Terms of Service, Kubi

Effective 2026-11-15

These Terms of Service ("Terms") are a contract between you and Arthur Katcher, doing business as Kubi ("Kubi", "we", "us") for using Kubi. The short version is a plain summary; the numbered sections are the binding terms.

The short version

Kubi rents cloud computers with a Linux desktop, called Screens, that you and your AI agents use. Kubi is for work and business only.
Anyone can sign up, and we approve each account by hand before it can create Screens or be charged.
What's on your Screens is yours. We don't look inside without a reason, we never train AI on it, and we never sell it.
You answer for what you, your team and your agents do, including what your agents buy. Section 6 lists what isn't allowed.
You pay in advance through Stripe and can cancel at any time in the dashboard.
Screens aren't backed up for you. Keep copies of anything important.
When you leave, you can take your data with you, free.
Kubi comes as is, with no uptime promise, and our liability is capped.

1. Words we use

"You" means the business, organization or professional that accepts these Terms.
"Account" means your Kubi organization, with its members, API keys and settings.
"Agent" means any software, including an AI model or a script, that you or your members connect to the Service.
"End User" means a person who uses Screens through a product you build on the Service.
"Screen" means a virtual computer with a Linux desktop and its disk that we provide. A persistent Screen stays until you delete it; a disposable Screen runs on usage credit.
"Service" means the Screens, the dashboard at console.trykubi.com, the API, the SDK, the MCP server and the documentation.
"Your Content" means the files, data and software that you, your members, your Agents or your End Users put on or create with the Service, including everything on your Screens, each Screen's history and saved screenshots.
"Pricing Page" means trykubi.com/pricing. "Fees" means the prices on it. "DPA" means our Data Processing Agreement at trykubi.com/legal/dpa. "Privacy Policy" means trykubi.com/legal/privacy.

2. The agreement

2.1 Business use only. Kubi is for business and professional use. By accepting these Terms you confirm that you use Kubi for your trade, business or profession, including as a self-employed developer, and not as a consumer. If you accept for a company or other organization, you confirm that you may bind it.

2.2 You accept these Terms by ticking the box at sign-up or when you accept an invitation, and we record the version and the time. You must be at least 18.

2.3 The agreement is these Terms, the DPA and the Fees on the Pricing Page. If they conflict, the DPA prevails on personal data and these Terms on everything else. A separate agreement signed by both of us prevails over these Terms where it says so.

2.4 You may not use the Service if you are on a US, EU, UK, UN or Canadian sanctions list or are located in a country or region under comprehensive sanctions, or for anyone who is. You follow the export control and sanctions laws that apply to your use.

3. Your Account and approval

3.1 Sign-up and approval. Anyone can sign up. Each new Account starts as pending: until we approve it, it can't create Screens, use API keys or be charged. You may tell us what you are building in the optional note at sign-up, and we may write to you before deciding. We decide which Accounts to approve, in what order, and may decline one without giving a reason. We email you when your Account is approved.

3.2 Give us accurate sign-up and billing details, including your billing country and, if you have one, your VAT or other tax ID, and keep them current. Don't open extra Accounts to get around limits or a suspension, and don't create Accounts by automated means.

3.3 You sign in with a link sent to your email, with GitHub or Google, or with a passkey. You are responsible for everything done through your Account and API keys, including by your members and your Agents. Keep keys secret, and tell security@trykubi.com at once if one leaks.

3.4 We may ask you to verify your identity or payment method, and may refuse, limit or close Accounts that don't pass.

4. The Service

4.1 Screens run on servers we operate in the EU, at the location shown when you create one. We don't move Your Content to another country without telling you first, unless an emergency or the law requires it, and then we tell you as soon as we can.

4.2 Each Screen comes with the CPU, memory and disk on the Pricing Page. Stay within the limits in the documentation. If your use harms other customers, we may contact you, slow the Screen down, or move it to another server of the same size.

4.3 We keep improving the Service and may change it. If a change makes the Service materially worse for you, we tell you by email in advance where we can, and you may cancel within 30 days and get back prepaid Fees for the unused time. Features marked beta or preview may change or end at any time.

4.4 We don't promise any particular uptime. Support is by email at support@trykubi.com on business days, and a person writes every reply.

4.5 We protect the Service with reasonable technical and organizational security measures, described on our security page and in the DPA. If we learn of a security breach that affects Your Content, we tell you without undue delay. You are responsible for what you run on your Screens and for the logins and keys you give your Agents.

4.6 The IP addresses of Screens belong to us or our providers and may change. We don't promise that any website will accept traffic from them.

5. Your Agents and End Users

5.1 Everything an Agent does from a Screen counts as done by you, including what it does on websites, the purchases, payments and bookings it makes, the forms it submits and the messages it sends. We are not a party to any of your transactions.

5.2 The websites, apps, accounts and AI models your Agents use have their own terms. You need the right to use them. When you give an Agent a login, you confirm you are allowed to.

5.3 We don't control those services and are not responsible for them, for what your Agents do or buy there, for bans or lost accounts, or for harm from content your Agents read, including instructions hidden in web pages.

5.4 AI agents make mistakes. You decide what your Agents may do on their own and keep human review of actions with legal, financial or safety effects.

5.5 You may build products on Kubi and let End Users work with Screens. You answer for them, and your terms with them must be at least as strict as section 6. You may not resell plain Screens, our API or remote desktops as a hosting, virtual machine or remote desktop service; you may offer them inside a product that adds substantial software or services of your own.

5.6 We don't ban CAPTCHA solvers, proxies or browser fingerprint settings. You are responsible for how you use them, including whether the websites you reach allow automated access, and they never excuse anything section 6 forbids. We may act under section 7 on a credible complaint from a website operator.

6. Acceptable use

Use the Service only for lawful purposes. These rules cover everything that runs on or leaves a Screen, whoever started it. You may not use the Service to:

break the law, or store or share illegal content. Child sexual abuse material leads to immediate closure and a report to the authorities;
access systems, accounts or data you have no right to, or scan, attack or overload anyone, including by credential stuffing, denial of service, malware or phishing. Security testing is fine on systems you own or may test;
break out of a Screen, reach other customers' Screens or data, or interfere with the Service or its infrastructure;
send spam or deceive people, including scams, impersonation, fake reviews or engagement, ad fraud, or creating accounts in bulk or under false identities on other services;
harass, threaten or track people without their consent, or incite violence or hatred;
get around a ban or block a website has placed on you, buy up tickets or other limited goods against the seller's limits, or collect personal data against privacy law;
run open proxies, VPN services, Tor exit nodes or bandwidth-sharing apps for others, or get our IP addresses onto blocklists;
mine cryptocurrency, earn rewards for sharing a Screen's resources, or use Screens for public file hosting or traffic floods;
infringe anyone's copyright, trademark or other rights;
run anything where a failure could cause death, serious injury or environmental damage; or
help anyone else do any of these things.

Outgoing email ports are closed by default. Security research on the Service itself is allowed under our vulnerability disclosure policy at trykubi.com/legal/vulnerability-policy.

7. Reports, enforcement and appeals

7.1 Anyone can report abuse or illegal content to abuse@trykubi.com, with where it is (IP address, time, any URL), why it is illegal or breaks these Terms, and their name and email. We confirm receipt and tell the reporter what we decided.

7.2 We find problems through reports and automated signals about network and resource use. We don't routinely scan inside Screens. Automated systems may slow down or pause a Screen to stop harm; where practicable, a person reviews before we suspend or close an Account.

7.3 We take the smallest step that stops the harm: a warning, a limit, blocking ports or domains, pausing a Screen, suspending the Account, or closing it. When we do, we email you what we did, why, the rule we relied on, whether automation was involved, and how to appeal, except where the law forbids it or it would put someone at risk.

7.4 To appeal, reply to that email or write to support@trykubi.com. A person, where possible one not involved in the first decision, answers, normally within 7 days.

7.5 We report child sexual abuse material as US law requires, and tell the police about threats to someone's life or safety. Otherwise we disclose data to authorities only when the law requires it, after checking the request, and we tell you unless the law forbids it.

8. Your Content

8.1 You own Your Content. You let us host, copy, process and transmit it only as needed to provide the Service to you.

8.2 We never use Your Content, or anything derived from it, to train AI models, we don't let our subprocessors do so, and we never sell it.

8.3 We look inside your Screens only if you ask, to investigate abuse or a security problem, or when the law requires it. We log every look and tell you about it, unless the law forbids it or it would put someone at risk.

8.4 Each Screen keeps a history of the calls made on it, with their parameters, including text an Agent types, and the screenshots they returned, for 30 days. Typed text that matches a secret you saved is blanked. You can turn detailed history off, and we never record the live view.

8.5 We keep encrypted recovery copies of Screen disks for 7 nights to recover from our own failures. They are not a backup service for you.

8.6 Don't put regulated data on the Service, such as health records covered by HIPAA or full card numbers, unless we agree in writing.

8.7 When Your Content includes personal data, you are the controller, or a processor for your own customers, and we process it for you under the DPA, which is part of these Terms. You are responsible for the lawful basis, notices and consents, including for your End Users and the people whose data your Agents collect.

8.8 We use data about how the Service is used and performs ("Service Data") to run, bill, secure and improve it, and we keep the contents of your Screens out of it.

9. Confidentiality

Each of us keeps the other's non-public information confidential, uses it only for this agreement, and shares it only with people and subprocessors who need it and are bound to keep it confidential. Your Content is your confidential information. This doesn't cover information that is public, already known, independently developed, or that the law requires a party to disclose.

10. Fees and billing

10.1 Fees are on the Pricing Page, in US dollars, and exclude taxes. You pay through Stripe. We add VAT or other taxes where we must, and apply the reverse charge with a valid business tax ID where the law allows. We email a receipt for each charge.

10.2 Persistent Screens are billed per Screen, monthly or yearly in advance, whether running or stopped, and your plan renews until you cancel. A Screen added during a period is charged pro rata. Deleting one takes it off your bill at once, and the unused days are credited to your next invoice. You can restore a deleted Screen for 7 days, which puts it back on the bill; then its disk is erased. A founding price shown on the Pricing Page stays for as long as your subscription runs.

10.3 Disposable Screens run on usage credit you buy in advance, charged per billing step at the rate on the Pricing Page. When the credit can't cover the next step, running disposable Screens stop. Paid credit never expires, and unused paid credit is refunded on request when your Account closes.

10.4 Trial credit is granted once per Account and once per card, is spent first, has no cash value and is never refunded. We may cancel trial credit obtained through extra Accounts or someone else's card, and charge for what it was used for.

10.5 We email you 30 days before a price increase for your existing Screens takes effect. It applies from your next billing period, and you can cancel before then.

10.6 If a payment fails and Stripe's retries don't succeed, we email you and pause your Screens. You can still export Your Content while they are paused. If the amount is still unpaid 30 days after the pause, we close the Account and erase its data.

10.7 You can cancel at any time in the dashboard. Your Screens keep running until the end of the period you paid for, then stop. A yearly plan runs to the end of the paid year and does not renew; the unused months are not refunded. Except as these Terms say, we don't refund partial periods.

10.8 If a Screen is down for more than 4 hours in a row because of a fault in our own systems, we credit that Screen for the lost time if you ask within 30 days. If we charge or suspend you by mistake, we refund or credit you. These credits are your only remedy for downtime.

10.9 If you dispute a charge with your bank without contacting us first, we may suspend your Account until the dispute is resolved.

11. Suspension and termination

11.1 You can close your Account at any time.

11.2 We may suspend or close your Account if you breach these Terms materially, or repeatedly after a warning, if the law requires it, or to protect the Service or others from harm. In an emergency, such as a live attack, child sexual abuse material or an order from an authority, we act at once; otherwise we warn you first when we can. Section 7 explains the notice and the appeal.

11.3 We may also end these Terms with 30 days' notice, or at once if we must stop for legal reasons or lose a supplier the Service depends on. We then refund prepaid Fees for the unused time and unused paid credit.

11.4 If we close your Account for your breach, prepaid Fees are not refunded and you may not open another Account without our written consent.

12. Leaving Kubi

12.1 You can export Your Content at any time through the dashboard, API or SDK: each Screen's disk as one image, your settings and history as JSON, and your invoices from Stripe. Our export page, trykubi.com/legal/data-export, lists the methods and formats.

12.2 To move to another provider or to your own systems, or to have your data erased, email support@trykubi.com. No notice period applies. For up to 30 days, which you can extend once, the Service continues while we help you move; normal Fees continue for Screens that keep running. If 30 days isn't technically possible, we tell you within 14 working days and propose a period of up to 7 months. We also help you plan an exit at any time, with the information we hold that you need for it, such as your disk sizes and the export formats.

12.3 You can take all of the following, and this list is complete: the contents of your Screens' disks and the files you uploaded, your Screen settings, your Screens' history and saved screenshots for the time we keep them, your Account and member data, your API key names and details, and your usage and billing records. We don't hand over our security detection rules, signals about other customers, our source code or our infrastructure configuration, which are our trade secrets.

12.4 When your Account ends for any reason, you have 30 days to download your data (the "Retrieval Period"), unless you waive it. Then we erase it, except what the law requires us to keep; our recovery copies expire on their normal cycle.

12.5 Exports and switching are free, including their data transfer, and there are no early termination fees. Our export page shows where our infrastructure is, which laws apply to it, and how we protect data against unlawful government access.

13. Our rights and copyright

13.1 The Service, including our software, Screen images and brand, belongs to us and our licensors. While your Account is active, you may use the Service under these Terms. Our SDK and other open-source parts come with their own licenses, and the software inside Screens is under its own licenses; source code that a license such as the GPL requires is available on request to legal@trykubi.com.

13.2 Don't copy, reverse engineer or probe the Service, except as the law or our vulnerability disclosure policy allows. You may publish benchmarks if you state the method and the date.

13.3 You may use the Kubi name only for plain, truthful references such as "built on Kubi", and our logo only with our permission. If you send us feedback, we may use it freely.

13.4 To report material that infringes your copyright, write to legal@trykubi.com with the details 17 U.S.C. 512(c)(3) asks for. We act on valid notices, forward counter-notices, and close the Accounts of repeat infringers.

14. No warranties

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE". TO THE FULLEST EXTENT THE LAW ALLOWS, WE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. WE DON'T PROMISE THAT THE SERVICE WILL BE UNINTERRUPTED OR ERROR-FREE, THAT DATA WON'T BE LOST, THAT WEBSITES WON'T BLOCK YOUR AGENTS, OR THAT YOUR AGENTS WILL ACHIEVE ANY RESULT.

15. Liability and indemnity

15.1 TO THE FULLEST EXTENT THE LAW ALLOWS, NEITHER OF US IS LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES, OR FOR LOST PROFITS, REVENUE OR DATA.

15.2 OUR TOTAL LIABILITY FOR ALL CLAIMS ABOUT THESE TERMS, THE DPA OR THE SERVICE IS LIMITED TO THE GREATER OF US$100 OR THE FEES YOU PAID US IN THE 12 MONTHS BEFORE THE FIRST EVENT GIVING RISE TO A CLAIM.

15.3 These limits don't apply to fraud, willful misconduct, death or personal injury caused by negligence, your payment duties, your indemnity in section 15.4, or any liability the law doesn't allow to be limited.

15.4 If a third party, including an authority or one of your End Users, makes a claim against us arising from Your Content, your Agents, your End Users or your breach of these Terms or the law, you will defend us and pay the resulting damages, fines and reasonable legal costs, except to the extent we caused it. We tell you promptly and help at your cost.

16. Changes to these Terms

16.1 For changes that reduce your rights or increase your costs, we email Account owners and show a notice in the dashboard at least 30 days before they take effect. If you don't agree, cancel before then, and we refund prepaid Fees for the unused time. If you keep using the Service after the change, you accept it.

16.2 Changes required by law, or needed to stop abuse or fix a security problem, may take effect sooner. Every version stays online with its date.

17. Law and disputes

17.1 Before going to court, the party with a dispute writes to the other (to legal@trykubi.com, or to the email on your Account), and we both try in good faith to settle it within 30 days.

17.2 The laws of Ireland govern these Terms and any dispute about the Service, and the courts of Ireland, sitting in Dublin, have exclusive jurisdiction. The UN Convention on Contracts for the International Sale of Goods doesn't apply. Either of us may ask any competent court for urgent relief, such as an injunction.

18. General

18.1 We may transfer these Terms to a company that takes over Kubi's business, including a company Kubi's founder forms to run it, and we will tell you if we do. You may not transfer them without our written consent.

18.2 Neither of us is liable for delays caused by events beyond reasonable control, such as a data center or network failure, attacks or government action. These don't excuse paying for service you received.

18.3 These Terms, the DPA and the Pricing Page are the whole agreement about the Service. Marketing pages, the documentation and the Privacy Policy add no duties for us, except that our vulnerability disclosure policy's safe harbor binds us as it states. Terms in your purchase orders don't apply. If a provision is unenforceable, the rest stays in effect.

18.4 We communicate by email and in the dashboard. Legal notices to us go to legal@trykubi.com; notices to you go to the email on your Account. The English text controls.

18.5 Sections that by their nature should survive the end of these Terms survive, including payment, sections 8.2, 9, 12, 14, 15 and 17.