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.Daniel-Cherny/localplate-mcp
https://iihzbnyxbxhsrexqsori.supabase.co/functions/v1/localplate-mcp
gated, needs a credential not listed iihzbnyxbxhsrexqsori.supabase.co
io.github.DataAssistIO/Dataassist-IO
https://app.dataassist.io/mcp
gated, needs a credential not listed app.dataassist.io
io.github.DavidOrpeli/0xhumans-mcp
https://0xhumans-mcp-proxy.vercel.app/api/mcp
answers a handshake not listed 0xhumans-mcp-proxy.vercel.app
io.github.DealMachine/dealmachine
https://mcp.dealmachine.com
gated, needs a credential not listed mcp.dealmachine.com
io.github.Deep-Identity-Inc/agent-skill
https://mcp.deepidv.com
gated, needs a credential not listed mcp.deepidv.com
io.github.Deep-Identity-Inc/agent-skill
https://mcp.deepidv.com/v1/mcp
gated, needs a credential not listed mcp.deepidv.com
io.github.DevinoSolutions/upapi-mcp
https://app.upapi.io/api/mcp
gated, needs a credential not listed app.upapi.io
io.github.DevsHero/shadow-crawl
https://shadowcrawl--devshero.run.tools
gated, needs a credential not listed shadowcrawl--devshero.run.tools
io.github.DeweyCox369/cave-title
https://cavetitle.xyz/api/mcp
404 not listed cavetitle.xyz
io.github.Dfskid/agent-mcp
https://wattgap.com/api/mcp
JSON-RPC error not listed wattgap.com
io.github.Distribea/distribea-mcp
https://distribea.com/api/mcp/remote
gated, needs a credential not listed distribea.com
io.github.Domirep/the-floor
https://thefloor-dashboard-production.up.railway.app/mcp
404 not listed thefloor-dashboard-production.up.railway.app
io.github.DottedSign-Official/dottedsign-mcp
https://mcp.dottedsign.com/dottedsign-api/mcp
gated, needs a credential not listed mcp.dottedsign.com
io.github.DoughyJoeyD/friday-seller-tools
https://friday-seller-tools-production.up.railway.app/mcp
404 not listed friday-seller-tools-production.up.railway.app
io.github.DunkelCloud/toolmesh
https://{host}:8123/mcp
unreachable not listed {host}:8123
io.github.Dynatrace/dynatrace-for-ai
https://{environment_id}.apps.dynatrace.com/platform-reserved/mcp-gateway/v0.1/servers/dynatrace-mcp/mcp
unreachable not listed {environment_id}.apps.dynatrace.com
io.github.ERROR403agent/deepblue-trading
https://mcp.deepbluebase.xyz/mcp
unreachable not listed mcp.deepbluebase.xyz
io.github.Easy8com/easy8-mcp
https://{easy8_host}/mcp
unreachable not listed {easy8_host}
io.github.Echolonius/token-intel
https://token-intel-x402.echolonius.deno.net/mcp
server error not listed token-intel-x402.echolonius.deno.net
io.github.Edison-Watch/sealgate-mcp
https://mcp.sealgate.ai/mcp/{api_key}/?client={label}
404 not listed mcp.sealgate.ai
io.github.EduBase/MCP
https://www.edubase.net/mcp
gated, needs a credential not listed www.edubase.net
mock-mcp-server
https://kta-oracle.vercel.app/sse
answers a handshake not listed kta-oracle.vercel.app
io.github.Elnora-AI/elnora-mcp-server
https://mcp.elnora.ai/mcp
gated, needs a credential not listed mcp.elnora.ai
io.github.Enigma-52/workway
https://www.workway.dev/api/mcp
gated, needs a credential not listed www.workway.dev
io.github.EquateItAu/classquill-mcp
https://mcp.classquill.com/mcp
gated, needs a credential not listed mcp.classquill.com
io.github.EricSpencer00/instxnt
https://mcp.instxnt.xyz/mcp
answered, not MCP not listed mcp.instxnt.xyz
io.github.ErnestaLabs/forage
https://ernesta-labs--forage.apify.actor/mcp/sse?token={APIFY_API_TOKEN}
gated, needs a credential not listed ernesta-labs--forage.apify.actor
io.github.ErnestaLabs/forage
https://ernesta-labs--forage.apify.actor?token={APIFY_API_TOKEN}
gated, needs a credential not listed ernesta-labs--forage.apify.actor
io.github.EruditeIntelligence/x402-services
https://mcp.eruditepay.com/mcp
unreachable not listed mcp.eruditepay.com
io.github.EruditeIntelligence/x402-services
https://mcp.eruditepay.com/sse
unreachable not listed mcp.eruditepay.com
io.github.Eshller/ltd-mcp
https://api.eshway.com/mcp/
gated, needs a credential not listed api.eshway.com
io.github.Estaite-Solutions/estaite-mcp
https://mcp.estaite.com
gated, needs a credential not listed mcp.estaite.com
io.github.EternaHybridExchange/eterna-mcp
https://mcp.eterna.exchange/mcp
gated, needs a credential not listed mcp.eterna.exchange
EthersFlow
https://www.ethersflow.com/api/mcp
answers a handshake not listed www.ethersflow.com
io.github.EvidInvest/mcp-server
https://mcp.evidinvest.com/mcp
gated, needs a credential not listed mcp.evidinvest.com
io.github.Evozim/3d-meshweaver
https://3d-meshweaver-mcp.vercel.app/api/mcp
JSON-RPC error not listed 3d-meshweaver-mcp.vercel.app
io.github.Evozim/3d-meshweaver-mcp
https://api.m2mcent.com/3d-meshweaver-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/3d-pallet-packing-mcp
https://api.m2mcent.com/3d-pallet-packing-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/4-20ma-analog-converter-mcp
https://api.m2mcent.com/4-20ma-analog-converter-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/5g-core-nfv-mcp
https://api.m2mcent.com/5g-core-nfv-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/90-percent-liquidity-advance-mcp
https://api.m2mcent.com/90-percent-liquidity-advance-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/accounts-receivable-ledger-mcp
https://api.m2mcent.com/accounts-receivable-ledger-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/acoustic-reverb-simulator-mcp
https://api.m2mcent.com/acoustic-reverb-simulator-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/active-seat-metering-mcp
https://api.m2mcent.com/active-seat-metering-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/actuarial-life-table-mcp
https://api.m2mcent.com/actuarial-life-table-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/ad-fraud-click-detector-mcp
https://api.m2mcent.com/ad-fraud-click-detector-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/ad-sniper
https://ad-sniper-mcp.vercel.app/api/mcp
JSON-RPC error not listed ad-sniper-mcp.vercel.app
io.github.Evozim/ad-sniper-mcp
https://api.m2mcent.com/ad-sniper-mcp/sse
answered, not MCP not listed api.m2mcent.com
io.github.Evozim/ad-spend-auditor
https://ad-spend-auditor-mcp.vercel.app/api/mcp
JSON-RPC error not listed ad-spend-auditor-mcp.vercel.app
io.github.Evozim/ad-spend-auditor-mcp
https://api.m2mcent.com/ad-spend-auditor-mcp/sse
answered, not MCP not listed api.m2mcent.com
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