`get_air_quality`

11 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
slacking-biz https://slacking.biz/mcp	answers-mcp	75
gadgethumans-mcp https://api.gadgethumans.com/mcp	answers-mcp	46
mellowmountainradio https://mcp.mellowmountainradio.com/mcp	answers-mcp	46
pipeworx-gateway https://gateway.pipeworx.io/science/mcp	answers-mcp	35
pipeworx-gateway https://gateway.pipeworx.io/airquality/mcp	answers-mcp	33
sw-mcp https://mcp.smarterweather.com	answers-mcp	32
luxembourg-mcp https://mcp.luxembourg-mcp.com/mcp	answers-mcp	28
crosbynews-weather https://crosbynews.com/mcp	answers-mcp	14
suomiatlas https://suomiatlas.com/api/mcp	answers-mcp	9
Korean Public Data https://korean-public-data-mcp.onrender.com/mcp	answers-mcp	6
air-quality https://ads.getlulu.dev/air-quality/mcp	answers-mcp	1

11 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.