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.intencheck/intencheck
https://intencheck.com/mcp
gated, needs a credential not listed intencheck.com
com.intentwake/intentwake
https://mcp.intentwake.com/mcp
gated, needs a credential not listed mcp.intentwake.com
com.invoicebadger/invoice-badger
https://invoicebadger.com/mcp
unreachable not listed invoicebadger.com
com.invoicexml/invoicexml
https://mcp.invoicexml.com
unreachable not listed mcp.invoicexml.com
com.iridiumhqmcp/iridium
https://api.iridiumhqmcp.com/mcp
gated, needs a credential not listed api.iridiumhqmcp.com
com.ironcladverified/verified
https://ironcladverified.com/mcp
unreachable not listed ironcladverified.com
com.iso20022generator/mcp
https://mcp.iso20022generator.com/mcp
gated, needs a credential not listed mcp.iso20022generator.com
com.iterationlayer/mcp
https://api.iterationlayer.com/mcp
404 not listed api.iterationlayer.com
com.iwebdevelopment/afas
https://mcp-afas.iwebdevelopment.com
gated, needs a credential not listed mcp-afas.iwebdevelopment.com
com.iwebdevelopment/exact-online
https://mcp-exactonline.iwebdevelopment.com
gated, needs a credential not listed mcp-exactonline.iwebdevelopment.com
com.iwebdevelopment/twinfield
https://mcp-twinfield.iwebdevelopment.com
gated, needs a credential not listed mcp-twinfield.iwebdevelopment.com
com.jamesprompt/james
https://mcp.jamesprompt.com/mcp
gated, needs a credential not listed mcp.jamesprompt.com
jampolls-mcp
https://hub.jampolls.com/mcp
answers a handshake not listed hub.jampolls.com
com.jeikin/mcp
https://jeikin.com/api/mcp
gated, needs a credential not listed jeikin.com
com.jellypod/jellypod
https://mcp.jellypod.com/mcp
gated, needs a credential not listed mcp.jellypod.com
com.jepto/mcp
https://mcp.jepto.com
gated, needs a credential not listed mcp.jepto.com
com.jeremytwogood/portfolio
https://jeremytwogood.com/api/mcp
answered, not MCP not listed jeremytwogood.com
com.jitsu/mcp
https://use.jitsu.com/mcp
gated, needs a credential not listed use.jitsu.com
com.jnexum/jurisprudencia
https://jnexum.com/mcp
gated, needs a credential not listed jnexum.com
com.jobkeepr/jobkeepr
https://jobkeepr.com/mcp
gated, needs a credential not listed jobkeepr.com
com.johnsessentials/johns-essentials
https://api.johnsessentials.com/mcp/messages
gated, needs a credential not listed api.johnsessentials.com
com.joinnod/mcp
https://connect.joinnod.com/mcp
gated, needs a credential not listed connect.joinnod.com
com.joinsandwich/care-circle
https://app.joinsandwich.com/api/mcp
404 not listed app.joinsandwich.com
com.jotform/mcp
https://mcp.jotform.com/
gated, needs a credential not listed mcp.jotform.com
com.jpyc-info/jpyc-agent-mcp
https://jpyc-info.com/api/jpyc-agent-mcp
404 not listed jpyc-info.com
com.jumpcloud/jumpcloud-genai
https://mcp.jumpcloud.com/v1
gated, needs a credential not listed mcp.jumpcloud.com
com.jumpseller/admin-mcp
https://mcp.jumpseller.com/
gated, needs a credential not listed mcp.jumpseller.com
com.junglecleaner/mcp
https://junglecleaner.com/api/mcp
gated, needs a credential not listed junglecleaner.com
com.jupiterinvoice/server
https://jupiterinvoice.com/mcp
gated, needs a credential not listed jupiterinvoice.com
com.jupitersignup/jupitersignup
https://jupitersignup.com/mcp
gated, needs a credential not listed jupitersignup.com
com.juudd/juudd
https://mcp.juudd.com/mcp
gated, needs a credential not listed mcp.juudd.com
com.k-phi/kphi
https://k-phi.com/mcp
gated, needs a credential not listed k-phi.com
com.kai-agi.mcp/kai-agi
https://mcp.kai-agi.com/mcp
server error not listed mcp.kai-agi.com
com.kaicalls/kaicalls
https://www.kaicalls.com/api/mcp
gated, needs a credential not listed www.kaicalls.com
com.kajabi/kajabi
https://mcp.kajabi.com/mcp
gated, needs a credential not listed mcp.kajabi.com
com.kalshi-mcp/kalshi
https://kalshi-mcp.com/api/mcp
gated, needs a credential not listed kalshi-mcp.com
com.kaneme/kaneme
https://kaneme.com/api/mcp
gated, needs a credential not listed kaneme.com
com.karusele/mcp
https://mcp.karusele.com/mcp
gated, needs a credential not listed mcp.karusele.com
com.kbdsystems/machine
https://{business}.kbdsystems.com/api/mcp
unreachable not listed {business}.kbdsystems.com
com.kdpcoloringbook/studio
https://api.kdpcoloringbook.com/mcp/
gated, needs a credential not listed api.kdpcoloringbook.com
com.keboola/mcp
https://mcp.us-east4.gcp.keboola.com/mcp
gated, needs a credential not listed mcp.us-east4.gcp.keboola.com
com.keepmysubs/keepmysubs
https://keepmysubs.com/mcp
gated, needs a credential not listed keepmysubs.com
com.kimoun/spip
https://mcp-spip.kimoun.com/mcp
gated, needs a credential not listed mcp-spip.kimoun.com
com.kiprarent/kipra-rent-a-car
https://mcp.kiprarent.com/mcp
gated, needs a credential not listed mcp.kiprarent.com
com.kiuli/kiuli
https://kiuli.com/api/mcp/mcp
gated, needs a credential not listed kiuli.com
com.knotrik/knotrik
https://mcp.knotrik.com/mcp
gated, needs a credential not listed mcp.knotrik.com
com.knowalabs/knowa
https://app.knowalabs.com/api/mcp
unreachable not listed app.knowalabs.com
com.knowledge-raven/mcp
https://mcp.knowledge-raven.com/mcp
unreachable not listed mcp.knowledge-raven.com
com.koalcheck/koalcheck
https://mcp.koalcheck.com/mcp
answered, not MCP not listed mcp.koalcheck.com
com.kompetic/joti
https://joti.kompetic.com/api/ai/mcp
gated, needs a credential not listed joti.kompetic.com
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