What it is
In plain words, before anything else.
Everything else on this list is about being read. This one is about being asked. An agent interface is a small service at your domain that answers direct questions from software: what do you sell, is this available, what does this cost, can you take this booking.
The convention assistants are converging on is called MCP, and it is published at a fixed address so software can find it without being told. Think of it as the difference between an assistant reading your window display and an assistant asking your receptionist.
What it costs you
The loss you never see happen.
An agent that wants to ask you something and cannot will ask a business that can. You never see the question.
This is the check where nearly everybody is level, which is exactly why it is worth doing early. It is the last of these settings where being first still means anything.
Check it yourself
Do not take our word for it. Look.
This takes about a minute, costs nothing, and needs no account with us or anybody else. A finding you have confirmed with your own eyes is the only kind worth acting on.
- 1
Visit yourdomain.com/.well-known/mcp.json.
- 2
A page of text describing tools means you have an interface published.
- 3
A not found page means you have none, which is where almost every small business stands today.
What we found
Out of 186 businesses we checked ourselves.
- 186 of 186
had no agent interface published. Of those, one hundred and seventy five had no developer or API surface of any kind either.
Counted from our own checks of 186 real businesses, measured on 2026-09-10, one count per business. No business is named and none of their reports is public. The full write ups are in what we found.
How we fix it
What we do, and what we leave alone.
We host the interface for you, built from the catalog and details you have already given us, at your own domain. There is nothing for you to run and nothing to keep online.
You decide what it will answer. Anything you do not list, it does not know.
Next
The checks closest to this one.
- P2
The assistant got as far as your checkout and stopped
Finding you was the easy part. Finishing the purchase is where almost every business loses the machine. - P4
When an agent asks how much, does your business have an answer?
A price list is a document. A quote is an answer to a question somebody just asked. - P1
When software is ready to buy, is there a door for the money?
An agent with funds and an instruction to buy needs somewhere to put the money. Most businesses have nowhere.
Is this one open on your site?
The free check runs all sixteen against your own address and tells you which came back clean, in the same plain words as this page.
Free. No signup. Takes about a minute.