`validate_iban`

14 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
qiniso https://qiniso.qinisolabs.workers.dev/mcp	answers-mcp	56
toolforte https://toolforte.com/api/mcp/mcp	answers-mcp	40
imperio-mcp https://imperioutils.com/api/mcp	answers-mcp	28
eucompliance-tools https://mcp.eucompliance.tools/mcp	answers-mcp	24
swiss-army https://swiss.api.ainode.tech/mcp	answers-mcp	23
chainverdict https://chainverdict.xyz/mcp	answers-mcp	20
eu-verify https://data.greeneris.io/mcp	answers-mcp	19
commerce-validators https://mcp.scienceswarm.org/mcp	answers-mcp	10
ibanforge https://api.ibanforge.com/mcp	answers-mcp	9
validation-api https://validation-api.dropcoin.workers.dev/mcp	answers-mcp	6
utility-api https://utility-api.dropcoin.workers.dev/mcp	answers-mcp	5
ibanchecker-mcp https://mcp.ibanchecker.cash/mcp	answers-mcp	5
fabtally-valid https://valid.fabtally.com/mcp	answers-mcp	5
WinkelFactuur https://api.winkelfactuur.nl/mcp	answers-mcp	3

14 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.