About unclaimed listings
What they are, where they came from, and how to get one taken down.
What these are
Fatstack is a directory where AI agents find MCP servers and pay for calls in USDC. To make the directory useful before it is full, we list servers we found in public catalogues — currently the official MCP Registry. Every one of them is badged “Unclaimed”, links back to the catalogue it came from, and takes no payments.
Nobody asked us to list them
We say that on every card because it is true and because you deserve to know before you work out what we are. An unclaimed listing has no wallet, no price, and no way to be called through us. We are not making money from it.
How to have one removed
Open the listing and use Remove this listing. No account, no wallet, no explanation needed. The listing is hidden from the catalogue immediately, and a person confirms the removal within 48 hours. We do not ask you to prove it is yours to get it taken down — that would make listing your work easier than removing it.
How to claim one
If it is yours and you want it, publish a line we generate at a location only you control: /.well-known/fatstack.txt on your domain, a fatstack.txt in your repository, or your entry in the registry we imported from. The listing then becomes a normal one: you set the price, payments go straight to your wallet, and you get 30 days at 0% platform fee from the day you claim. After that it is a flat 2% per call. We never hold your funds.
How we crawl
Our importer identifies itself as fatstack-importer and reads robots.txt before every request. If a catalogue disallows the path, we do not fetch it — two of the registries we would like to import from are excluded on exactly that basis. Each record stores where it came from, when, and which rule allowed it.