MCP servers, called rather than listed

Every remote server in the official MCP registry, sent one real initialize handshake. 16,923 servers across 11,823 hosts.

Search what these servers can do · read the measurement

Last checked 2026-09-06. We send a handshake, we do not authenticate and we do not call a tool.

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.

serverresulttoolshost
trendsmcp
https://wikipedia.api.trendsmcp.ai/mcp
answers a handshake not listed wikipedia.api.trendsmcp.ai
trendsmcp
https://x-twitter.api.trendsmcp.ai/mcp
answers a handshake not listed x-twitter.api.trendsmcp.ai
trendsmcp
https://youtube.api.trendsmcp.ai/mcp
answers a handshake not listed youtube.api.trendsmcp.ai
ai.trustgrowth/trustgrowth
https://trustgrowth.ai/mcp
gated, needs a credential not listed trustgrowth.ai
ai.trycanonical/company-search
https://trycanonical.ai/mcp
gated, needs a credential not listed trycanonical.ai
ai.tunnelmind/sigil
https://mcp.sigil.tunnelmind.ai/mcp
JSON-RPC error not listed mcp.sigil.tunnelmind.ai
ai.turingtap/turingtap
https://mcp.turingtap.ai/sse
answered, not MCP not listed mcp.turingtap.ai
ai.tuteliq/mcp
https://api.tuteliq.ai/mcp
gated, needs a credential not listed api.tuteliq.ai
ai.unlimitless/unl
https://api.unlimitless.ai/mcp
gated, needs a credential not listed api.unlimitless.ai
ai.upriver/upriver
https://mcp.upriver.ai/mcp
gated, needs a credential not listed mcp.upriver.ai
ai.usealloy/alloy
https://aus.usealloy.ai/mcp
gated, needs a credential not listed aus.usealloy.ai
ai.usegoro/goro
https://mcp.usegoro.ai/mcp
gated, needs a credential not listed mcp.usegoro.ai
ai.uselamina/lamina
https://app.uselamina.ai/mcp/agent
gated, needs a credential not listed app.uselamina.ai
ai.usenotch/notch
https://app.usenotch.ai/mcp
gated, needs a credential not listed app.usenotch.ai
ai.userintuition/research
https://mcp.userintuition.ai/mcp
gated, needs a credential not listed mcp.userintuition.ai
ai.usertold/usertold-mcp
https://mcp.usertold.ai/mcp
gated, needs a credential not listed mcp.usertold.ai
ai.usestring/web-access
https://mcp.usestring.ai/v1/mcp
gated, needs a credential not listed mcp.usestring.ai
ai.uxbert/cms
https://cms-mcp.uxbert.ai/mcp
gated, needs a credential not listed cms-mcp.uxbert.ai
ai.veecle/chiplab
https://chiplab.veecle.ai/mcp
gated, needs a credential not listed chiplab.veecle.ai
ai.velvt/velvt
https://www.velvt.ai/mcp
gated, needs a credential not listed www.velvt.ai
ai.verant/verant
https://verant.ai/mcp
gated, needs a credential not listed verant.ai
ai.vergio/vergio
https://vergio.ai/api/mcp
gated, needs a credential not listed vergio.ai
ai.verificate/mcp
https://verificate-portal-verificate-granite-4-small.apps.gpu4.fusion.isys.hpc.dc.uq.edu.au/mcp
server error not listed verificate-portal-verificate-granite-4-small.apps.gpu4.fusion.isys.hpc.dc.uq.edu.au
ai.vibe-bi/mcp-server
https://mcp.vibe-bi.ai
gated, needs a credential not listed mcp.vibe-bi.ai
ai.videozero.engine/mcp
https://engine.videozero.ai/mcp
gated, needs a credential not listed engine.videozero.ai
ai.vidocu/vidocu
https://mcp.vidocu.ai/
gated, needs a credential not listed mcp.vidocu.ai
ai.viite/business-studio
https://platform-api.viite.ai/api/mcp
gated, needs a credential not listed platform-api.viite.ai
ai.viralspin/viralspin
https://mcp.viralspin.ai/mcp
gated, needs a credential not listed mcp.viralspin.ai
ai.visuary/actuarial-value-calculator
https://mcp.visuary.ai/av
gated, needs a credential not listed mcp.visuary.ai
ai.vocci/mcp
https://mcp.vocci.ai/mcp
gated, needs a credential not listed mcp.vocci.ai
ai.vortexiq/vortex-iq
https://app.vortexiq.ai/mcp
gated, needs a credential not listed app.vortexiq.ai
ai.voxplo/voxplo
https://mcp.voxplo.ai/mcp
gated, needs a credential not listed mcp.voxplo.ai
ai.vruum/mcp
https://api.vruum.ai/mcp
gated, needs a credential not listed api.vruum.ai
ai.vulx/watch
https://mcp.vulx.ai/mcp
gated, needs a credential not listed mcp.vulx.ai
ai.walterwrites/mcp-server
https://mcp-server.walterwrites.ai/mcp
gated, needs a credential not listed mcp-server.walterwrites.ai
ai.waterr/mcp
https://api.waterr.ai/v1/mcp
gated, needs a credential not listed api.waterr.ai
ai.wavn/wavn
https://my.wavn.app/api/mcp
gated, needs a credential not listed my.wavn.app
ai.waystation/airtable
https://waystation.ai/airtable/mcp
JSON-RPC error not listed waystation.ai
ai.waystation/airtable
https://waystation.ai/airtable/mcp/sse
JSON-RPC error not listed waystation.ai
ai.waystation/gmail
https://waystation.ai/gmail/mcp
JSON-RPC error not listed waystation.ai
ai.waystation/gmail
https://waystation.ai/gmail/mcp/sse
JSON-RPC error not listed waystation.ai
ai.waystation/jira
https://waystation.ai/jira/mcp
JSON-RPC error not listed waystation.ai
ai.waystation/jira
https://waystation.ai/jira/mcp/sse
JSON-RPC error not listed waystation.ai
ai.waystation/mcp
https://waystation.ai/mcp
JSON-RPC error not listed waystation.ai
ai.waystation/mcp
https://waystation.ai/mcp/sse
JSON-RPC error not listed waystation.ai
ai.waystation/miro
https://waystation.ai/miro/mcp
JSON-RPC error not listed waystation.ai
ai.waystation/miro
https://waystation.ai/miro/mcp/sse
JSON-RPC error not listed waystation.ai
ai.waystation/monday
https://waystation.ai/monday/mcp
JSON-RPC error not listed waystation.ai
ai.waystation/monday
https://waystation.ai/monday/mcp/sse
JSON-RPC error not listed waystation.ai
ai.waystation/office
https://waystation.ai/office/mcp
JSON-RPC error not listed waystation.ai
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