MCP servers, called rather than listed

8,642 answer a handshake (51.1%)
4,068 gated, not broken (24.0%)
4,213 failed outright (24.9%)
130,518 tools indexed

Gated is not broken. 4,068 of these servers answer with a 401 or 403. They are running and want a credential we do not have. A checker that treats them as dead is wrong about 24.0% of the registry before it starts, so we count them separately and always will.

16,923 matching.

server	result	tools	host
Flow Studio MCP https://mcp.flowstudio.app/mcp	answers a handshake	34	mcp.flowstudio.app
pipeworx-gateway https://gateway.pipeworx.io/abn-lookup/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/abs-au/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/abuseipdb/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/advice/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/ai-feeds/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/airports/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/alienvault-otx/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/alpaca/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/anilist/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/animequotes/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arbeitnow/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-abbotsford/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-adamscounty/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-albuquerque/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-allegheny/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-asheville/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-aurora/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-austin/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-berkscounty/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-brampton/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-branson/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-carlsbad/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-cary/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-castateparks/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-cedarpark/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-centennial/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-chapelhill/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-charleston/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-charlotte/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-chatham/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-chestercounty/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-coquitlam/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-courtenay/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-cranston/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-cumberland/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-cupertino/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-dc/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-delawareco/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-detroit/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-dublinoh/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-dukescounty/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-durham/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-eagan/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-eastbatonrouge/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-fairfax/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-fairfield/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-fallschurch/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-fauquier/mcp	answers a handshake	34	gateway.pipeworx.io
pipeworx-gateway https://gateway.pipeworx.io/arcgis-flagstaff/mcp	answers a handshake	34	gateway.pipeworx.io