Using reef is an agreement between you and Haai BV. This page says plainly what you can expect from reef, and what is expected of you. How your data is handled lives on the privacy page.
Last updated 17 August 2026.
reef is a shared, living memory for you and the people you invite: pages you keep together, readable and writable by you and by an AI assistant you choose to connect. It is invite-only and young — it is offered as it is today, and it will keep changing as it grows.
You get in when someone already on reef invites your email address, and you sign in with that address. Your account is for you: keep access to your sign-in method to yourself, and tell us if you think someone else has used it. You must be at least 16 to use reef.
Everything you write or add remains yours. You give Haai BV only the permission it needs to run the service: to store your pages, back them up, and show them to the people you share a cove with. Nothing more is done with them — no advertising, no training of models, as the privacy page spells out.
Sharing is real and lasting: everything in a shared cove can be read by every member, including everything written before they joined. Removing someone stops their future access, but it cannot unsee what they read. Only share what you have the right to share.
If an account does these things, Haai BV can suspend or close it. When that is reasonable, you will be warned first and given the chance to export your content.
When you connect an assistant such as Claude, the pages it reads are sent to whoever runs that assistant, under their terms — not reef's. You choose the assistant; reef sends nothing anywhere on its own. You remain responsible for what you let an assistant write into a shared cove.
You can leave at any time, and take everything with you: one export turns every page into plain files on your machine. If you want your account deleted, ask — the privacy page says how, and what happens to content you contributed to shared coves.
reef is run with care: your memory is backed up, and separation between spaces is enforced by the database itself. But it is an early service provided as it is, without a guarantee that it is always available or free of faults. To the extent Belgian law allows, Haai BV's liability for using reef is limited to what you paid for it — which is, today, nothing. None of this limits liability for intent, gross negligence, or anything that cannot lawfully be excluded, and none of it touches your statutory rights as a consumer.
| Company | Haai BV |
|---|---|
| Address | Karel de Stoutestraat 184, 9000 Gent, Belgium |
| VAT / KBO | BE 1027.736.279 |
| Contact | [email protected] |
These terms are governed by Belgian law. Disputes go to the courts of Ghent, unless the law gives you, as a consumer, the right to your own courts.
If these terms change in a way that matters, the date above changes and you will be told before it takes effect. If you keep using reef after that, the new terms apply; if you do not agree, you can leave with everything, as described above.