`list_campaigns`

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
adbutler https://mcp.adbutler.com/mcp	answers-mcp	627
argo-mcp https://mcp.argo.games/mcp	answers-mcp	62
zobrx https://mcp.zobrx.com/mcp	answers-mcp	58
misarmail https://api.misar.io/mail/mcp	answers-mcp	54
salesagent-mcp https://app.salesbot.cz/api/mcp	answers-mcp	50
ProductClank https://mcp.productclank.com/mcp	answers-mcp	36
mailcannon https://www.thinkandautomate.dev/api/mcp	answers-mcp	34
agent-cold-email https://agent-cold-email-api.yaakovscher.workers.dev/mcp	answers-mcp	28
adbloop https://mcp.adbloop.com/mcp	answers-mcp	23
PPToGo MCP Server https://pptogo.com/api/mcp	answers-mcp	20
supovia-mcp https://mcp.supovia.com/mcp	answers-mcp	14
nose-for-leads https://api.noseforleads.com/mcp	answers-mcp	11
machfive https://mcp.machfive.io/mcp/{api_key}	answers-mcp	6
machfive https://mcp.machfive.io/mcp	answers-mcp	6

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.