`list_skills`

19 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
multi-source-mcp https://mcp2.corpusiq.io/mcp	answers-mcp	138
heista https://www.heista.co/api/mcp/mcp	answers-mcp	118
API Direct https://apidirect.io/mcp	answers-mcp	83
tweetsmash-mcp https://mcp.tweetsmash.com/api/mcp	answers-mcp	53
agent4-io https://api.agent4.io/v1/mcp	answers-mcp	50
agentplaybooks-management https://agentplaybooks.ai/api/mcp/manage	answers-mcp	49
humanMCP — kapoost https://kapoost-humanmcp.fly.dev/mcp	answers-mcp	42
humanMCP — kapoost https://kapoost.humanmcp.net/mcp	answers-mcp	42
Flow Studio MCP https://mcp.flowstudio.app/mcp	answers-mcp	34
blackbook-advisor https://theblackbook.pro	answers-mcp	25
knownfix https://knownfix-backend-28.b-hash88.deno.net/mcp	answers-mcp	17
mitosis https://mitosislabs.ai/api/mcp	answers-mcp	14
openaccountants-mcp https://www.openaccountants.com/api/mcp	answers-mcp	14
alter-onboarding https://mcp.alterauth.com/mcp	answers-mcp	13
123skills https://123skills.site/mcp	answers-mcp	12
opchain https://opchain.dev/mcp	answers-mcp	7
marketing-skills-directory https://marketingskills.directory/wp-json/mkt/v1/mcp	answers-mcp	7
jaroslavkazejev-profile https://mcp.kazejev.com/mcp	answers-mcp	6
meshkore-mcp https://mcp.meshkore.com/v1/mcp	answers-mcp	3

19 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.