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.
| server | result | tools | host |
|---|---|---|---|
| ai.refd/refd
https://refd.ai/api/mcp |
answered, not MCP | not listed | refd.ai |
| ai.refd/refd
https://api.refd.ai/mcp |
gated, needs a credential | not listed | api.refd.ai |
| ai.responsibleailabs/rail-score
https://mcp.responsibleailabs.ai/mcp |
unreachable | not listed | mcp.responsibleailabs.ai |
| ai.resumax/resumax
https://resumax.ai/api/mcp |
gated, needs a credential | not listed | resumax.ai |
| ai.rfp/rfp-ai
https://rfp.ai/api/mcp |
gated, needs a credential | not listed | rfp.ai |
| ai.rise2/figlime
https://figlime.rise2.ai/mcp |
answered, not MCP | not listed | figlime.rise2.ai |
| ai.rise2/figlime
https://app.rise2.ai/mcp |
gated, needs a credential | not listed | app.rise2.ai |
| ai.robosystems/robosystems
https://api.robosystems.ai/v1/mcp |
gated, needs a credential | not listed | api.robosystems.ai |
| ai.robutler/robutler
https://robutler.ai/mcp |
gated, needs a credential | not listed | robutler.ai |
| ai.roc/mcp
https://mcp.roc.ai/mcp |
unreachable | not listed | mcp.roc.ai |
| ai.roic/roic
https://mcp.roic.ai/mcp |
gated, needs a credential | not listed | mcp.roic.ai |
| ai.rootdata/public-directory
https://rootdata.ai/api/mcp |
unreachable | not listed | rootdata.ai |
| ai.roryplans/roryplans
https://www.roryplans.ai/api/mcp |
gated, needs a credential | not listed | www.roryplans.ai |
| ai.rosterresolve/roster
https://{roster_host}/mcp |
unreachable | not listed | {roster_host} |
| ai.routing24/mcp
https://routing24.ai/mcp |
gated, needs a credential | not listed | routing24.ai |
| ai.saifs/customer-intelligence
https://customer-tiering-mcp.saifs.ai/mcp |
gated, needs a credential | not listed | customer-tiering-mcp.saifs.ai |
| ai.saifs/customer-intelligence
https://customer-tiering-mcp-latest.saifs.ai/mcp |
gated, needs a credential | not listed | customer-tiering-mcp-latest.saifs.ai |
| ai.saifs/demand-forecasting
https://demand-forecaster-mcp.saifs.ai/mcp |
gated, needs a credential | not listed | demand-forecaster-mcp.saifs.ai |
| ai.saifs/indian-railways-irctc
https://transport-agent-claude.saifs.ai/mcp |
gated, needs a credential | not listed | transport-agent-claude.saifs.ai |
| ai.saifs/inventory-intelligence-optimizer
https://inventory-optimizer-mcp.saifs.ai/mcp |
gated, needs a credential | not listed | inventory-optimizer-mcp.saifs.ai |
| ai.saifs/lead-intelligence
https://lead-scoring-mcp.saifs.ai/mcp |
gated, needs a credential | not listed | lead-scoring-mcp.saifs.ai |
| ai.saifs/marketing-intelligence
https://marketing-analysis-mcp.saifs.ai/mcp |
gated, needs a credential | not listed | marketing-analysis-mcp.saifs.ai |
| ai.saifs/media-generator-images-videos
https://mcp.saifs.ai/mcp |
gated, needs a credential | not listed | mcp.saifs.ai |
| ai.saifs/synthetic-data-random-user
https://synthetic-mint-mcp.saifs.ai/mcp |
gated, needs a credential | not listed | synthetic-mint-mcp.saifs.ai |
| ai.saltybytes/recipes
https://api.saltybytes.ai/mcp |
gated, needs a credential | not listed | api.saltybytes.ai |
| ai.scamverify/mcp
https://scamverify.ai/api/mcp |
unreachable | not listed | scamverify.ai |
| scoreia-server
https://scoreia.ai/mcp |
answers a handshake | not listed | scoreia.ai |
| scoreia-server
https://scoreia.ai/open-labyrinth/mcp |
answers a handshake | not listed | scoreia.ai |
| ai.sealgate/gateway
https://mcp.sealgate.ai/mcp |
gated, needs a credential | not listed | mcp.sealgate.ai |
| ai.seaotter/otterscore
https://mcp.seaotter.ai/mcp |
gated, needs a credential | not listed | mcp.seaotter.ai |
| ai.searchconsole/searchconsole-ai
https://searchconsole.ai/mcp |
gated, needs a credential | not listed | searchconsole.ai |
| ai.searcheros/searcher-os
https://searcheros.ai/api/mcp |
404 | not listed | searcheros.ai |
| ai.searcheros/searcher-os
https://searcheros.ai/api/mcp/mcp |
gated, needs a credential | not listed | searcheros.ai |
| ai.secapi/secapi
https://api.secapi.ai/mcp |
gated, needs a credential | not listed | api.secapi.ai |
| ai.seendb/seendb
https://api.seendb.ai/mcp |
gated, needs a credential | not listed | api.seendb.ai |
| ai.seldons/korea-business-trade
https://mcp.seldons.ai/mcp |
JSON-RPC error | not listed | mcp.seldons.ai |
| ai.sellermate/amazon-ads
https://api.sellermate.ai/mcp/sse |
gated, needs a credential | not listed | api.sellermate.ai |
| ai.seltz/seltz-ai-seltz-mcp
https://mcp.seltz.ai/mcp |
gated, needs a credential | not listed | mcp.seltz.ai |
| ai.sendfast/sendfast
https://sendfast.ai/api/mcp |
gated, needs a credential | not listed | sendfast.ai |
| ai.sendinel/mcp-server
https://sendinel.ai/mcp |
gated, needs a credential | not listed | sendinel.ai |
| ai.sentisense/market-intelligence
https://app.sentisense.ai/mcp |
gated, needs a credential | not listed | app.sentisense.ai |
| ai.seocrawl/mcp
https://mcp.seocrawl.ai |
gated, needs a credential | not listed | mcp.seocrawl.ai |
| ai.seomatic/seomatic
https://app.seomatic.ai/api/mcp |
gated, needs a credential | not listed | app.seomatic.ai |
| ai.serff/ca-rate-filings
https://api.serff.ai/mcp |
unreachable | not listed | api.serff.ai |
| ai.sessionkeeper/mcp
https://api.sessionkeeper.ai/mcp |
gated, needs a credential | not listed | api.sessionkeeper.ai |
| ai.sharewatch/sharewatch
https://sharewatch.ai/mcp |
gated, needs a credential | not listed | sharewatch.ai |
| ai.shawndurrani/mcp-merchant
https://mcp.shawndurrani.ai/sse |
404 | not listed | mcp.shawndurrani.ai |
| ai.shawndurrani/mcp-registry
https://mcp-registry.shawndurrani.ai/sse |
404 | not listed | mcp-registry.shawndurrani.ai |
| ai.shipstar/mcp
https://mcp.shipstar.ai/mcp |
gated, needs a credential | not listed | mcp.shipstar.ai |
| ai.sig.foodlog/food-logger
https://foodlog.sig.ai/api/mcp |
gated, needs a credential | not listed | foodlog.sig.ai |