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.IndoTender/thecompanyatlas
https://thecompanyatlas.com/mcp
gated, needs a credential not listed thecompanyatlas.com
io.github.IndoTender/vietnam-tenders
https://thecompanyatlas.com/mcp/vietnam
gated, needs a credential not listed thecompanyatlas.com
io.github.Influship/sponsorbook-mcp
https://app.sponsorbook.io/mcp
gated, needs a credential not listed app.sponsorbook.io
io.github.InfoTrackGlobal/us
https://search.infotrack.com/services/mcp-us-server/mcp
gated, needs a credential not listed search.infotrack.com
io.github.Inistate/inistate-mcp
https://mcp.inistate.com/mcp
gated, needs a credential not listed mcp.inistate.com
io.github.InitechSoftware/whatsapp-mcp-by-timelinesai
https://mcp.services.timelines.ai/mcp
gated, needs a credential not listed mcp.services.timelines.ai
io.github.InsForge/insforge-mcp
https://mcp.insforge.dev/mcp
gated, needs a credential not listed mcp.insforge.dev
io.github.IntelCue/intelcue-mcp
https://api.intelcue.ai/v1/mcp/sse
gated, needs a credential not listed api.intelcue.ai
io.github.IsaiahDupree/calendar-bridge
https://calendarbridge.vercel.app/mcp
gated, needs a credential not listed calendarbridge.vercel.app
io.github.IsaiahDupree/messages-bridge
https://messagesbridge.vercel.app/mcp
gated, needs a credential not listed messagesbridge.vercel.app
io.github.IsaiahDupree/notesbridge
https://notesbridge.vercel.app/mcp
gated, needs a credential not listed notesbridge.vercel.app
io.github.IsaiahDupree/reminders-bridge
https://remindersbridge.vercel.app/mcp
gated, needs a credential not listed remindersbridge.vercel.app
io.github.IsaiahDupree/second-brain-bridge
https://secondbrainbridge.vercel.app/mcp
gated, needs a credential not listed secondbrainbridge.vercel.app
io.github.IsaiahDupree/shortcuts-bridge
https://shortcutsbridge.vercel.app/mcp
gated, needs a credential not listed shortcutsbridge.vercel.app
io.github.Iteksmart/mcp-server
https://mcp.itechsmart.dev/sse
404 not listed mcp.itechsmart.dev
io.github.ItsBreeze/grounders-mcp
https://mcp.grounders.app/mcp
gated, needs a credential not listed mcp.grounders.app
io.github.ItsMalware/the-lounge
https://the-lounge-520904066816.us-west1.run.app/mcp
server error not listed the-lounge-520904066816.us-west1.run.app
io.github.J0401/tx-esbd
https://mcp.apify.com?tools=j0401/tx-esbd-search,j0401/tx-esbd-get,j0401/tx-esbd-changes
gated, needs a credential not listed mcp.apify.com
io.github.JAIPilot/jaipilot
https://api.jaipilot.com/functions/v1/jaipilot-cloud/mcp
gated, needs a credential not listed api.jaipilot.com
io.github.JAIPilot/jaipilot
https://api.jaipilot.com/functions/v1/jaipilot/mcp
gated, needs a credential not listed api.jaipilot.com
io.github.JDWilliums/jamp
https://mcp.jamp.io/mcp
gated, needs a credential not listed mcp.jamp.io
io.github.JSONbored/heyclaude
https://heyclau.de/api/mcp
unreachable not listed heyclau.de
io.github.Jack-mi/aicia-ai-signal
https://aicia-mcp.lxsgocode123.workers.dev/mcp
gated, needs a credential not listed aicia-mcp.lxsgocode123.workers.dev
io.github.JackVitick/socialync
https://socialync-mcp-ntgtgrzanq-ue.a.run.app/mcp
gated, needs a credential not listed socialync-mcp-ntgtgrzanq-ue.a.run.app
io.github.JackVitick/socialync
https://mcp.socialync.io/mcp
gated, needs a credential not listed mcp.socialync.io
io.github.JajuanX/hometeam-directory
https://mcp.thehometeam.io/sse
404 not listed mcp.thehometeam.io
io.github.Jarvis-27/mcp-db-agent
https://plainquery.in/mcp/
unreachable not listed plainquery.in
io.github.JaviMaligno/vitamind
https://getvitamind.app/api/mcp-auth/mcp
gated, needs a credential not listed getvitamind.app
io.github.Jcjimenezglez/rosetta-mcp
https://rosettafolio.com/api/mcp
gated, needs a credential not listed rosettafolio.com
io.github.JdPG23/market-data-toolkit-mcp
https://mcp.apify.com?tools=jdepablos/ebay-sold-price-appraiser,jdepablos/second-hand-deal-scanner-es,jdepablos/borme-company-feed,jdepablos/spain-boe-auctions,jdepablos/trademark-watch-tmview,jdepablos/insider-trading-feed,jdepablos/clinical-trials-watch,jdepablos/startup-funding-feed,jdepablos/pokemon-card-price-checker,jdepablos/chrono24-watch-analyzer,jdepablos/catawiki-deal-finder,jdepablos/patent-watch,jdepablos/airbnb-market-analyzer,jdepablos/booking-hotel-price-analyzer,jdepablos/samgov-opportunities-feed,jdepablos/sec-13f-holdings-feed,jdepablos/companies-house-feed
gated, needs a credential not listed mcp.apify.com
io.github.JdPG23/market-data-toolkit-mcp
https://mcp.apify.com?tools=jdepablos/ebay-sold-price-appraiser,jdepablos/vinted-search-feed,jdepablos/second-hand-deal-scanner-es,jdepablos/borme-company-feed,jdepablos/spain-boe-auctions,jdepablos/trademark-watch-tmview,jdepablos/insider-trading-feed,jdepablos/clinical-trials-watch,jdepablos/startup-funding-feed,jdepablos/pokemon-card-price-checker,jdepablos/chrono24-watch-analyzer,jdepablos/catawiki-deal-finder,jdepablos/patent-watch,jdepablos/airbnb-market-analyzer,jdepablos/booking-hotel-price-analyzer,jdepablos/samgov-opportunities-feed,jdepablos/sec-13f-holdings-feed,jdepablos/companies-house-feed
gated, needs a credential not listed mcp.apify.com
io.github.JdPG23/market-data-toolkit-mcp
https://mcp.apify.com?tools=jdepablos/ebay-sold-price-appraiser,jdepablos/vinted-search-feed,jdepablos/second-hand-deal-scanner-es,jdepablos/borme-company-feed,jdepablos/spain-boe-auctions,jdepablos/trademark-watch-tmview,jdepablos/insider-trading-feed,jdepablos/clinical-trials-watch,jdepablos/startup-funding-feed,jdepablos/pokemon-card-price-checker,jdepablos/chrono24-watch-analyzer,jdepablos/catawiki-deal-finder,jdepablos/patent-watch,jdepablos/airbnb-market-analyzer,jdepablos/booking-hotel-price-analyzer,jdepablos/samgov-opportunities-feed,jdepablos/sec-13f-holdings-feed,jdepablos/sec-8k-events-feed,jdepablos/companies-house-feed
gated, needs a credential not listed mcp.apify.com
io.github.JerBouma/financetoolkit
https://financetoolkit.jeroenbouma.com/mcp
gated, needs a credential not listed financetoolkit.jeroenbouma.com
io.github.JesseGdotIO/hermes-plant
https://mcp.hermesplant.com/mcp
unreachable not listed mcp.hermesplant.com
io.github.JienWeng/x402-osint
https://x402-osint.tail66f665.ts.net:8443/sse
unreachable not listed x402-osint.tail66f665.ts.net:8443
io.github.Jmpy-me/jmpy-mcp-server
https://jmpy.me/mcp/sse
gated, needs a credential not listed jmpy.me
io.github.Jodes81/brainmop
https://dabblelabs.onrender.com/mcp
gated, needs a credential not listed dabblelabs.onrender.com
io.github.John0n1/chainrpc-mcp
https://chainrpc-mcp.mitander.io/mcp
server error not listed chainrpc-mcp.mitander.io
io.github.Joinware/healthcare-provider-intelligence
https://healthcare-provider-intelligence.onrender.com/mcp/sse
gated, needs a credential not listed healthcare-provider-intelligence.onrender.com
io.github.Jonathanmberg/sirro
https://www.sirro.dev/mcp
gated, needs a credential not listed www.sirro.dev
io.github.Jonnyton/workflow-universe-server
https://tinyassets.io/mcp-directory
404 not listed tinyassets.io
RapidAPI MCP Server
https://mcp.rapidapi.com
answers a handshake not listed mcp.rapidapi.com
io.github.Just-Moh-it/shade
https://mcp.shade.inc/mcp
gated, needs a credential not listed mcp.shade.inc
io.github.JustinBStrong/agent-push-kit
https://api.chatdna.co/agent-push-kit/v1/mcp
gated, needs a credential not listed api.chatdna.co
io.github.K-Cupples/mockmcp
https://mockmcp.io/mcp
404 not listed mockmcp.io
io.github.Kaanthan24/agnigateway-mcp
https://api.agnigateway.com/mcp/v1/public/mcp
answered, not MCP not listed api.agnigateway.com
io.github.Kaeva-labs/unblock
https://mcp.kaeva.app/mcp
gated, needs a credential not listed mcp.kaeva.app
io.github.Kaiserunix/luogu-mcp-server
https://luogu-mcp-server.lantangtang54.workers.dev/mcp
server error not listed luogu-mcp-server.lantangtang54.workers.dev
io.github.Kajdep/countrycallingcodesmcp
https://countrycalling.codes/api/mcp
answered, not MCP not listed countrycalling.codes
io.github.Keiko-Dev-LCAI/orcavault-mcp
https://orcavault-mcp-production.up.railway.app/sse
answered, not MCP not listed orcavault-mcp-production.up.railway.app
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