Which MCP servers actually work?

We track 51099 servers from the official MCP Registry. 33811 are hosted (remote); we have health-checked 33528 so far. 293 use templated URLs that need user-specific values and can't be checked. Of those checked, 20300 passed a full MCP handshake, 9501 are up but need credentials, and 3727 failed or were unreachable (last check 2026-10-27T10:00:37.514Z UTC). How we check.

ServerUsers (30 d)HandshakeAuthToolsLatencyLast checked (UTC)Category
Oyez
io.github.pipeworx-io/oyez		0HealthyNone4551 ms2026-10-26T06:15:12.112Zagents-and-memory
Packagephobia
io.github.pipeworx-io/packagephobia		0HealthyNone4365 ms2026-10-26T06:15:12.104Zagents-and-memory
Oxylabs
io.github.pipeworx-io/oxylabs		0HealthyNone4533 ms2026-10-26T06:15:12.062Zsearch-and-web
Owid
io.github.pipeworx-io/owid		0HealthyNone4563 ms2026-10-26T06:15:12.051Zsearch-and-web
Overheid Nl
io.github.pipeworx-io/overheid-nl		0HealthyNone46181 ms2026-10-26T06:15:12.008Zagents-and-memory
Outlook Calendar
io.github.pipeworx-io/outlook-calendar		0HealthyNone47157 ms2026-10-26T06:15:11.993Zproductivity
Owasp
io.github.pipeworx-io/owasp		0HealthyNone46646 ms2026-10-26T06:15:11.989Zagents-and-memory
Osv
io.github.pipeworx-io/osv		0HealthyNone462414 ms2026-10-26T06:15:11.988Zdeveloper-tools
Overpass
io.github.pipeworx-io/overpass		0HealthyNone45148 ms2026-10-26T06:15:11.968Zagents-and-memory
Osf
io.github.pipeworx-io/osf		0HealthyNone462488 ms2026-10-26T06:15:11.911Zagents-and-memory
Outlook Mail
io.github.pipeworx-io/outlook-mail		0HealthyNone472476 ms2026-10-26T06:15:11.909Zcommunication
Osrm
io.github.pipeworx-io/osrm		0HealthyNone472040 ms2026-10-26T06:15:11.868Zagents-and-memory
Orcid
io.github.pipeworx-io/orcid		0HealthyNone482167 ms2026-10-26T06:15:11.864Zagents-and-memory
Opentreeoflife
io.github.pipeworx-io/opentreeoflife		0HealthyNone452065 ms2026-10-26T06:15:11.862Zfinance-and-payments
Outlook Contacts
io.github.pipeworx-io/outlook-contacts		0HealthyNone462039 ms2026-10-26T06:15:11.860Zcommunication
Oregon Code
io.github.pipeworx-io/oregon-code		0HealthyNone432039 ms2026-10-26T06:15:11.856Zagents-and-memory
Openweather
io.github.pipeworx-io/openweather		0HealthyNone462103 ms2026-10-26T06:15:11.824Zlocation-and-travel
Osha
io.github.pipeworx-io/osha		0HealthyNone472148 ms2026-10-26T06:15:11.821Zagents-and-memory
Oqmd
io.github.pipeworx-io/oqmd		0HealthyNone452154 ms2026-10-26T06:15:11.765Zagents-and-memory
Openverse
io.github.pipeworx-io/openverse		0HealthyNone482015 ms2026-10-26T06:15:11.263Zai-and-media
Opentopography
io.github.pipeworx-io/opentopography		0HealthyNone452029 ms2026-10-26T06:15:11.260Zagents-and-memory
Opentripmap
io.github.pipeworx-io/opentripmap		0HealthyNone462031 ms2026-10-26T06:15:11.256Zsearch-and-web
Or Dmv
io.github.pipeworx-io/or-dmv		0HealthyNone44373 ms2026-10-26T06:10:17.124Zproductivity
Opensea
io.github.pipeworx-io/opensea		0HealthyNone47120 ms2026-10-26T06:10:17.096Zagents-and-memory
Opentopodata
io.github.pipeworx-io/opentopodata		0HealthyNone44103 ms2026-10-26T06:10:17.095Zagents-and-memory
Opensky
io.github.pipeworx-io/opensky		0HealthyNone46170 ms2026-10-26T06:10:17.089Zagents-and-memory
Opentargets
io.github.pipeworx-io/opentargets		0HealthyNone49191 ms2026-10-26T06:10:17.080Zhealth-and-science
Openiban
io.github.pipeworx-io/openiban		0HealthyNone44165 ms2026-10-26T06:10:17.072Zfinance-and-payments
Opensensemap
io.github.pipeworx-io/opensensemap		0HealthyNone45155 ms2026-10-26T06:10:17.069Zagents-and-memory
Openrouteservice
io.github.pipeworx-io/openrouteservice		0HealthyNone49147 ms2026-10-26T06:10:17.066Zlocation-and-travel
Openrouter
io.github.pipeworx-io/openrouter		0HealthyNone45140 ms2026-10-26T06:10:17.057Zagents-and-memory
Openfoodfacts
io.github.pipeworx-io/openfoodfacts		0HealthyNone47134 ms2026-10-26T06:10:17.054Zagents-and-memory
Openholidays
io.github.pipeworx-io/openholidays		0HealthyNone46131 ms2026-10-26T06:10:16.758Zagents-and-memory
Openreview
io.github.pipeworx-io/openreview		0HealthyNone48122 ms2026-10-26T06:10:16.755Zproductivity
Openfigi
io.github.pipeworx-io/openfigi		0HealthyNone45150 ms2026-10-26T06:10:16.752Zagents-and-memory
Openligadb
io.github.pipeworx-io/openligadb		0HealthyNone4648 ms2026-10-26T06:10:16.505Zagents-and-memory
Openparliament Ca
io.github.pipeworx-io/openparliament-ca		0HealthyNone5070 ms2026-10-26T06:10:16.500Zagents-and-memory
Openfema
io.github.pipeworx-io/openfema		0HealthyNone4542 ms2026-10-26T06:10:16.458Zagents-and-memory
Opendota
io.github.pipeworx-io/opendota		0HealthyNone4643 ms2026-10-26T06:10:16.451Zagents-and-memory
Openf1
io.github.pipeworx-io/openf1		0HealthyNone4645 ms2026-10-26T06:10:16.433Zagents-and-memory
Openfda
io.github.pipeworx-io/openfda		0HealthyNone60109 ms2026-10-26T06:10:16.374Zhealth-and-science
Openfoodtox
io.github.pipeworx-io/openfoodtox		0HealthyNone4485 ms2026-10-26T06:10:16.367Zagents-and-memory
Openei Urdb
io.github.pipeworx-io/openei-urdb		0HealthyNone45104 ms2026-10-26T06:10:16.355Zagents-and-memory
Opendatasoft
io.github.pipeworx-io/opendatasoft		0HealthyNone47118 ms2026-10-26T06:10:16.350Zagents-and-memory
Opendata Swiss
io.github.pipeworx-io/opendata-swiss		0HealthyNone47113 ms2026-10-26T06:10:16.348Zagents-and-memory
Opendosm My
io.github.pipeworx-io/opendosm-my		0HealthyNone45101 ms2026-10-26T06:10:16.336Zagents-and-memory
Opencollective
io.github.pipeworx-io/opencollective		0HealthyNone4695 ms2026-10-26T06:10:16.333Zagents-and-memory
Openchargemap
io.github.pipeworx-io/openchargemap		0HealthyNone4496 ms2026-10-26T06:10:16.323Zlocation-and-travel
Opencellid
io.github.pipeworx-io/opencellid		0HealthyNone4487 ms2026-10-26T06:10:16.296Zagents-and-memory
Opencitations
io.github.pipeworx-io/opencitations		0HealthyNone4882 ms2026-10-26T06:10:16.292Zagents-and-memory

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