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.scientificmicroservices/mcp
https://mcp.scientificmicroservices.com/mcp
unreachable not listed mcp.scientificmicroservices.com
scrap-autos-mcp
https://scrap-autos.com/mcp/v1
answers a handshake not listed scrap-autos.com
com.scraper-api/scraper-api
https://api.scraper-api.com/mcp
unreachable not listed api.scraper-api.com
com.scrapeunblocker/scrapeunblocker-mcp-remote
https://mcp.scrapeunblocker.com/mcp
unreachable not listed mcp.scrapeunblocker.com
com.scraptik/tiktok
https://mcp.scraptik.com/mcp
unreachable not listed mcp.scraptik.com
com.screenmocks/screenmocks
https://www.screenmocks.com/api/mcp
gated, needs a credential not listed www.screenmocks.com
com.screenshotink/mcp
https://mcp.screenshotink.com/mcp
gated, needs a credential not listed mcp.screenshotink.com
com.screenshotscout/mcp
https://mcp.screenshotscout.com/mcp/api-key
gated, needs a credential not listed mcp.screenshotscout.com
com.scribblecards/handwritten-cards
https://scribblecards.com/api/mcp
gated, needs a credential not listed scribblecards.com
com.scribe-mail/scribe
https://mcp.scribe-mail.com/mcp
gated, needs a credential not listed mcp.scribe-mail.com
com.scriptmasterlabs/provider-trust
https://www.scriptmasterlabs.com/api/openai-mcp
answered, not MCP not listed www.scriptmasterlabs.com
com.scriptmasterlabs/squeezeos
https://www.scriptmasterlabs.com/mcp
answered, not MCP not listed www.scriptmasterlabs.com
com.scrollport/mcp
https://mcp.scrollport.com/
gated, needs a credential not listed mcp.scrollport.com
com.scrubmytext/tools
https://api.scrubmytext.com/mcp
answers a handshake not listed api.scrubmytext.com
com.seatswiper/booking
https://www.seatswiper.com/api/mcp
gated, needs a credential not listed www.seatswiper.com
com.seespectral/oracle
https://mcp.seespectral.com/mcp
unreachable not listed mcp.seespectral.com
com.seggwat/mcp
https://seggwat.com/mcp
gated, needs a credential not listed seggwat.com
seishorei-wakarukun
https://seishorei-wakarukun.com/api/mcp
answers a handshake not listed seishorei-wakarukun.com
selfielab
https://selfielabstudio.com/api/mcp
answers a handshake not listed selfielabstudio.com
com.sematryx/optimizer
https://mcp.sematryx.com/sse
unreachable not listed mcp.sematryx.com
com.senderkit/senderkit
https://mcp.senderkit.com
gated, needs a credential not listed mcp.senderkit.com
com.sendifai/platform
https://www.sendifai.com/api/mcp
gated, needs a credential not listed www.sendifai.com
com.sendpulse.mcp/mcp-server
https://mcp.sendpulse.com/mcp
gated, needs a credential not listed mcp.sendpulse.com
com.sendquotenow/quote-engine
https://sendquotenow.com/mcp
gated, needs a credential not listed sendquotenow.com
com.senprints.mcp/seller
https://api.senprints.com/mcp/seller
unreachable not listed api.senprints.com
com.senzii/scheduling
https://senzii.com/mcp
404 not listed senzii.com
meta
https://meta.seoapi.com/mcp
answers a handshake not listed meta.seoapi.com
naverbot
https://naverbot.seoapi.com/mcp
answers a handshake not listed naverbot.seoapi.com
com.seoapi/openai
https://openai.seoapi.com/mcp
bad request not listed openai.seoapi.com
com.seoapi/perplexitybot
https://perplexitybot.seoapi.com/mcp
bad request not listed perplexitybot.seoapi.com
com.seoapi/petalbot
https://petalbot.seoapi.com/mcp
bad request not listed petalbot.seoapi.com
com.seoapi/seznambot
https://seznambot.seoapi.com/mcp
bad request not listed seznambot.seoapi.com
com.seoapi/sogouwebspider
https://sogouwebspider.seoapi.com/mcp
bad request not listed sogouwebspider.seoapi.com
com.seoapi/yahooslurp
https://yahooslurp.seoapi.com/mcp
bad request not listed yahooslurp.seoapi.com
com.seoapi/yandexbot
https://yandexbot.seoapi.com/mcp
bad request not listed yandexbot.seoapi.com
com.seogrep/seogrep
https://mcp.seogrep.com/mcp/{key}
gated, needs a credential not listed mcp.seogrep.com
com.seomely/seomely
https://seomely.com/api/mcp
gated, needs a credential not listed seomely.com
com.sequentum/mcp
https://mcp.sequentum.com/mcp
unreachable not listed mcp.sequentum.com
com.seranking/mcp
https://api.seranking.com/mcp
gated, needs a credential not listed api.seranking.com
com.serp-agent/seo
https://serp-agent.com/mcp
gated, needs a credential not listed serp-agent.com
com.serpdive/serpdive-mcp
https://mcp.serpdive.com/mcp
gated, needs a credential not listed mcp.serpdive.com
com.serpstat/mcp
https://mcp.serpstat.com/mcp
gated, needs a credential not listed mcp.serpstat.com
com.server4agent/server4agent
https://mcp.server4agent.com
gated, needs a credential not listed mcp.server4agent.com
com.session-replay/session-replay
https://session-replay.com/mcp
gated, needs a credential not listed session-replay.com
com.setfork/setfork
https://setfork.com/api/mcp
gated, needs a credential not listed setfork.com
com.setix/clearinghouse
https://mcp.setix.dev/mcp
server error not listed mcp.setix.dev
Singapore Property Market Data
https://sgpropertydata.com/mcp/
answers a handshake not listed sgpropertydata.com
com.shaftware/componecat
https://app.componecat.ai/api/mcp
gated, needs a credential not listed app.componecat.ai
com.shamra-academia/research
https://shamra-academia.com/mcp
gated, needs a credential not listed shamra-academia.com
com.shamra-academia/research
https://mcp.shamra-academia.com/mcp
gated, needs a credential not listed mcp.shamra-academia.com
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