Every mediation runs on the same engine: the private session, or caucus, where each side tells the mediator what they'd truly accept. It's the most valuable conversation in the whole process — and the most fragile. It only works if both sides believe their real number can't reach the other room. With a human mediator, that belief rests on a professional promise. With an AI mediator, it can rest on something stronger: architecture.
That distinction sounds academic until you're the one deciding whether to tell a stranger your actual walk-away figure. Here's how sealing a bottom line in code works, why it changes how people negotiate, and where the honest limits of the approach sit.
The caucus problem
A good human mediator shuttles between two rooms carrying an extraordinary amount of sensitive information: what each side would really take, how desperate they are, where their case is weak. The profession's answer to the obvious risk is confidentiality — a duty mediators take seriously and almost always keep. But it is, structurally, a promise kept by a person under pressure, in real time, across hours of conversation.
The leak doesn't have to be a number. "I think there's more room here than you'd expect" is a leak. A telling pause after your offer is a leak. A proposal pitched suspiciously close to one side's limit is a leak, because its position reveals where that limit sits. Both parties know all this, so both hedge — they give the mediator a "real" number with padding built in. And padded numbers are just the public bluff moved into the private room, which is why mediations drag even with a skilled neutral in the middle.
Sealing a number in code
The Negotiately mediator is one impartial AI sitting between two parties, each with a private channel it alone can see. When you join, you tell it your real bottom line in confidence — sealed intake. From that moment, two guards run on everything that crosses to the shared channel, and they're enforced in code, not by policy.
The settlement guard checks every proposal the mediator makes against both sealed limits before it's shared. A proposal that would sit outside either side's limit — or betray, by its position, where a limit sits — doesn't go out. The leakage guard screens every shared-channel message so that numbers and private notes can't cross in any written form: digits, words, commas, "$850k", "0.85m", a fraction, a hint. The other side sees the mediator's proposals and your accept-or-decline decisions. Nothing else.
A human mediator promises not to reveal your number. This one is incapable of it. The confidentiality isn't a behavior; it's a property of the system.
Why sealed limits make deals close
The practical payoff isn't privacy for its own sake — it's honesty. The entire reason people bluff in negotiations is that whoever reveals their true position first hands the other side leverage. Remove the possibility of the number leaking, and the reason to bluff disappears with it. Both sides can state their actual limit on day one instead of after six rounds of theatre.
And true positions are what settle disputes. Most money disputes die in the gap between two bluffed positions — an asking price nobody meant and a lowball nobody meant — even when the real reserve and the real ceiling overlap comfortably. A mediator holding both sealed numbers can test that overlap privately in minutes. If it exists, proposals land inside it. If it doesn't, the mediator says so early, without revealing either figure, and both sides get their time back instead of spending weeks negotiating toward a deal that was never there.
When both sides accept the same proposal, the mediator writes a Deal Memo: a plain-English record of the amount, conditions, and timeline. It's deliberately not a binding contract — for larger matters you take it to a solicitor or attorney to formalise, which is fast precisely because every term is already agreed.
What this doesn't replace
Honest limits cut both ways, so here are ours. The Deal Memo is not binding, and none of this is legal advice — formalisation still runs through the professionals your jurisdiction expects. And skilled human mediators do things software doesn't: read a room, sit with grief and anger, manage multi-party disputes, rebuild trust between people who must keep dealing with each other. High-conflict family matters, workplace disputes, estate fights among siblings — matters where the relationship is the dispute — deserve that craft.
The AI mediator is built for the disputes that aren't that: two parties, one gap, money and conditions. A deposit, an invoice, a private sale, a stuck property deal. For those, sealed bottom lines at $5 a seat do the job that actually settles them.
Weighing the two options for a real dispute? The full comparison — cost, speed, confidentiality, and where each wins — is at AI mediator vs human mediator, or you can start a mediation and see the sealed process from the inside.