Terms of Service
Last updated 23 September 2026
Who you are contracting with
Seylo is provided by Jakub Radziejewski, Rytro 163, 33-343 Rytro, Poland, contact support@seylo.co. These terms form the agreement between that person (“we”) and you when you create an account.
They are the regulations for the electronic service within the meaning of the Polish Act of 18 July 2002 on providing services by electronic means.
What Seylo does
Seylo is a workspace for organising work made with AI tools. You create projects, save text and files into them as typed assets, record how one asset was derived from another, and search across everything. You can connect Claude or another MCP-capable tool so it can read and write your projects on your behalf.
To use it you need an account and a working email address. You must be at least 16, or have your guardian’s consent.
Your content stays yours
You keep every right in what you put into Seylo. You grant us only the narrow, non-exclusive licence needed to run the service: to store, back up, transmit and display your content to you and to anyone you share it with. That licence ends when you delete the content or your account.
We do not read your content, do not sell it, and do not use it to train any model.
You are responsible for what you upload. You must not use Seylo to store unlawful material, or content you have no right to store.
Connected tools
You can connect Claude, ChatGPT or another MCP-capable tool with an access token, and install the browser extension. Those are separate services run by other companies. When you connect one, your content travels to it at your instruction and is then subject to that provider’s terms. We are not responsible for what they do with it, and we cannot retrieve or delete it there.
A token acts as you. Keep it private, and revoke it in Settings if it is exposed or no longer needed.
Fair use
Use Seylo for your own work. You must not resell access, attempt to reach another account’s data, probe or interfere with the service’s security, or automate use in a way that degrades it for other people.
The Seylo software, name and design remain ours. Nothing here grants you a licence to them beyond using the service as intended.
Availability
Seylo is provided as it is, without a guaranteed level of availability. We may change or discontinue features. If we discontinue the service entirely, we will give you at least 30 days’ notice and time to export your work.
Nothing here excludes liability for damage caused intentionally, and nothing limits your statutory rights as a consumer.
Paid plans
Seylo Pro and the founding plan are paid subscriptions, billed by card through Stripe, monthly or yearly, at the price shown before you pay and with tax added where it applies. A subscription renews at the end of each period until you cancel it. You can cancel at any time from Settings → Plan: access continues to the end of the period already paid for, and nothing further is charged.
Fourteen days to change your mind. On every paid plan, you may ask for a full refund of your first payment within 14 days of being charged, without giving a reason. Write to billing@seylo.co from the address on your account. We refund to the card within five working days, the account returns to the free plan, and a founding place goes back into the pool. This stands whether or not you used Seylo in those 14 days. If a subscription began with a free week, the 14 days count from the first charge, not from the start of the week.
After those 14 days a payment is not refunded; cancelling stops the next one and keeps your access until the paid period ends. If a renewal is charged that you did not want, write to us within 14 days of it and we will treat it as a first payment.
If you are a consumer in the European Union you have the right to withdraw from this contract within 14 days without giving a reason, under Directive 2011/83/EU. The refund above is how we honour it, and we do not ask you to waive it. Nothing in these terms limits the rights you have under the law of the country you live in.
If a price changes, the new price applies from your next renewal, and we tell you by email at least 30 days before it does.
Anything about a charge, an invoice or a refund goes to billing@seylo.co. We reply to those within two working days.
Ending the agreement
You can stop at any time by deleting your account, with no notice and no reason needed.
We may suspend or close an account that breaks these terms or the law. Except where the breach is serious or we are legally required to act immediately, we will warn you first and give you a chance to put it right and to export your work.
Complaints and disputes
Write to support@seylo.co with what went wrong and what you would like us to do. We will reply within 14 days.
As a consumer in the EU you may also use the European Commission’s online dispute resolution platform. Nothing in these terms deprives you of the protection of the mandatory law of the country where you live.
Your data
How we handle personal data is described in the Privacy Policy, which forms part of this agreement.
Changes
If these terms change materially we will tell you by email at least 14 days before the change takes effect. If you do not accept the change, you may delete your account before it does.