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.afanasenkoa/zillow-mcp-server
https://afanasenko--zillow-mcp-server.apify.actor/mcp
gated, needs a credential not listed afanasenko--zillow-mcp-server.apify.actor
io.github.affset/mcp
https://mcp.affset.com/mcp
gated, needs a credential not listed mcp.affset.com
io.github.afrazja/poshkan
https://www.poshkan.com/api/mcp/mcp
gated, needs a credential not listed www.poshkan.com
io.github.agencyenterprise/fathom-mcp-server
https://fathom-mcp-server.com/mcp
gated, needs a credential not listed fathom-mcp-server.com
agentlux
https://api.agentlux.ai/v1/mcp/jsonrpc
answers a handshake not listed api.agentlux.ai
io.github.agentndx/agentindex
https://agentndx-production.up.railway.app
404 not listed agentndx-production.up.railway.app
io.github.agnicpay-prog/agnicpay
https://mcp.agnic.ai/sse
gated, needs a credential not listed mcp.agnic.ai
io.github.agnicpay-prog/agnicpay
https://mcp.agnic.ai/deprecated
404 not listed mcp.agnic.ai
io.github.ahmadsl/chartpane
https://mcp.chartpane.com/mcp
gated, needs a credential not listed mcp.chartpane.com
io.github.ahmadsl/kachink
https://kachink.ahmadsl.workers.dev/mcp
unreachable not listed kachink.ahmadsl.workers.dev
io.github.ahmadsl/kachink
https://kachink.app/mcp
gated, needs a credential not listed kachink.app
io.github.ahmedEid1/thoth
https://thoth-slr.vercel.app/api/mcp/mcp
gated, needs a credential not listed thoth-slr.vercel.app
io.github.ahmedvnabil/egypt-research
https://erx-mcp.zad.tools/mcp
server error not listed erx-mcp.zad.tools
io.github.ahutto87/parsel
https://tt6a1STd9c1tiDzXW.apify.actor/mcp
gated, needs a credential not listed tt6a1STd9c1tiDzXW.apify.actor
io.github.ai-gaoqian/agentmart
https://api.ai-gaoqian.xyz/mcp
unreachable not listed api.ai-gaoqian.xyz
io.github.ai-needl/askneedl
https://mcp.needl.ai/mcp
gated, needs a credential not listed mcp.needl.ai
io.github.aihumin/pagent
https://app.pagent.ai/api/mcp
gated, needs a credential not listed app.pagent.ai
io.github.aimnis/search
https://aimnis.com/mcp
404 not listed aimnis.com
io.github.aion-autonomous-org/edgar-answers-mcp
https://aion-org--edgar-answers-mcp.apify.actor/mcp
gated, needs a credential not listed aion-org--edgar-answers-mcp.apify.actor
io.github.airbytehq/agents
https://mcp.airbyte.ai/mcp
gated, needs a credential not listed mcp.airbyte.ai
io.github.airweave-ai/search
https://mcp.airweave.ai/mcp
gated, needs a credential not listed mcp.airweave.ai
io.github.aistatusdashboard/aistatusdashboard
https://aistatusdashboard.com/mcp
answered, not MCP not listed aistatusdashboard.com
io.github.ajaxhe/lexiang-mcp-server
https://mcp.lexiang-app.com/mcp?company_from={company_code}
gated, needs a credential not listed mcp.lexiang-app.com
io.github.ajaxhe/lexiang-mcp-server
https://mcp.lexiang-app.com/mcp/deprecated?company_from={company_code}
404 not listed mcp.lexiang-app.com
io.github.ajaxhe/lexiang-mcp-server
https://mcp.lexiang-app.com/ajaxhe-deprecated?company_from={company_code}
404 not listed mcp.lexiang-app.com
io.github.ajekalemile/arcstream-agent-market
https://arcstream-api-production.up.railway.app/mcp
JSON-RPC error not listed arcstream-api-production.up.railway.app
io.github.ajprolific/waqi
https://waqi.bilazann.com/api/mcp/{token}
gated, needs a credential not listed waqi.bilazann.com
io.github.ajrogier/aiqaramba
https://app.aiqaramba.com/mcp
answered, not MCP not listed app.aiqaramba.com
io.github.ajrogier/aiqaramba
https://mcp.aiqaramba.com/mcp
unreachable not listed mcp.aiqaramba.com
io.github.aks129/healthclaw-guardrails
https://mcp-server-production-5112.up.railway.app/mcp
gated, needs a credential not listed mcp-server-production-5112.up.railway.app
io.github.aksp200/useful-utilities
https://mcp.usefulutils.in/sse
bad request not listed mcp.usefulutils.in
io.github.aksp200/useful-utilities
https://mcp.usefulutils.in/mcp
gated, needs a credential not listed mcp.usefulutils.in
io.github.akutishevsky/nutrition-mcp
https://nutrition-mcp.com/mcp
gated, needs a credential not listed nutrition-mcp.com
io.github.akutishevsky/spotify
https://sptfy-mcp.online/mcp
unreachable not listed sptfy-mcp.online
io.github.akutishevsky/withings
https://withings-mcp.com/mcp
gated, needs a credential not listed withings-mcp.com
io.github.albermm/catholic-greatness
https://cg.phos.nz/mcp/
404 not listed cg.phos.nz
io.github.albermm/incomebot
https://ib.phos.nz/mcp/
server error not listed ib.phos.nz
io.github.albermm/phos-analytics-engine
https://ae.phos.nz/mcp/
server error not listed ae.phos.nz
io.github.albermm/phos-marketing-engine
https://me.phos.nz/mcp/
server error not listed me.phos.nz
io.github.albermm/phos-sales-engine
https://se.phos.nz/mcp/
server error not listed se.phos.nz
io.github.albermm/piranha-vision
https://pi.phos.nz/mcp/
server error not listed pi.phos.nz
io.github.alex-odoo/myfinance-mcp
https://myfinance-mcp.com/mcp
gated, needs a credential not listed myfinance-mcp.com
io.github.alexar76/aimarket-mcp
https://{aimarket_host}/mcp
unreachable not listed {aimarket_host}
io.github.alexcurpan-cloud/neuralbrain
https://neuralbrain.ai/mcp
answered, not MCP not listed neuralbrain.ai
io.github.alexfengrui/gq-readiness-free
https://gq.051297.com/mcp
gated, needs a credential not listed gq.051297.com
io.github.algolia/algolia-productivity
https://mcp.algolia.com/mcp
gated, needs a credential not listed mcp.algolia.com
io.github.alibaizhanov/mengram
https://mengram.io/mcp
gated, needs a credential not listed mengram.io
io.github.aliceappai/mcp-server-alice
https://aliceapp.ai/mcp/{api_key}
gated, needs a credential not listed aliceapp.ai
io.github.alifanov/scopegate
https://mcp.scopegate.cloud/{api_key}
unreachable not listed mcp.scopegate.cloud
io.github.alifanov/scopegate
https://scopegate.dev/api/mcp/{api_key}
gated, needs a credential not listed scopegate.dev
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