`list_lists`

7 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
@trycourier/courier-mcp https://mcp.courier.com	answers-mcp	144
pipeworx-gateway https://gateway.pipeworx.io/activecampaign/mcp	answers-mcp	37
postari https://postari.io/api/mcp	answers-mcp	37
datamerge-mcp https://mcp.datamerge.ai	answers-mcp	23
sponsorable https://app.sponsorable.com/mcp	answers-mcp	17
machfive https://mcp.machfive.io/mcp/{api_key}	answers-mcp	6
machfive https://mcp.machfive.io/mcp	answers-mcp	6

7 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.