester may apply reasonable security, capacity and fair-use limits. Feedback may be used to improve the service without compensation, excluding the customer’s confidential content.

The service is provided as available, without a service-level or uninterrupted-availability commitment unless separately agreed. Sequester may update features, models, tools and source coverage, perform maintenance and impose proportionate operational limits. Sources can lag publication, and external websites, integrations and payment services may change or become unavailable.

To the maximum extent legally permitted, Sequester excludes express or implied warranties concerning outputs and service accuracy, completeness, currency, fitness for purpose, merchantability, non-infringement, error-free operation or expected savings. Public descriptions do not create a guaranteed result. Mandatory rights remain unaffected.

To the maximum extent permitted by applicable law, Sequester excludes liability for the content, correctness or use of outputs and for losses arising from the customer’s professional services, decisions, failure to verify, missed deadlines, unauthorised instructions or use of third-party services. It also excludes indirect, consequential, special and incidental loss, lost profit, revenue, business, opportunity, anticipated savings or goodwill, and data loss to the extent recoverable by appropriate customer backups.

For any liability that remains lawfully limitable, Sequester’s total aggregate liability under or connected with the service, whether in contract, tort or otherwise, is capped at the subscription fees actually paid by the customer in the three months immediately preceding the first event giving rise to the claim. During a free trial the cap is CHF 100. Related events constitute one event; multiple claims do not increase the cap.

These exclusions and limits do not apply to Sequester’s intentional misconduct or gross negligence, or to any liability that mandatory law prohibits excluding or limiting. The customer’s obligation to verify outputs does not override those mandatory exceptions.

To the extent permitted by law, the customer will indemnify Sequester against third-party claims and reasonable defence costs arising from unlawful customer content or instructions, infringement of third-party rights by that content, the customer’s professional services or use contrary to these Terms. This does not apply to the extent a claim is caused by Sequester’s own breach or conduct for which liability cannot lawfully be excluded. Sequester will notify the customer of a claim and reasonably cooperate in its defence; no settlement may admit liability or impose non-monetary obligations on Sequester without its written consent.

Sequester may suspend access for non-payment, suspected misuse, security threats, unlawful instructions or mandatory legal requirements. It may terminate for material breach not remedied within ten days after notice, or immediately for a serious or irremediable breach. Suspension or termination caused by the customer does not waive accrued fees or the remaining agreed minimum commitment, subject to mandatory law.

The customer should export required documents and records before access ends. On termination, content is handled under the applicable retention settings, Privacy Policy and any data-processing agreement. Sequester need not retain data indefinitely or provide bespoke migration services without a separate agreement. This does not limit the written workflow specification provided under section 05 or the continuing workflow licence under section 08. Clauses intended to survive include those workflow rights, payment, intellectual property, liability, indemnity and dispute resolution.

Swiss substantive law governs this agreement, excluding conflict-of-law rules and the UN Convention on Contracts for the International Sale of Goods.

Disputes connected with these Terms or the service, including their formation, validity, interpretation, performance or ending, will be finally decided by arbitration administered by the Swiss Arbitration Centre under its Swiss Rules of International Arbitration applicable when proceedings begin. There will be one arbitrator. The legal seat will be Zug, Switzerland, and the proceedings will be in English. The award is binding, subject to mandatory rights of challenge.

Either party may seek urgent interim or protective relief from a competent court without waiving arbitration. Matters that cannot lawfully be arbitrated and mandatory rights or forums are unaffected.

Neither party is responsible for delays caused by events beyond its reasonable control, except payment obligations already due. Sequester may use subcontractors and assign this agreement with a business transfer, subject to applicable data-protection requirements. The customer may not transfer its subscription without written consent. Invalid provisions are severed to the extent possible without invalidating the remainder.

Sequester may update these Terms with notice of material changes. Changes that materially increase a fixed commitment require the customer’s agreement; mandatory legal or security changes may take effect sooner where necessary. These Terms, accepted plan and any expressly agreed order form the agreement. Contact [email protected] for contractual or service questions.

Previous version: 2026-10-16. Publishing this revision does not rewrite an existing acceptance record or override a separately agreed order.