`list_domains`

23 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
tunnelmind-data-api https://mcp-data.tunnelmind.ai/mcp	answers-mcp	93
redu-cloud-mcp https://mcp.redu.cloud/mcp	answers-mcp	81
send16 https://mcp.send16.com/mcp	answers-mcp	79
misarmail https://api.misar.io/mail/mcp	answers-mcp	54
pipeworx-gateway https://gateway.pipeworx.io/bpstat-pt/mcp	answers-mcp	35
inboxguard https://mcp.inboxguard.io/mcp	answers-mcp	28
layero https://mcp.layero.ru/mcp	answers-mcp	27
dmoera-creator https://dmoera.xyz/mcp	answers-mcp	26
linkly https://mcp.linklyhq.com	answers-mcp	25
MiniURL MCP https://workers.miniurl.com/mcp	answers-mcp	23
DMARC Examiner https://mcp.dmarc-examiner.com/mcp	answers-mcp	21
Lawstronaut MCP https://mcp.lawstronaut.com	answers-mcp	16
sota https://mcp.sota.io/mcp	answers-mcp	14
vantaj https://api.vantaj.co/mcp	answers-mcp	13
namemyapp-mcp https://mcp.namemy.app/direct	answers-mcp	13
ckg-nvidia-ai https://ckg-nvidia-ai.onrender.com/mcp	answers-mcp	9
Arcology Knowledge Node https://arcology-mcp.fly.dev/mcp	answers-mcp	9
ckg-nvidia-nemoclaw https://ckg-nvidia-nemoclaw.onrender.com/mcp	answers-mcp	8
moltspace https://moltspace.lol/mcp	answers-mcp	6
loadbay https://loadbay.xyz/api/mcp	answers-mcp	6
quelvio-mcp https://mcp.quelvio.com/http	answers-mcp	3
senlay-physical-context https://senlay.cloud/mcp	answers-mcp	3
cassandra-predict https://predict.dropwatchhq.com/mcp	answers-mcp	2

23 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.