Which MCP servers actually work?

We track 48113 servers from the official MCP Registry. 31482 are hosted (remote); we have health-checked 31210 so far. 279 use templated URLs that need user-specific values and can't be checked. Of those checked, 16976 passed a full MCP handshake, 8672 are up but need credentials, and 5562 failed or were unreachable (last check 2026-10-22T04:30:26.715Z UTC). How we check.

ServerUsers (30 d)HandshakeAuthToolsLatencyLast checked (UTC)Category
io.github.cyanheads/bluesky-mcp-server
io.github.cyanheads/bluesky-mcp-server
0HealthyNone81671 ms2026-10-21T15:40:59.981Zai-and-media
io.github.cyanheads/ensembl-mcp-server
io.github.cyanheads/ensembl-mcp-server
0HealthyNone71633 ms2026-10-21T15:40:59.919Zdata-and-databases
io.github.cyanheads/faa-aircraft-registry-mcp-server
io.github.cyanheads/faa-aircraft-registry-mcp-server
0HealthyNone51773 ms2026-10-21T15:40:59.883Zother
io.github.cyanheads/eurostat-mcp-server
io.github.cyanheads/eurostat-mcp-server
0HealthyNone81396 ms2026-10-21T15:40:59.620Zdata-and-databases
io.github.cyanheads/eur-lex-mcp-server
io.github.cyanheads/eur-lex-mcp-server
0HealthyNone71288 ms2026-10-21T15:40:59.559Zproductivity
io.github.cyanheads/elevation-mcp-server
io.github.cyanheads/elevation-mcp-server
0HealthyNone41392 ms2026-10-21T15:40:59.433Zdata-and-databases
io.github.cyanheads/brapi-mcp-server
io.github.cyanheads/brapi-mcp-server
0HealthyNone221893 ms2026-10-21T15:36:50.841Zai-and-media
io.github.cyanheads/datacite-mcp-server
io.github.cyanheads/datacite-mcp-server
0HealthyNone61329 ms2026-10-21T15:36:50.642Zdeveloper-tools
io.github.cyanheads/courtlistener-mcp-server
io.github.cyanheads/courtlistener-mcp-server
0HealthyNone141651 ms2026-10-21T15:36:50.486Zai-and-media
io.github.cyanheads/devops-status-mcp-server
io.github.cyanheads/devops-status-mcp-server
0HealthyNone72320 ms2026-10-21T15:36:50.197Zcloud-and-infra
io.github.cyanheads/earthquake-mcp-server
io.github.cyanheads/earthquake-mcp-server
0HealthyNone42378 ms2026-10-21T15:36:49.923Zother
io.github.cyanheads/cyanheads-mcp-server
io.github.cyanheads/cyanheads-mcp-server
0HealthyNone21717 ms2026-10-21T15:36:49.603Zdocs-and-knowledge
io.github.cyanheads/crossref-mcp-server
io.github.cyanheads/crossref-mcp-server
0HealthyNone72324 ms2026-10-21T15:36:49.406Zsales-and-crm
io.github.cyanheads/eia-energy-mcp-server
io.github.cyanheads/eia-energy-mcp-server
0HealthyNone62105 ms2026-10-21T15:36:49.396Zdata-and-databases
io.github.cyanheads/cisa-cybersecurity-mcp-server
io.github.cyanheads/cisa-cybersecurity-mcp-server
0HealthyNone72236 ms2026-10-21T15:36:48.897Zsecurity
io.github.cyanheads/cpsc-recalls-mcp-server
io.github.cyanheads/cpsc-recalls-mcp-server
0HealthyNone32129 ms2026-10-21T15:36:48.856Zother
io.github.cyanheads/college-scorecard-mcp-server
io.github.cyanheads/college-scorecard-mcp-server
0HealthyNone92112 ms2026-10-21T15:36:48.818Zmarketing-and-seo
io.github.cyanheads/congressgov-mcp-server
io.github.cyanheads/congressgov-mcp-server
0HealthyNone101844 ms2026-10-21T15:36:48.719Zdocs-and-knowledge
io.github.cyanheads/chembl-mcp-server
io.github.cyanheads/chembl-mcp-server
0HealthyNone72073 ms2026-10-21T15:36:48.586Zhealth-and-science
cern-inspire-mcp-server
io.github.cyanheads/cern-inspire-mcp-server
0HealthyNone82144 ms2026-10-21T15:36:47.884Zhealth-and-science
io.github.cyanheads/cern-opendata-mcp-server
io.github.cyanheads/cern-opendata-mcp-server
0HealthyNone72381 ms2026-10-21T15:36:47.693Zdata-and-databases
3DLogo.io
io.github.cottom/3dlogo
0HealthyNone292472 ms2026-10-21T15:36:47.682Zai-and-media
io.github.cyanheads/census-mcp-server
io.github.cyanheads/census-mcp-server
0HealthyNone82477 ms2026-10-21T15:36:47.175Zdata-and-databases
io.github.cyanheads/bls-labor-mcp-server
io.github.cyanheads/bls-labor-mcp-server
0HealthyNone62381 ms2026-10-21T15:36:46.621Zdata-and-databases
io.github.chenyujing1234-netizen/trueai
io.github.chenyujing1234-netizen/trueai
0HealthyNone44333 ms2026-10-21T15:36:46.466Zai-and-media
io.github.cyanheads/cdc-health-mcp-server
io.github.cyanheads/cdc-health-mcp-server
0HealthyNone52264 ms2026-10-21T15:36:46.437Zdata-and-databases
io.github.cyanheads/clinicaltrialsgov-mcp-server
io.github.cyanheads/clinicaltrialsgov-mcp-server
0HealthyNone72355 ms2026-10-21T15:36:46.003Zhealth-and-science
io.github.cyanheads/browser-compat-mcp-server
io.github.cyanheads/browser-compat-mcp-server
0HealthyNone52351 ms2026-10-21T15:36:45.891Zbrowser-automation
io.github.cyanheads/aviation-weather-mcp-server
io.github.cyanheads/aviation-weather-mcp-server
0HealthyNone52207 ms2026-10-21T15:36:45.724Zlocation-and-travel
io.github.cyanheads/calculator-mcp-server
io.github.cyanheads/calculator-mcp-server
0HealthyNone11770 ms2026-10-21T15:36:45.624Zother
io.github.cyanheads/astronomy-mcp-server
io.github.cyanheads/astronomy-mcp-server
0HealthyNone72032 ms2026-10-21T15:36:45.324Zlocation-and-travel
io.github.cyanheads/biorxiv-mcp-server
io.github.cyanheads/biorxiv-mcp-server
0HealthyNone72053 ms2026-10-21T15:36:45.179Zmarketing-and-seo
io.github.cyanheads/art-institute-chicago-mcp-server
io.github.cyanheads/art-institute-chicago-mcp-server
0HealthyNone61990 ms2026-10-21T15:36:44.766Zai-and-media
API Tool Calls
io.github.cowerxdev/apitoolcalls
0HealthyNone941554 ms2026-10-21T15:36:44.551Zproductivity
Picorn
io.github.cueqzapper/picorn
0HealthyNone441356 ms2026-10-21T15:36:44.297Zai-and-media
io.github.cyanheads/arxiv-mcp-server
io.github.cyanheads/arxiv-mcp-server
0HealthyNone42128 ms2026-10-21T15:36:44.043Zhealth-and-science
Gloria AI
io.github.cryptobriefing-labs/gloria-mcp
0HealthyNone71741 ms2026-10-21T15:36:43.768Zsearch-and-web
sigelo
io.github.csigelo/sigelo
0HealthyNone11532 ms2026-10-21T15:36:43.569Zagents-and-memory
Agentry — The Trust Layer for the Agent Economy
io.github.cthulhutoo/agentry
0HealthyNone361590 ms2026-10-21T15:36:43.221Zagents-and-memory
Proximens Oracle
io.github.cryptosun/proximens-oracle
0HealthyNone81540 ms2026-10-21T15:36:43.210Zsearch-and-web
Supericons
io.github.curlymolelabs/supericons
0HealthyNone51573 ms2026-10-21T15:36:42.623Zdesign
io.github.cryptomfer/cc0company-mcp
io.github.cryptomfer/cc0company-mcp
0HealthyNone291146 ms2026-10-21T15:36:42.423Zcrypto-web3
Swarm Tips — Earn, Spend, and Discover for AI Agents
io.github.corsur/swarm-tips
0HealthyNone402205 ms2026-10-21T15:36:42.261Zcrypto-web3
io.github.cturkieh/france-data-mcp
io.github.cturkieh/france-data-mcp
0HealthyNone371201 ms2026-10-21T15:36:42.072Zhealth-and-science
io.github.cowboyhq/cowboy-model-finder
io.github.cowboyhq/cowboy-model-finder
0HealthyNone3876 ms2026-10-21T15:36:42.055Zdesign
io.github.cwhited26/pocket-agent-mcp
io.github.cwhited26/pocket-agent-mcp
0HealthyNone41101 ms2026-10-21T15:36:42.002Zagents-and-memory
Velora LATAM Tools
io.github.crossi-dev/latam-tools
0HealthyNone221158 ms2026-10-21T15:36:41.482Zfinance-and-payments
io.github.crewdog77/prerolltubes-mcp
io.github.crewdog77/prerolltubes-mcp
0HealthyNone11044 ms2026-10-21T15:36:41.216Zecommerce
Configure Memory
io.github.configure-dev/configure-memory
0HealthyNone91288 ms2026-10-21T15:36:40.717Zagents-and-memory
Vurto Swap
io.github.cryptoconspiracy/vurto-swap
0HealthyNone181442 ms2026-10-21T15:36:40.669Zcrypto-web3

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