Who we are
Sheaf Labs makes risk controls for AI agents. Write to hello@sheaf.one about anything on this page.
What we keep
- Your email address, if you sign in to Sheaf Mind or ask us to keep a report. We use it to send you the sign-in link you asked for and nothing else.
- Your mobile number, if you enter it on a Sheaf School page to receive texts. It is stored encrypted and used only for those texts. Reply STOP to any text, or use the stop button on the page where you turned them on, and the texts end.
- What you type into a Sheaf product: questions to Sheaf Mind, a student's work with the Sheaf School tutor, an agent's proposed action sent to a Sheaf gate. This is what the product works on. Memory and daily reviews in Sheaf Mind and Sheaf School are stored encrypted.
- Payment records, if you buy something. Card details go to Stripe and never reach us. We keep what Stripe tells us: what was bought, when, and by which account.
- A record of decisions: when a Sheaf gate holds or clears an action, the reasoning and the decision are written to a signed, timestamped ledger. That is the product. Ledger entries are kept for as long as the customer's account needs them.
- Ordinary web logs: your IP address and the pages you open, kept for a short time to run the site and stop abuse.
- Google Analytics: which pages are read, how visitors arrive, and roughly where from. It sets a cookie only if you press Allow on the bar at the bottom of the page. If you press No thanks, Google counts the visit without a cookie. We use no advertising trackers.
Who else sees it
Your questions and work are sent to the AI models that answer them. Today those are run by OpenAI, Anthropic, Google, xAI, Meta and Perplexity, under their business terms, which do not allow them to train on your data. Sheaf School installations for a school can run on models the school hosts itself.
Page statistics go to Google Analytics. Email is sent through Amazon Web Services and Zoho. Texts are sent through Amazon Web Services. Payments go through Stripe. Our servers are on Amazon Web Services.
We do not sell your information and we do not share it for advertising.
Children
Sheaf School is used by students under the school's supervision. The school decides what a student's name is on the system, and the teacher and the student's parent can see what the tutor keeps about the student. A parent can ask us to remove it at hello@sheaf.one. Sheaf Mind and the other products are for adults.
How long
Sign-in links expire in minutes. Sheaf School classes and their records, and accounts and their memory, are kept until the teacher, the parent or the account holder asks us to remove them. Web logs are kept for a short time and then dropped.
Your choices
- Ask what we hold about you, have it corrected, or have it removed: write to hello@sheaf.one. We answer within thirty days.
- Stop texts: reply STOP to any text, or use the stop button on the page where you turned them on.
- Clear what the Sheaf School tutor knows about a student: the teacher can do this from the student's record.
- Change your answer on the analytics cookie: ask me again.
Last updated 25 September 2026.