Beta
The writing was never the problem. The details are, and they sound just as good when they are wrong. Old prices, the wrong client’s numbers, a rule it followed yesterday. Datum checks every one against your own facts, rules and records, and stops the draft if something does not match.
Free while it is in beta.
What you confirmed, in your own words. Nothing gets in by being said in a chat.
Measured, not requested. It counts the characters and refuses.
Datum calls Gmail or your CRM itself, rather than trusting the account it was given.
A recurring job written down once, and done the same way every time after.
The exact records behind a receipt, kept and addressed by hash.
Integrate it via MCP with
Claude, ChatGPT and Grok let you add a custom connector on their free plans. Gemini and Perplexity need a paid plan of their own.
The difference
A memory tool remembers. This one refuses. Every other tool makes your AI better informed and then trusts whatever it writes. Datum measures the finished draft against your own facts and rules, and stops it going out when a detail does not hold.
It runs inside the AI you already pay for, it reads your systems itself rather than trusting the account it was handed, and anyone can check the receipt afterwards with no account and without taking your word for it.
A confirmed fact is one value. Sometimes the truth is a fifty page document, and confirming it a line at a time is not a real option. So point Datum at the document, and a claim drawn from it has to say which sentence it came from.
The draft said: our PTO policy allows 15 days.
The sentence it cited said: employees accrue 15 days of sick leave.
The number is really in the handbook. The sentence it came from is about something else, so it does not go out.
The draft said: our PTO policy allows 20 days.
The sentence it cited is in the handbook, and carries both the number and the policy it belongs to.
Ready to send, with the quote on the receipt for anyone who wants to look.
This catches an invented figure, a number lifted from the wrong paragraph, and a sentence that is not in the document at all. It cannot tell you the document is right, and it will not argue with a handbook that genuinely says two things at once. The sentence it relied on is on the receipt either way, so you can see what it read.
Questions
No. It runs inside whichever one you already pay for. Datum performs no thinking of its own and has no model. Your assistant writes, and Datum decides whether what it wrote matches what you confirmed.
A memory tool feeds context in and hopes. Nothing in one refuses anything. Datum measures the draft against what you confirmed and blocks it when they disagree, which is a different job and the reason a receipt is worth anything.
No, and it never claims to. It knows what you confirmed. If you confirm the wrong price, it will hold your writing to the wrong price faithfully. What it prevents is your AI stating something you never confirmed at all.
Nobody at Riley AI Systems reads your content, on any plan, including the free one. Your facts are stored under your account and you can export or delete all of it at any time without asking.
A signed record of what was checked, against what, and how it came out. Whoever you hand it to can verify it in their own browser with no account and no reason to trust you or us. That is the part nothing else does.
It refuses things it should not sometimes, and it cannot catch a claim your assistant never declared. Those limits are written here rather than buried, including the ones that are awkward.
Free on one context, forever, with checks and receipts uncapped. Paying starts when you want Datum reading your own accounts rather than what you paste in. The prices are here and nothing is charged during beta.
It checks the facts your AI states, not every fact it writes, and it names the specifics it was never given. It cannot tell you a client's records are wrong. It can tell you the post does not match them.
In beta, and I am the person who built it. If it breaks, email me.
Conner Riley, Riley AI SystemsI built Datum for my own writing, and I use it every day before anything goes out.
It is free while it is in beta, and onboarding is by hand, so it moves as fast as I can personally do it. If that sounds slow, it is, and it is the reason people who get in are set up properly rather than left to work it out.
When pricing starts, anyone already in keeps the founding price for a year, with thirty days notice before anything changes. Nothing is charged today and there is no card to enter.
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