Every MCP catalogue shows you a list. mcpbeat shows you what happens to a server over time.
I ping 12,000+ live servers every 15 minutes and keep the history. 2,320 of them are dead while the official registry still lists them as active. I pull real install counts from npm and PyPI instead of GitHub stars. And I read the source: file access, shell calls, install hooks. Every finding comes with the file, the line, and a link to the exact commit I read, so you can check it in a minute.