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
io.github.jyswee/taufunctions
https://mcp.taufunctions.com/sse
404 not listed mcp.taufunctions.com
io.github.kaizan-ai/kaizan
https://app.kaizan.ai/api/mcp/v1/
gated, needs a credential not listed app.kaizan.ai
io.github.kajaril/sovereignty-scan-mcp
https://sovereignty-scan.kajaril.com/mcp
gated, needs a credential not listed sovereignty-scan.kajaril.com
io.github.kale-eb/vyra
https://api.usevyra.com/mcp
gated, needs a credential not listed api.usevyra.com
io.github.kandahk/shiped
https://shiped.app/mcp
gated, needs a credential not listed shiped.app
io.github.katalon-studio/testops-mcp
https://product-katalon.katalon.io/mcp
gated, needs a credential not listed product-katalon.katalon.io
io.github.katalon-studio/testops-mcp
https://platform.katalon.io/mcp
gated, needs a credential not listed platform.katalon.io
io.github.kazuki-sf/glasp
https://glasp.co/api/mcp
unreachable not listed glasp.co
io.github.kbanilsson-pixel/nerq-trust-engine
https://mcp.zarq.ai/sse
404 not listed mcp.zarq.ai
io.github.kbrayatl/repscale
https://app.repscale.ai/api/mcp
gated, needs a credential not listed app.repscale.ai
io.github.kc23go/anybrowse
https://anybrowse.dev/mcp
unreachable not listed anybrowse.dev
io.github.kemalyy/edumints-scorm-mcp
https://scorm.edumints.com/mcp
gated, needs a credential not listed scorm.edumints.com
io.github.kensaurus/mushi-mushi
https://api.mushimushi.dev/functions/v1/mcp
unreachable not listed api.mushimushi.dev
io.github.kensaurus/mushi-mushi
https://dxptnwrhwsqckaftyymj.supabase.co/functions/v1/mcp
gated, needs a credential not listed dxptnwrhwsqckaftyymj.supabase.co
io.github.kentcdodds/kody
https://heykody.dev/mcp
gated, needs a credential not listed heykody.dev
io.github.kentcdodds/kody
https://heykody.app/mcp
gated, needs a credential not listed heykody.app
io.github.kentcdodds/kody
https://kody.codes/mcp
gated, needs a credential not listed kody.codes
io.github.kenvaapp/kenva
https://kenva-crm-mcp-server.kenva.workers.dev/mcp
404 not listed kenva-crm-mcp-server.kenva.workers.dev
io.github.ketherworks/codeforces
https://codeforces-oj-mcp.lantangtang54.workers.dev/mcp
server error not listed codeforces-oj-mcp.lantangtang54.workers.dev
io.github.kevincogan/demo-mcp-server
https://kevincogan.github.io/mcp
answered, not MCP not listed kevincogan.github.io
io.github.kgNatx/mockups-gallery
https://{host}/mcp
unreachable not listed {host}
io.github.kgNatx/mockups-gallery
https://{host}/mcp/sse
unreachable not listed {host}
io.github.khadinakbaronline/humanizer-pro
https://texthumanizer.pro/mcp
gated, needs a credential not listed texthumanizer.pro
io.github.khadinakbaronline/humanizer-pro
https://texthumanizer.pro/sse
answered, not MCP not listed texthumanizer.pro
io.github.khaledmoayad/3ammiya
https://3ammiya.com/api/mcp/mcp
server error not listed 3ammiya.com
io.github.khalid-tounoussi-1/stil-ets-mcp
https://web-production-4729.up.railway.app/mcp
404 not listed web-production-4729.up.railway.app
io.github.khalidsaidi/a2abench
https://a2abench-mcp-remote-405318049509.us-central1.run.app/mcp
404 not listed a2abench-mcp-remote-405318049509.us-central1.run.app
io.github.khalidsaidi/a2abench
https://a2abench-mcp.web.app/mcp
404 not listed a2abench-mcp.web.app
io.github.khalidsaidi/ragmap
https://ragmap-api.web.app/mcp
404 not listed ragmap-api.web.app
io.github.khs0927/qwen38-free-gateway
https://qwen3-8-free-gateway-n995yy.v2.appdeploy.ai/api/mcp
gated, needs a credential not listed qwen3-8-free-gateway-n995yy.v2.appdeploy.ai
io.github.kimjin8/call-for-me
https://call-for-me.fly.dev/mcp/
unreachable not listed call-for-me.fly.dev
io.github.kimnchai/airport-transit-mcp
https://airport-transit-mcp.fly.dev/mcp
unreachable not listed airport-transit-mcp.fly.dev
io.github.kimnchai/korea-flight-mcp
https://korea-flight-mcp.fly.dev/mcp
unreachable not listed korea-flight-mcp.fly.dev
io.github.kimny1143/hoo-mcp
https://hoo-mcp.glasswerkskimny.workers.dev/mcp
gated, needs a credential not listed hoo-mcp.glasswerkskimny.workers.dev
io.github.kiranz38/aristocles-data-api
https://api.aristocles.com.au/mcp/mcp
gated, needs a credential not listed api.aristocles.com.au
io.github.kiranz38/aristocles-data-api
https://api.aristocles.com.au/mcp/mcp/
gated, needs a credential not listed api.aristocles.com.au
io.github.kitxor/checklist-day
https://mcp.checklist.day/sse
unreachable not listed mcp.checklist.day
io.github.kkohli-nyu/findvise-mcp
https://findvise.com/mcp/sse
unreachable not listed findvise.com
io.github.klei30/working-machines
https://app.workingmachines.dev/mcp
gated, needs a credential not listed app.workingmachines.dev
io.github.knowledgepa3/gia-mcp-server
https://gia.aceadvising.com/mcp
gated, needs a credential not listed gia.aceadvising.com
io.github.koreal6803/finlab-ai
https://finlab-ai.koreal6803.workers.dev/mcp
404 not listed finlab-ai.koreal6803.workers.dev
io.github.kotinder/roomcomm
https://roomcomm.xyz/mcp
unreachable not listed roomcomm.xyz
io.github.koynlabs/koyn-fx
https://agent.koynfx.com/mcp
gated, needs a credential not listed agent.koynfx.com
io.github.koynlabs/plott
https://plott.uk/api/mcp
gated, needs a credential not listed plott.uk
io.github.krayinc/docbase
https://mcp.docbase.io/mcp
gated, needs a credential not listed mcp.docbase.io
io.github.krishtoautomate/robotactions
https://{tenant}.robotactions.com/mcp/sse
unreachable not listed {tenant}.robotactions.com
io.github.krishtoautomate/robotactions
https://{tenant}.robotactions.com/mcp
unreachable not listed {tenant}.robotactions.com
io.github.kristof-sudo/agentcrush-app
https://www.agentcrush.xyz/api/mcp/v1
answered, not MCP not listed www.agentcrush.xyz
io.github.ksmin83-bot/aihub
https://seenthis.kr/aihubsys/mcp
answered, not MCP not listed seenthis.kr
DanNet
https://wordnet.dk/mcp
answers a handshake not listed wordnet.dk
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