One address for everything. Below is what to put in the subject line so it gets handled faster.
Send the address of the page. Most of the time the answer is in the data itself: a server marked as not responding has a list of failed handshakes behind it, with timestamps, and we will send it to you.
If the check is genuinely at fault — wrong endpoint, a transport we handle badly — that is a bug on our side and it gets fixed the same day.
The catalogue is built from the official MCP registry, which is public. Unpublishing from the registry removes the server from here on the next pass, within a day.
If you need it gone sooner, write and it will be hidden manually.
Possible for catalogue sections, not for the security section and not for positions in any ranking. Anything paid will be marked as paid.
Full exports are already open under CC BY 4.0 at /data/ — servers, skills, tools and daily uptime, no key required. If you need a cut that is not there, ask.