`check_url`

9 servers reported a tool by this name when we called them. Names are chosen by whoever wrote the server, so two tools sharing a name do not have to do the same thing. We record what was reported, not what it does.

server	result when we called it	tools
pipeworx-gateway https://gateway.pipeworx.io/phishtank/mcp	answers-mcp	32
unphurl https://mcp.unphurl.com/mcp	answers-mcp	18
nothumansearch https://nothumansearch.ai/mcp	answers-mcp	14
watchpup https://watchpup.watchpup.workers.dev/mcp	answers-mcp	12
tweetfeed-mcp https://mcp.tweetfeed.live/	answers-mcp	10
Anyway Possible https://anywaypossible.com/api/registry-mcp	answers-mcp	8
Anyway Possible https://anywaypossible.com/api/mcp	answers-mcp	8
mcp-typescript server on vercel https://448c.org/mcp	answers-mcp	2
url-safety-validator-mcp https://url-safety-validator-mcp-production.up.railway.app	answers-mcp	1

9 of these answered an MCP handshake on the day we checked. That is not a promise the tool works, only that the server was running and told us the tool existed.