What Datum promises, and what it does not.

Who you are dealing with

Datum is built and operated by Riley AI Systems, in Fargo, North Dakota. One person runs it. When something breaks, the person who answers is the person who wrote it.

Using Datum means agreeing to what is on this page and on the privacy policy.

What Datum is

Datum stores facts and rules you personally confirmed, hands them back to your AI, and checks a draft against them before it goes out. It runs inside the assistant you already use.

• It does not send anything. It has no connection to any inbox, mailbox or API. It checks a draft and hands it back. Delivery is always yours.
• It does not decide what is true. It compares a draft against records you confirmed. If you confirmed something wrong, a draft repeating it passes.
• It does not read your sources. A source records where your context lives. Reading it stays with you and your assistant.

What a receipt is not

This is the part worth reading twice, because a receipt looks more official than it is.

• It is not proof that anything is true. It proves a check ran and what the result was. If the records behind it were wrong, the receipt faithfully records a check against wrong records.
• It is not proof of full coverage. A receipt names what was measured and what was not. Something can pass while a number in the same sentence was never checked at all, and the receipt says so.
• It is not a compliance certificate. It does not make you compliant with any regulator, carrier, employer or professional body, and it is not evidence that you met an obligation to one.
• It is not legal, financial, medical or professional advice, and it is not a substitute for review by someone qualified to give it.

If you are in a regulated field, treat a receipt as a working record of your own checking, not as something to hand a regulator. Ask the people who govern your work what they will accept before relying on it.

Your content stays yours

The facts, rules and sources you confirm belong to you. Riley AI Systems claims no ownership of them and does not sell them.

You give permission to store and process them for the purpose of running Datum for you, and nothing else. On the free plan, that permission also covers a person here reading them to improve the product, which the privacy policy sets out in full. On a paid plan it never does.

You can take everything out with export, or delete all of it with forget, at any time, without asking anyone.

What you agree not to do

• Do not put in data you are not allowed to share, including someone else's personal or confidential information you have no right to hold.
• Do not use Datum to make a false claim look verified. A receipt describes a check. Presenting one as though it proves more than it says is the one misuse this whole thing exists to prevent.
• Do not try to break, overload or work around the gate, for yourself or anyone else.
• Do not resell or repackage access without agreeing that with me first.

Plans and payment

Datum has a free plan and paid plans. The current prices are on the pricing page.

• Billing. Paid plans are billed monthly in advance, in US dollars, by card through Stripe. Riley AI Systems never sees or stores your card number. Prices do not include sales tax where it applies.
• Renewal. A subscription renews each month until you cancel it.
• Cancelling. Cancel any time from the billing page. You keep the plan until the end of the month you paid for, then the account moves back to the free plan. Nothing you stored is deleted, and export keeps working.
• Refunds. If Datum is not working for you in your first thirty days on a paid plan, email me and I will refund that first payment. After that, payments are not refunded for a partial month.
• Changing plans. Moving between plans takes effect straight away, and the difference is prorated on your next invoice.
• Failed payments. If a payment fails, Stripe retries it for a while. If it still cannot be collected, the account moves to the free plan, with nothing deleted.
• Price changes. You will get thirty days notice before your price changes. Anyone who joined before October 5, 2026 keeps the plan and price listed when they joined for a year.

Beta, and what that costs you

Datum runs on one machine. There is no uptime commitment, and when it is down it is down. Backups are daily and currently held on the same premises, so data loss is possible.

Features can change or be removed. The service can be discontinued. If that happens you will be told with enough notice to export, and export will keep working until the end.

It is provided as it is, without warranty of any kind. Liability for any loss arising from using it is limited to the amount you paid for Datum in the twelve months before the claim, which on the free plan is nothing. That is a real limit and it is stated here rather than buried.

Ending it

You can stop whenever you like. Run forget and the account and everything in it is gone.

Access can be suspended for the things listed under what you agree not to do, or if keeping an account running puts other people's data at risk. You will be told why, and you will get the chance to export first unless doing so would make things worse.

Changes to these terms

These terms are dated. If they change in a way that affects what happens to your data or what you are agreeing to, you will be told directly, not by a silent edit to this page.

Governed by the laws of the State of North Dakota, United States.

The other half of this is the privacy policy, which covers what is stored and what is not.

Datum is operated by Riley AI Systems, Fargo, North Dakota. Questions to conner@rileyaisystems.com. Last updated 14 October 2026.