Terms of Service

The services are provided by Hydromancer B.V., a private limited company registered in the Netherlands, with its registered office at Posthoornstraat 17, 3011 WD Rotterdam, the Netherlands (“Hydromancer”, “we”, “us”). You can reach us at data@hydromancer.xyz.

“You” means the person or organisation using the services. If you accept these terms on behalf of an organisation, you confirm you are authorised to bind it.

Hydromancer provides data infrastructure for the Hyperliquid ecosystem, including REST APIs, WebSocket data streams, historical datasets, node peering, and related tools (together, the “services”). Some services, such as the Reservoir archive, are offered free of charge and may be subject to additional terms published with them.

We continuously improve the services and may add, change, or retire features. If we make a change that materially reduces a paid service you rely on, we will give you reasonable advance notice where practical.

• You must provide accurate account information and keep it up to date.
• You are responsible for keeping your API keys and login credentials confidential, and for all activity that happens under your account.
• Tell us promptly at the address above if you suspect unauthorised use of your account or keys.
• You must be at least 18 years old, or the age of majority where you live, to create an account.

• Paid plans are billed monthly in advance. Each plan includes a monthly usage allowance, measured in tokens, as described on our pricing page.
• Usage above your plan's allowance is billed as overage at the rates shown for your plan.
• Prices exclude VAT and other taxes unless stated otherwise. Applicable taxes are added at checkout or on your invoice.
• Payments are handled by our third-party payment processor. We do not store your full card details.
• We may change our prices. We will notify you at least 30 days before a price change takes effect for your subscription, and you may cancel before it applies.
• If a payment fails, we may suspend paid features until the outstanding amount is paid.

Enterprise plans and other custom arrangements are governed by the order form or agreement we sign with you, which takes precedence over these terms where they differ.

You can cancel your subscription at any time. Cancellation takes effect at the end of your current billing period, and you keep access to paid features until then. Refunds are covered by our Refund Policy.

You agree not to:

• use the services for any unlawful purpose, or in breach of applicable sanctions or export laws;
• share your API keys with third parties, or circumvent rate limits, usage allowances, or access controls;
• attempt to disrupt, overload, probe, or gain unauthorised access to the services or our infrastructure;
• reverse engineer the services, except where the law expressly permits it;
• resell, sublicense, or redistribute the services or our data as a standalone data product without our prior written consent.

We may suspend access that we reasonably believe breaches these rules or puts the services or other customers at risk. Where reasonable, we will contact you first.

The services, including our software, APIs, schemas, documentation, and branding, are owned by Hydromancer or our licensors. We grant you a limited, non-exclusive, non-transferable right to use the services in line with these terms and your plan.

Underlying Hyperliquid blockchain data is public. You may use the data you receive through the services within your own products and operations, subject to section 6.

We work hard to keep the services fast and available, but unless a service level is committed to in your plan or a separate written agreement, the services are provided on a reasonable-efforts basis and may occasionally be interrupted for maintenance, upgrades, or events outside our control.

Hydromancer provides data and infrastructure only. Nothing in the services constitutes investment, financial, legal, or tax advice. Trading digital assets involves significant risk, and you are solely responsible for your trading and business decisions.

Blockchain data can be delayed, incomplete, or affected by events on the underlying network. To the extent permitted by law, the services are provided “as is” and “as available”, and we do not warrant that they will be error-free or uninterrupted.

To the extent permitted by law, Hydromancer is not liable for indirect or consequential losses, or for loss of profits, revenue, data, or trading opportunities. Our total liability arising out of or in connection with the services is limited to the fees you paid us in the 12 months before the event giving rise to the claim.

Nothing in these terms limits liability that cannot be limited by law, including liability for intent or gross negligence, or your statutory rights as a consumer.

You may stop using the services and close your account at any time. We may suspend or terminate your access if you materially breach these terms, if required by law, or if we discontinue the services, in which case we will refund any prepaid fees for the unused period.

We may update these terms from time to time. We will post the updated version on this page and, for material changes, notify account holders in advance. Continuing to use the services after the changes take effect means you accept them.

These terms are governed by the laws of the Netherlands. Disputes will be submitted to the competent courts in the Netherlands. If you are a consumer in the European Union, you also keep the protection of the mandatory laws of your country of residence and may bring proceedings there.

Questions about these terms? Email us at data@hydromancer.xyz.