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.bitrix24/bitrix24
https://mcp.bitrix24.com/mcp/
gated, needs a credential not listed mcp.bitrix24.com
io.github.bitsandtea/postking-mcp
https://mcp.postking.app/mcp
gated, needs a credential not listed mcp.postking.app
io.github.biznetai/biznetai-mcp
https://biznetaimcp.consumergenie.net/mcp
gated, needs a credential not listed biznetaimcp.consumergenie.net
io.github.black-forest-labs/flux-mcp
https://mcp.bfl.ai
gated, needs a credential not listed mcp.bfl.ai
io.github.blackcow4234-lab/artifactguard
https://analytical-gratefulne--artifactguard.apify.actor/mcp
gated, needs a credential not listed analytical-gratefulne--artifactguard.apify.actor
io.github.blakeyounger/cortexassay
https://cortexassay.up.railway.app/mcp
gated, needs a credential not listed cortexassay.up.railway.app
io.github.blakeyounger/cortexassay
https://cortexassay.com/mcp
answered, not MCP not listed cortexassay.com
io.github.blathrop07/voyager-commerce
https://review-002-voyager-ai-commerce.zeus.gatewayticketing.hosting/mcp?storefrontId=9e55112e-b1c9-4f8f-8531-e9aed2158066
404 not listed review-002-voyager-ai-commerce.zeus.gatewayticketing.hosting
io.github.bluemagma-compliance/nohumansshop
https://nohumans.shop/api/mcp
gated, needs a credential not listed nohumans.shop
io.github.bnmbnmai/apollo-intelligence
https://apolloai.team/mcp
unreachable not listed apolloai.team
io.github.bnovik0v/moltdj
https://api.moltdj.com/mcp/
unreachable not listed api.moltdj.com
io.github.bobross2020/brickpulse-mcp
https://mcp.brickpulse.ai/sse
404 not listed mcp.brickpulse.ai
io.github.bookyo/nsfw-image-detector
https://elysiatools.com/mcp/sse?toolId=nsfw-image-detector
answered, not MCP not listed elysiatools.com
io.github.bperezpereira/mcp
https://mcp.wasabil.com
gated, needs a credential not listed mcp.wasabil.com
io.github.br9704/aethereum
https://www.aethereum.dev/api/mcp
gated, needs a credential not listed www.aethereum.dev
io.github.brainsforai/brains-mcp-connector
https://lets.usebrains.app/mcp
gated, needs a credential not listed lets.usebrains.app
io.github.braintrustdata/braintrust
https://api{region}.braintrust.dev/mcp
unreachable not listed api{region}.braintrust.dev
io.github.bramontiventures/justtranscribe-mcp
https://justtranscribe.ai/api/mcp
gated, needs a credential not listed justtranscribe.ai
io.github.brian-mitchell-sec/workspace-tools
https://vandorla.com/mcp
server error not listed vandorla.com
io.github.brivvyHQ/mcp
https://mcp.brivvy.io
gated, needs a credential not listed mcp.brivvy.io
io.github.brkd-h1/empty-public-canary
https://bintool.brkd.no/anything/mcp-empty-public-canary
answered, not MCP not listed bintool.brkd.no
io.github.brkd-h1/mcp-empty-public
https://bintool.brkd.no/anything/mcp-empty-public
answered, not MCP not listed bintool.brkd.no
io.github.brkd-h1/readme-canary
https://bintool.brkd.no/anything/mcp-brkd-canary
answered, not MCP not listed bintool.brkd.no
io.github.brnbtech770/blocktrust-trustscan
https://blocktrust.tech/mcp/sse
gated, needs a credential not listed blocktrust.tech
io.github.bsrishi/drivara
https://app.drivara.in/mcp
unreachable not listed app.drivara.in
io.github.btmcp/bittensormcp
https://bittensormcp.com/api/mcp
gated, needs a credential not listed bittensormcp.com
io.github.btouchard/herald
https://your-herald-instance.example.com/mcp
unreachable not listed your-herald-instance.example.com
io.github.bubbl-ai/bubbl
https://api.bubblai.com/mcp
gated, needs a credential not listed api.bubblai.com
io.github.bugbug-io/mcp
https://mcp.bugbug.io/mcp
gated, needs a credential not listed mcp.bugbug.io
io.github.buildingapplications/mcp
https://mcp.bilt.me/mcp/sse
404 not listed mcp.bilt.me
io.github.burademirung/protectwith-kb
https://protectwith-kb.burademirung.workers.dev/mcp
404 not listed protectwith-kb.burademirung.workers.dev
io.github.butterbase-ai/mcp
https://api.butterbase.ai/mcp
gated, needs a credential not listed api.butterbase.ai
io.github.byimprint/intelligence
https://byimprint.com/mcp
answered, not MCP not listed byimprint.com
io.github.bylogistry/specmcp
https://mcp.specmcp.com/mcp
gated, needs a credential not listed mcp.specmcp.com
io.github.c5huracan/mcp-finder
https://api.rhdxm.com/mcp/
unreachable not listed api.rhdxm.com
io.github.c5huracan/meyhem
https://api.rhdxm.com/mcp
unreachable not listed api.rhdxm.com
io.github.cabbageandtea/sqlguard
https://sqlguard-eqhq.onrender.com/mcp
unreachable not listed sqlguard-eqhq.onrender.com
io.github.calvinling2021-star/synapse-geo
https://runsynapse.dev/api/mcp
404 not listed runsynapse.dev
io.github.cambriannetwork/cambrian-api
https://mcp.cambrian.org/mcp
gated, needs a credential not listed mcp.cambrian.org
io.github.canonicalmg/sortio
https://mcp.getsortio.com/mcp
gated, needs a credential not listed mcp.getsortio.com
io.github.canuckeats/canuckeats
https://mcp.canuckeats.com/mcp
gated, needs a credential not listed mcp.canuckeats.com
io.github.capabilityhostprotocol/capabilities-txt-registry
https://capabilitiestxt.org/api/mcp
answered, not MCP not listed capabilitiestxt.org
io.github.capabilityhostprotocol/chp
https://capabilityhostprotocol.com/api/mcp
answered, not MCP not listed capabilityhostprotocol.com
io.github.caraulani/euacc-mcp
https://www.euacc.ai/api/mcp
gated, needs a credential not listed www.euacc.ai
io.github.carhaix/oi
https://api.oioioi.ai/mcp
gated, needs a credential not listed api.oioioi.ai
io.github.cariohca-ux/btc-node
https://mcp.btcnode.uk/sse
404 not listed mcp.btcnode.uk
io.github.carlosdania/autopilots
https://mcp.dania.ai/autopilots
404 not listed mcp.dania.ai
io.github.carlosdania/autopilots
https://mcp.dania.ai/sse
404 not listed mcp.dania.ai
io.github.carlosge492/prd-to-flutter-apk
https://37-27-249-33.sslip.io/mcp
unreachable not listed 37-27-249-33.sslip.io
io.github.carrasquelalex1/hipocampo
https://alexbell1-hipocampo-mcp.hf.space/sse
404 not listed alexbell1-hipocampo-mcp.hf.space
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