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.Wxt-ai/workspace-note-path-workbench
https://withdrawal-scales-newport-gordon.trycloudflare.com/mcp/workspace-note-path/downstream
unreachable not listed withdrawal-scales-newport-gordon.trycloudflare.com
io.github.Wxt-ai/workspace-note-path-workbench
https://antibody-package-occasional-floppy.trycloudflare.com/mcp/workspace-note-path/downstream
unreachable not listed antibody-package-occasional-floppy.trycloudflare.com
io.github.Xavierfok/singapore-proxy-mcp
https://mcp.singaporemobileproxy.com/mcp
unreachable not listed mcp.singaporemobileproxy.com
io.github.XianDAO-Labs/huangting-flux
https://web-production-c3cf.up.railway.app/mcp
404 not listed web-production-c3cf.up.railway.app
io.github.XianDAO-Labs/huangting-flux
https://mcp.huangting.ai/mcp
404 not listed mcp.huangting.ai
io.github.Xyz3R/svgapp
https://web.svgapp.ai/mcp
gated, needs a credential not listed web.svgapp.ai
io.github.YG3-ai/yg3-mcp
https://mcp.yg3.ai/mcp
gated, needs a credential not listed mcp.yg3.ai
io.github.Yersat/chatflow
https://valuable-sockeye-14.eu-west-1.convex.site/mcp
gated, needs a credential not listed valuable-sockeye-14.eu-west-1.convex.site
io.github.YokuApp/mcp-server
https://mcp.yoku.app
unreachable not listed mcp.yoku.app
io.github.YonGs-AI/leor-ai-booth-design-agent
https://leor.cn/agent-test/mcp
gated, needs a credential not listed leor.cn
io.github.YonGs-AI/leor-ai-booth-design-agent
https://mcp.leor.cn/mcp
gated, needs a credential not listed mcp.leor.cn
io.github.Yoodaekyung/atomic-css
https://atomiccss.dev/mcp
answered, not MCP not listed atomiccss.dev
io.github.ZachLaik/legal-data-hunter
https://legaldatahunter.com/mcp
gated, needs a credential not listed legaldatahunter.com
io.github.Zarklab-AI/zark-media
https://api.zarklab.ai/v1/mcp
gated, needs a credential not listed api.zarklab.ai
io.github.ZenRows/zenrows-mcp
https://mcp.zenrows.com/mcp
gated, needs a credential not listed mcp.zenrows.com
io.github.Zero-nium/project-substitute-arena
https://zero-wispy-shadow-3951.fly.dev/mcp
answered, not MCP not listed zero-wispy-shadow-3951.fly.dev
io.github.ZiggsAI/ziggs
https://mcp.ziggsai.com/mcp
gated, needs a credential not listed mcp.ziggsai.com
io.github.Zoominfo/zoominfo-mcp
https://mcp.zoominfo.com/mcp
gated, needs a credential not listed mcp.zoominfo.com
io.github.Zuga-luga/Zugabot
https://brain.zugabot.ai/mcp
bad request not listed brain.zugabot.ai
io.github.a-mashiro-art/jp-data
https://jp-data-api-production.up.railway.app/mcp
404 not listed jp-data-api-production.up.railway.app
io.github.a0985344368-glitch/tsung-ai
https://tsung-mcp-custom.a0985344368.workers.dev/mcp
gated, needs a credential not listed tsung-mcp-custom.a0985344368.workers.dev
io.github.aa0101181514/tw-legal-rag
https://tlr.dr-lawbot.com/mcp
gated, needs a credential not listed tlr.dr-lawbot.com
io.github.aa0101181514/tw-legal-rag
https://tlr.dr-legal.com.tw/mcp
gated, needs a credential not listed tlr.dr-legal.com.tw
io.github.aardappvark/gridscoot
https://gridscoot.vercel.app/api/mcp
404 not listed gridscoot.vercel.app
io.github.aataqi-boop/siliconbridge
https://siliconbridge.xyz/mcp
unreachable not listed siliconbridge.xyz
io.github.aatharva16/dalalos
https://mcp.dalalos.in/mcp
gated, needs a credential not listed mcp.dalalos.in
io.github.abdulrahimiqbal/dreamthreads
https://mydreamthreads.xyz/mcp
unreachable not listed mydreamthreads.xyz
io.github.abenassi/argentina-data
https://argentinadata.mymcps.dev/mcp
gated, needs a credential not listed argentinadata.mymcps.dev
io.github.abhijitjavelin/javelin-guardrails-mcp-server
https://abhijitjavelin.github.io/javelin-guardrails-mcp-server/mcp
answered, not MCP not listed abhijitjavelin.github.io
io.github.abhinavala/context-cloud
https://api.contextcloud.pro/mcp/protocol
gated, needs a credential not listed api.contextcloud.pro
io.github.abm-dev-git/abm-mcp
https://mcp.abm.dev/mcp
gated, needs a credential not listed mcp.abm.dev
io.github.absharma9796/pixel-agent
https://pixel-agent.for-ai-agents.workers.dev/mcp
answered, not MCP not listed pixel-agent.for-ai-agents.workers.dev
io.github.absharma9796/pixel-agent
https://pixel-agent.for-ai-agents.workers.dev/mcp/official-registry
answered, not MCP not listed pixel-agent.for-ai-agents.workers.dev
io.github.acarchidi/agentforge
https://agentforge-taupe.vercel.app/mcp
server error not listed agentforge-taupe.vercel.app
io.github.acee-ventures/china-policy-signal
https://policy-signal.onrender.com/mcp
server error not listed policy-signal.onrender.com
io.github.achilliesbot/delphi-oracle
https://delphi-oracle.onrender.com/mcp
404 not listed delphi-oracle.onrender.com
io.github.achilliesbot/ep-agentiam
https://achillesalpha.onrender.com/mcp
404 not listed achillesalpha.onrender.com
io.github.acrylicfiddle/x402tools
https://mcp.x402tools.xyz/mcp
unreachable not listed mcp.x402tools.xyz
io.github.adakov589/judikatura-mcp
https://api.lexvector.eu/mcp
gated, needs a credential not listed api.lexvector.eu
io.github.adam-messinger/cashflow
https://cashflow.tech/api/mcp
gated, needs a credential not listed cashflow.tech
io.github.adamgusky/mintqa-mcp
https://mintqa.dev/mcp
gated, needs a credential not listed mintqa.dev
io.github.adicted07-lang/meridian-consensus
https://www.meridianconsensus.com/api/mcp
JSON-RPC error not listed www.meridianconsensus.com
io.github.aditya201551/context-book-mcp
https://context-book-mcp-production.up.railway.app
404 not listed context-book-mcp-production.up.railway.app
io.github.adkit/ads
https://mcp.adkit.so
gated, needs a credential not listed mcp.adkit.so
io.github.admin-rstechie/leporis-mcp
https://leporis.mcp.rstechie.in/mcp
gated, needs a credential not listed leporis.mcp.rstechie.in
io.github.adwiteeymauriya/ibkr-portfolio-builder-mcp
https://{ibkr_mcp_host}/mcp
unreachable not listed {ibkr_mcp_host}
io.github.aemery13/polymarket-intel
https://polymarket-intel-production.up.railway.app/mcp
answered, not MCP not listed polymarket-intel-production.up.railway.app
io.github.aeoess/agent-passport-mcp
https://mcp.aeoess.com/sse
404 not listed mcp.aeoess.com
io.github.aezizhu/model-id-cheatsheet
https://universal-model-registry-production.up.railway.app/sse
404 not listed universal-model-registry-production.up.railway.app
io.github.afanasenkoa/instagram-profile-mcp-server
https://afanasenko--instagram-profile-scraper-mcp-server.apify.actor/mcp
gated, needs a credential not listed afanasenko--instagram-profile-scraper-mcp-server.apify.actor
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