`check_availability`

30 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
nw-terminal https://namewhisper.ai/mcp	answers-mcp	44
tabak-brucker-shop https://mcp.tabak-brucker.de/mcp	answers-mcp	20
tunnel-knowledge-base https://api.tunnelpowered.com/api/mcp	answers-mcp	17
escola-de-radio https://www.escoladeradio.com.br/api/mcp	answers-mcp	15
sparkling-tracks https://mcp.sparklingtracks.com/mcp	answers-mcp	15
travellers-agent https://agent.travellersgroup.com.au/v1/mcp	answers-mcp	12
tempguru-mcp https://mcp.tempguru.co/mcp	answers-mcp	12
mcp-typescript server on vercel https://api.chartercaptain.com/mcp/mcp	answers-mcp	10
Emora Health https://www.emorahealth.com/api/mcp/v1	answers-mcp	10
TableAll MCP Server https://mcp.tableall.com/sse	answers-mcp	10
qasper https://qasper.ai/mcp	answers-mcp	10
trusgent-trust-layer https://www.trusgent.com/api/mcp	answers-mcp	10
guruwalk https://back.guruwalk.com/mcp	answers-mcp	9
refugio-san-bernardo-public https://hawudqgbvwmgwhhcbthb.supabase.co/functions/v1/mcp-public	answers-mcp	9
g-guest https://g-guest.app/api/mcp	answers-mcp	8
myoutfitters https://myoutfitters.ca/mcp	answers-mcp	8
popdot-mcp https://popdot.ai/api/mcp	answers-mcp	7
greengooding https://mcp.greengooding.com/mcp	answers-mcp	7
orbit https://the-orbit.ch/api/mcp	answers-mcp	6
hirelocksmiths https://hirelocksmiths-mcp.onrender.com/mcp	answers-mcp	6
blumen-komander https://mcp.blumen-verschicken.online/mcp	answers-mcp	6
hood https://www.hood.ag/api/mcp	answers-mcp	5
Aivonic https://mcp.aivonic.ai	answers-mcp	5
gc-airport-transfers https://gc-airporttransfers.com/wp-json/atb-gateway/v1/mcp	answers-mcp	4
lilla-alva-booking https://lilla-alva.com/api/mcp	answers-mcp	4
Opus Lumière Booking https://opuslumiere.com/wp-json/opus-booking/v1/mcp	answers-mcp	4
zwitchy-mcp https://zwitchy.io/api/mcp	answers-mcp	4
fold-laboratories-art https://api.foldlaboratories.com/mcp	answers-mcp	3
sonlight-window-cleaning https://sonlightwindow.com/mcp	answers-mcp	3
com.letshum/internet-availability https://mcp.letshum.com/mcp	answers-mcp	1

30 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.