terms

Terms of use

mcpcost is free and needs no account. These terms say what you can expect from it and what it expects from you.

Last change: 13 November 2026. These terms apply to the website mcpcost.ulehla.dev, its JSON API and its MCP server at https://mcpcost.ulehla.dev/mcp. When you use them, you agree to these terms.

Who provides the service

mcpcost is an open-source project of Ondřej Úlehla, Czech Republic (ulehla.dev). It is not a company, and it has no relation to the publishers of the MCP servers it measures or to the makers of the MCP clients it works with.

What you get

The board shows the result of a daily probe of public MCP servers: whether a server answers, how a client gets access, and how many context tokens its tool definitions cost. The website, the API and the MCP server give you the same data. All of it is free.

A result is a measurement at one time from one network. A server that the board shows as down can work for you, and the other way round. Token counts are for the model that the page names and can change when the model or the server changes. Check a result yourself before you make a decision that matters.

No warranty

The service comes as it is, with no warranty of any kind: not for accuracy, not for availability, not for fitness for a purpose. It can change or stop at any time. As far as the law allows, the provider is not liable for loss or damage that comes from the use of the service or its data. Rights that the law gives you as a consumer stay as they are.

Fair use

Keep to the limits. The list API takes at most 6 requests in 10 seconds from one address. For all the data, take the dataset or the repository, not a crawl of the pages.
Use the live check (check_server, /check) only for public MCP endpoints. Do not use it to scan networks, to load a server or to reach an address that is not public.
Do not put secrets into a URL that you give to the service. A URL that you add to the board is public.
Do not try to break or overload the service.

We can limit or block a client that does not keep to these rules.

Licences

The code is open source under the MIT licence. The monthly datasets and the re-check evidence are under CC BY 4.0: use them for any purpose and name mcpcost as the source. Names, descriptions and tool definitions of MCP servers belong to their publishers; the board shows what the servers and the official MCP registry publish.

You publish an MCP server and do not want it probed or shown? Open an issue at github.com/ondraulehla/mcpcost and we take it out.

Privacy, changes, law

The privacy policy says what data the service gets from you. When these terms change, the date at the top changes, and the history is in the repository. The law of the Czech Republic applies to these terms.