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 |
|---|---|---|---|
| io.github.rhoneybul/etapa-mcp
https://etapa-mcp-production.up.railway.app/mcp |
server error | not listed | etapa-mcp-production.up.railway.app |
| io.github.ricdanyalgil/blueauth-document-signing
https://blueauth.co/api/mcp-server/mcp |
gated, needs a credential | not listed | blueauth.co |
| io.github.richardtkemp/theothers
https://theothers.richardkemp.uk/mcp |
404 | not listed | theothers.richardkemp.uk |
| io.github.richbile/obsidian-regulatory-mcp
https://mcp.obsidianri.com/mcp |
gated, needs a credential | not listed | mcp.obsidianri.com |
| io.github.rishabhmpc/prompt-compass
https://api.mpcfintech.com/mcp |
gated, needs a credential | not listed | api.mpcfintech.com |
| io.github.rjandino/zopaf
https://zopaf-mcp-production.up.railway.app/mcp |
unreachable | not listed | zopaf-mcp-production.up.railway.app |
| io.github.rmzlb/notifyd
https://{notifyd_host}/mcp |
unreachable | not listed | {notifyd_host} |
| io.github.rodrgds/openpost
https://app.openpost.social/mcp |
answered, not MCP | not listed | app.openpost.social |
| io.github.rodrgds/openpost
https://app.openpo.st/mcp |
gated, needs a credential | not listed | app.openpo.st |
| io.github.rohitcodilya/fixzi-mcp
https://fixzi.ai/api/mcp |
gated, needs a credential | not listed | fixzi.ai |
| io.github.rok-labs/wolfpack-intelligence
https://wolfpack-production.up.railway.app/api/v1/mcp |
404 | not listed | wolfpack-production.up.railway.app |
| io.github.rok-labs/wolfpack-intelligence
https://api.wolfpack.roklabs.dev/api/v1/mcp |
404 | not listed | api.wolfpack.roklabs.dev |
| io.github.rolocache/agent-advisories
https://www.rolocache.com/mcp/sse |
404 | not listed | www.rolocache.com |
| io.github.romcdonald9976/chikoh
https://chikoh.com/mcp |
gated, needs a credential | not listed | chikoh.com |
| io.github.romcdonald9976/chikoh
https://chikoh.com/sse |
404 | not listed | chikoh.com |
| io.github.romulusfoundry/grantsonar
https://grantsonar.com/api/mcp |
gated, needs a credential | not listed | grantsonar.com |
| io.github.ronrey/portal
https://mcp.comos-portal.com/mcp/sse |
unreachable | not listed | mcp.comos-portal.com |
| io.github.rootsbymenda/cannabis-regulatory
https://cannabis-mcp-server.rootsbybenda.workers.dev/mcp |
404 | not listed | cannabis-mcp-server.rootsbybenda.workers.dev |
| io.github.rootsbymenda/cannabis-regulatory
https://cannabis-mcp-server.rootsbybenda.workers.dev/sse |
404 | not listed | cannabis-mcp-server.rootsbybenda.workers.dev |
| io.github.rootsbymenda/chemical-safety
https://chem-mcp-server.rootsbybenda.workers.dev/mcp |
404 | not listed | chem-mcp-server.rootsbybenda.workers.dev |
| io.github.rootsbymenda/chemical-safety
https://chem-mcp-server.rootsbybenda.workers.dev/sse |
404 | not listed | chem-mcp-server.rootsbybenda.workers.dev |
| io.github.rootsbymenda/cosmetic-regulatory
https://roots-mcp-server.rootsbybenda.workers.dev/mcp |
404 | not listed | roots-mcp-server.rootsbybenda.workers.dev |
| io.github.rootsbymenda/cosmetic-regulatory
https://roots-mcp-server.rootsbybenda.workers.dev/sse |
404 | not listed | roots-mcp-server.rootsbybenda.workers.dev |
| io.github.rootsbymenda/food-safety
https://food-mcp-server.rootsbybenda.workers.dev/mcp |
404 | not listed | food-mcp-server.rootsbybenda.workers.dev |
| io.github.rootsbymenda/food-safety
https://food-mcp-server.rootsbybenda.workers.dev/sse |
404 | not listed | food-mcp-server.rootsbybenda.workers.dev |
| io.github.rootsbymenda/pharma-regulatory
https://pharma-mcp-server.rootsbybenda.workers.dev/mcp |
404 | not listed | pharma-mcp-server.rootsbybenda.workers.dev |
| io.github.rootsbymenda/pharma-regulatory
https://pharma-mcp-server.rootsbybenda.workers.dev/sse |
404 | not listed | pharma-mcp-server.rootsbybenda.workers.dev |
| io.github.rozetyp/vuln-intel
https://mcp.rozetyp.com/mcp |
gated, needs a credential | not listed | mcp.rozetyp.com |
| io.github.rplryan/x402-discovery-mcp
https://x402-discovery-api.onrender.com/mcp |
server error | not listed | x402-discovery-api.onrender.com |
| io.github.rplryan/x402-discovery-mcp
https://x402-scout-relay.onrender.com/sse |
server error | not listed | x402-scout-relay.onrender.com |
| io.github.rubix1138/askew-x402
https://mcp.askew.network/mcp |
unreachable | not listed | mcp.askew.network |
| io.github.rudedoggg/ace-memory
https://ais.agentsandswarms.ai/mcp |
gated, needs a credential | not listed | ais.agentsandswarms.ai |
| io.github.runapi-builder/runapi-mcp
https://mcp.runapi.ai/mcp |
gated, needs a credential | not listed | mcp.runapi.ai |
| io.github.runcomfy-com/runcomfy-mcp
https://mcp.runcomfy.com/mcp |
gated, needs a credential | not listed | mcp.runcomfy.com |
| io.github.runonproof/cdo
https://cdo-production.up.railway.app/v1/agent/mcp |
JSON-RPC error | not listed | cdo-production.up.railway.app |
| io.github.runonproof/cdo
https://api.runonproof.com/v1/agent/mcp |
JSON-RPC error | not listed | api.runonproof.com |
| io.github.runrelay/mcp-relay
https://mcp.runrelay.io/sse |
404 | not listed | mcp.runrelay.io |
| io.github.russellshen1992/2o
https://www.2oapi.xyz/api/mcp |
gated, needs a credential | not listed | www.2oapi.xyz |
| io.github.rvmey/triggercmd
https://www.triggercmd.com/mcp |
gated, needs a credential | not listed | www.triggercmd.com |
| io.github.ryansilk/apexvol-mcp
https://apexvol.com/mcp-server |
gated, needs a credential | not listed | apexvol.com |
| io.github.ryanzambrano/pixero
https://pixero.ai/api/mcp |
gated, needs a credential | not listed | pixero.ai |
| io.github.ryss30/orcool-studio
https://mcp.orcool.com |
gated, needs a credential | not listed | mcp.orcool.com |
| io.github.ryuamarines/url-normalizer
https://faceted-napped-debtless.ngrok-free.dev/mcp |
404 | not listed | faceted-napped-debtless.ngrok-free.dev |
| io.github.s2bomb/living-docs
https://living-docs-workspace.vercel.app/mcp |
gated, needs a credential | not listed | living-docs-workspace.vercel.app |
| DialogBrain MCP
https://api.dialogbrain.com/mcp |
answers a handshake | not listed | api.dialogbrain.com |
| io.github.samson-art/transcriptor-mcp
https://gateway.mcpal.io/mcp/transcriptor |
404 | not listed | gateway.mcpal.io |
| io.github.samson-art/transcriptor-mcp
https://transcriptor.gateway.mcpal.io/mcp |
gated, needs a credential | not listed | transcriptor.gateway.mcpal.io |
| io.github.samymassoud/macadress
https://mcp.macadress.com/mcp |
gated, needs a credential | not listed | mcp.macadress.com |
| io.github.sandbaseai/cli
https://sandbase.ai/v1/mcp |
gated, needs a credential | not listed | sandbase.ai |
| io.github.sandeep1995/form2web
https://slatehut.com/api/mcp |
gated, needs a credential | not listed | slatehut.com |