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
com.whensport/wc-2026
https://whensport.com/mcp/wc
404 not listed whensport.com
com.whensport/whensport
https://whensport.com/mcp
404 not listed whensport.com
com.wherobots/mcp-server
https://api.cloud.wherobots.com/mcp/
gated, needs a credential not listed api.cloud.wherobots.com
com.whimsical/mcp
https://mcp.whimsical.com/mcp
gated, needs a credential not listed mcp.whimsical.com
com.whooing/whooing
https://whooing.com/mcp
gated, needs a credential not listed whooing.com
com.wickfunded/trading
https://wickfunded.com/api/mcp
gated, needs a credential not listed wickfunded.com
com.wikitolica/mcp
https://www.wikitolica.com/mcp
JSON-RPC error not listed www.wikitolica.com
com.wildrunai/mcp-validator
https://wildrunai.com/api/mcp
404 not listed wildrunai.com
com.windbornesystems/weather
https://weather-mcp.windbornesystems.com/mcp
gated, needs a credential not listed weather-mcp.windbornesystems.com
com.windowsforum/mcp-server
https://mcp.windowsforum.com
unreachable not listed mcp.windowsforum.com
com.windowsforum/mcp-server
https://mcp.windowsforum.com/
unreachable not listed mcp.windowsforum.com
com.wix/mcp
https://mcp.wix.com/sse
gated, needs a credential not listed mcp.wix.com
com.wix/mcp
https://mcp.wix.com/mcp
gated, needs a credential not listed mcp.wix.com
com.wizerapi/contract-intelligence
https://mcp.wizerapi.com/contracts
server error not listed mcp.wizerapi.com
com.wizerapi/review-intelligence
https://mcp.wizerapi.com/reviews
server error not listed mcp.wizerapi.com
com.wolfram/mcp
https://agenttools.wolfram.com/mcp
404 not listed agenttools.wolfram.com
com.woopsocial/mcp
https://api.woopsocial.com/mcp
gated, needs a credential not listed api.woopsocial.com
com.workos/mcp
https://mcp.workos.com/mcp
gated, needs a credential not listed mcp.workos.com
com.worldairfares/flights-mcp
https://mcp.worldairfares.com/mcp
404 not listed mcp.worldairfares.com
com.worldku/memory
https://mcp.worldku.com/mcp
gated, needs a credential not listed mcp.worldku.com
com.wphealthkit/mcp-server
https://mcp.wphealthkit.com/mcp
gated, needs a credential not listed mcp.wphealthkit.com
com.wpwriter/wordpress
https://mcp.wpwriter.com/mcp
gated, needs a credential not listed mcp.wpwriter.com
com.wpwriter/wordpress
https://mcp.wpwriter.com/sse
JSON-RPC error not listed mcp.wpwriter.com
com.x1wealth/x1
https://mcp.x1wealth.com/mcp
gated, needs a credential not listed mcp.x1wealth.com
com.xdogtrading/xdog
https://api.xdogtrading.com/mcp
gated, needs a credential not listed api.xdogtrading.com
com.xhostd/mcp
https://mcp.xhostd.com/mcp/
gated, needs a credential not listed mcp.xhostd.com
com.xnotepadai/notes
https://www.xnotepadai.com/api/mcp/
JSON-RPC error not listed www.xnotepadai.com
com.xquik/mcp
https://xquik.com/mcp
gated, needs a credential not listed xquik.com
com.xverum/mcp
https://mcp.xverum.com/mcp
gated, needs a credential not listed mcp.xverum.com
com.xweather/weather
https://mcp.api.xweather.com/mcp
gated, needs a credential not listed mcp.api.xweather.com
com.youtubestudiomcp/youtube-studio
https://mcp.youtubestudiomcp.com/api/mcp
gated, needs a credential not listed mcp.youtubestudiomcp.com
com.zalize.leads/leadsleuth
https://leads.zalize.com/api/mcp
gated, needs a credential not listed leads.zalize.com
com.zapier/mcp
https://mcp.zapier.com/api/v1/connect
gated, needs a credential not listed mcp.zapier.com
com.zelesia/zelesia
https://mcp.zelesia.com/mcp
gated, needs a credential not listed mcp.zelesia.com
com.zenovay/analytics
https://api.zenovay.com/mcp
gated, needs a credential not listed api.zenovay.com
com.zernote/zernote
https://zernote.com/mcp
gated, needs a credential not listed zernote.com
com.zeroheight/zeroheight
https://mcp.zeroheight.com/mcp/{token}
answered, not MCP not listed mcp.zeroheight.com
com.zeroheight/zeroheight
https://mcp.zeroheight.com/mcp
gated, needs a credential not listed mcp.zeroheight.com
com.zetadeck/zetadeck
https://zetadeck.com/mcp
gated, needs a credential not listed zetadeck.com
com.zigpoll/zigpoll-mcp
https://mcp.zigpoll.com/mcp
gated, needs a credential not listed mcp.zigpoll.com
com.zillapi/zillow-mcp
https://api.zillapi.com/mcp
gated, needs a credential not listed api.zillapi.com
com.zomato/mcp
https://mcp-server.zomato.com/mcp
gated, needs a credential not listed mcp-server.zomato.com
com.zoninga/finance
https://zoninga.com/mcp
gated, needs a credential not listed zoninga.com
com.zoxron/mcp
https://zoxron.com/mcp
gated, needs a credential not listed zoxron.com
com.zype.mcp/server
https://mcp.zype.com/mcp
gated, needs a credential not listed mcp.zype.com
com.zyphe/zyphe-mcp
https://api.zyphe.com/mcp
gated, needs a credential not listed api.zyphe.com
sequel-consulting
https://api.sequel.consulting/mcp.php
answers a handshake not listed api.sequel.consulting
cool.asap/mcp
https://mcp.asap.cool/mcp
gated, needs a credential not listed mcp.asap.cool
cool.cron/croncool
https://mcp.cron.cool/mcp
gated, needs a credential not listed mcp.cron.cool
cv.touchstone/touchstone
https://touchstone.cv/mcp
gated, needs a credential not listed touchstone.cv
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