`check_balance`

13 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
heista https://www.heista.co/api/mcp/mcp	answers-mcp	118
switch https://mcp.switchapp.ai/mcp	answers-mcp	58
com.scriptivox.www/transcription https://platform.scriptivox.com/mcp	answers-mcp	39
ProductClank https://mcp.productclank.com/mcp	answers-mcp	36
pikasim https://pikasim.com/mcp	answers-mcp	31
buyukesim https://buyukesim.com/mcp	answers-mcp	19
unifically https://mcp.unifically.com/mcp	answers-mcp	14
kairos-signal-mcp https://kairossignal.com/mcp	answers-mcp	12
nautilinks-mcp https://mcp.nautilinks.co/mcp	answers-mcp	11
russia-access https://ruscrape.com/mcp	answers-mcp	9
potarix-enricher https://api.potarix.com/mcp	answers-mcp	9
acuris-geo https://api.acuris-geo.com/mcp	answers-mcp	8
SendThisFax https://www.sendthisfax.com/mcp	answers-mcp	4

13 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.