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.alik472/ai-watermark-remover
https://aiwatermarkremover.com/mcp
gated, needs a credential not listed aiwatermarkremover.com
io.github.alimbenhelal-pro/alm-xpp-mcp
https://www.almxpp.com/mcp
JSON-RPC error not listed www.almxpp.com
io.github.aliomraniH/mcp-assist-memory
https://mcp-assist-memory.replit.app/mcp
gated, needs a credential not listed mcp-assist-memory.replit.app
io.github.allamiwayl-27/rabatrealestate-mcp
https://realestatecapitale.ma/mcp
server error not listed realestatecapitale.ma
io.github.almostjacked/hevy-mcp
https://hevy-coach.ajwallacemusic.workers.dev/mcp
gated, needs a credential not listed hevy-coach.ajwallacemusic.workers.dev
io.github.alphasophia/alpha-sophia
https://api.alphasophia.com/v1/mcp
gated, needs a credential not listed api.alphasophia.com
io.github.alphavantage/alpha_vantage_mcp
https://mcp.alphavantage.co/mcp
gated, needs a credential not listed mcp.alphavantage.co
io.github.alpineflow-io/swiss-whale-intelligence
https://mcp.btcwhalealerts.com/mcp
gated, needs a credential not listed mcp.btcwhalealerts.com
io.github.alpineflow-io/swiss-whale-intelligence
https://mcp.swisswhaleintelligence.com/mcp
gated, needs a credential not listed mcp.swisswhaleintelligence.com
io.github.alright-alright/konstruct
https://konstruct-api.aerynw.workers.dev/mcp
gated, needs a credential not listed konstruct-api.aerynw.workers.dev
io.github.alright-alright/konstruct
https://konstruct.aerware.ai/mcp
gated, needs a credential not listed konstruct.aerware.ai
io.github.alright-alright/persis
https://persis-api.aerynw.workers.dev/mcp
gated, needs a credential not listed persis-api.aerynw.workers.dev
io.github.alright-alright/persis
https://persis.aerware.ai/mcp
gated, needs a credential not listed persis.aerware.ai
io.github.alvseek/munnin
https://munnin.lok.quest/mcp
gated, needs a credential not listed munnin.lok.quest
io.github.ama353-arch/journi-travel
https://web-production-44f93.up.railway.app/mcp
gated, needs a credential not listed web-production-44f93.up.railway.app
io.github.ameinnaqvi/travelowl-mcp
https://mcp.travel-owl.co.uk/mcp
gated, needs a credential not listed mcp.travel-owl.co.uk
io.github.amit755/4fetch
https://api.4fetch.com/mcp/v1/fetch
unreachable not listed api.4fetch.com
io.github.amkentech/agent-channel
https://channel.amkentech.com/mcp
gated, needs a credential not listed channel.amkentech.com
io.github.amruthpillai/reactive-resume
https://rxresu.me/mcp
gated, needs a credential not listed rxresu.me
io.github.anderseen-digital/shop-mcp
https://www.shopmcp.net/mcp-shopify.ashx
gated, needs a credential not listed www.shopmcp.net
io.github.andreabuttarelli/anomalia
https://mcp.anomalia.so/mcp
gated, needs a credential not listed mcp.anomalia.so
io.github.andretheronsa/satmcp
https://satmcp.com/mcp/
gated, needs a credential not listed satmcp.com
io.github.andrewdraper/uxsense-drift
https://app.uxsense.ai/api/mcp
gated, needs a credential not listed app.uxsense.ai
io.github.andreysparish/toolweave
https://toolweave.dev/mcp
gated, needs a credential not listed toolweave.dev
io.github.andysalvo/agentic-platform
https://api.asalvocreative.com/mcp
unreachable not listed api.asalvocreative.com
io.github.andysalvo/agentic-platform
https://platform.crestsystems.ai/mcp
unreachable not listed platform.crestsystems.ai
io.github.aneduaim/untap-mcp
https://untap.money/api/mcp
gated, needs a credential not listed untap.money
io.github.angelo-leone/talent-augmenting-layer
https://proworker-hosted.onrender.com/mcp
gated, needs a credential not listed proworker-hosted.onrender.com
io.github.angelus213/foundry-api
https://prodapi.live/mcp
gated, needs a credential not listed prodapi.live
io.github.aniebyl/ololand-dd
https://ma-workbench-api-303576587005.us-central1.run.app/mcp
gated, needs a credential not listed ma-workbench-api-303576587005.us-central1.run.app
io.github.anima-labs-ai/anima
https://mcp.useanima.sh/mcp
gated, needs a credential not listed mcp.useanima.sh
io.github.antonioac1/courier
https://getcourier.dev
answered, not MCP not listed getcourier.dev
io.github.anuragind003/ad-extract
https://mcp.adextract.co/mcp
gated, needs a credential not listed mcp.adextract.co
io.github.anymailfinder/mcp-server
https://api.anymailfinder.com/mcp
gated, needs a credential not listed api.anymailfinder.com
io.github.apaleo/mcp-server
https://mcp.apaleo.com/mcp
gated, needs a credential not listed mcp.apaleo.com
io.github.apatzer/vital-care-finder
https://mcp.vital.io/
gated, needs a credential not listed mcp.vital.io
io.github.apifymcpfactory-droid/eu-vat-validator
https://mcp.apify.com?tools=apifmcpfactory/eu-vat-validator
gated, needs a credential not listed mcp.apify.com
io.github.apifymcpfactory-droid/llms-txt-checker
https://mcp.apify.com?tools=apifmcpfactory/llms-txt-checker
gated, needs a credential not listed mcp.apify.com
io.github.apifymcpfactory-droid/tech-stack-detector
https://mcp.apify.com?tools=apifmcpfactory/tech-stack-detector
gated, needs a credential not listed mcp.apify.com
io.github.apiiro/guardian-agent
https://mcp.apiiro.com/mcp
gated, needs a credential not listed mcp.apiiro.com
io.github.apolloio/apollo-mcp
https://mcp.apollo.io/mcp
gated, needs a credential not listed mcp.apollo.io
io.github.appwrite/mcp
https://mcp.appwrite.io/
gated, needs a credential not listed mcp.appwrite.io
io.github.appwrite/mcp
https://mcp.appwrite.io/mcp
gated, needs a credential not listed mcp.appwrite.io
io.github.apurv101/memory-vault
https://memoryvault.click/mcp
gated, needs a credential not listed memoryvault.click
io.github.aramai-schematica/coremodels
https://go.coremodels.io/mcp-admin
gated, needs a credential not listed go.coremodels.io
io.github.araujota/arcagent-mcp
https://mcp.arcagent.dev/mcp
unreachable not listed mcp.arcagent.dev
io.github.arcar-org/n8n-mcp-server
https://nave.q2bot.com/mcp/arcar.org
404 not listed nave.q2bot.com
io.github.archievi/climbpast
https://climbpast.com/api/mcp
gated, needs a credential not listed climbpast.com
io.github.architagrawal/prismsplit
https://www.prismsplit.tech/mcp
gated, needs a credential not listed www.prismsplit.tech
io.github.arcmira/arcmira
https://mcp.arcmira.com/mcp
gated, needs a credential not listed mcp.arcmira.com
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