Which MCP servers actually work?

We track 59133 servers from the official MCP Registry. 40018 are hosted (remote); we have health-checked 39686 so far. 343 use templated URLs that need user-specific values and can't be checked. Of those checked, 23739 passed a full MCP handshake, 11764 are up but need credentials, and 4183 failed or were unreachable (last check 2026-11-08T12:30:24.105Z UTC). How we check.

ServerUsers (30 d)HandshakeAuthToolsLatencyLast checked (UTC)Category
TopoJSON object count, body discarded
io.github.sadri-dridi/topojson-ok
0HealthyNone3119 ms2026-11-06T18:45:46.336Zagents-and-memory
Tk tracking status token, value discarded
io.github.sadri-dridi/tk-ok
0HealthyNone3120 ms2026-11-06T18:45:46.167Zagents-and-memory
Title Case token length band, text discarded
io.github.sadri-dridi/title-run
0HealthyNone3120 ms2026-11-06T18:45:46.166Zagents-and-memory
Title-case token count, text discarded
io.github.sadri-dridi/title-case-ok
0HealthyNone3119 ms2026-11-06T18:45:46.164Zagents-and-memory
Cassandra unixTimeUUID layout, value discarded
io.github.sadri-dridi/timeuuid-unix
0HealthyNone3116 ms2026-11-06T18:45:46.161Zagents-and-memory
Transfer-Encoding chunked token, value discarded
io.github.sadri-dridi/transfer-ok
0HealthyNone3111 ms2026-11-06T18:45:46.150Zagents-and-memory
Title Case token shape, value discarded
io.github.sadri-dridi/title-ok
0HealthyNone3117 ms2026-11-06T18:45:46.131Zagents-and-memory
Tiger-160 hex length, input discarded
io.github.sadri-dridi/tiger160
0HealthyNone3113 ms2026-11-06T18:45:45.848Zagents-and-memory
Tiger hex length, input discarded
io.github.sadri-dridi/tiger-len
0HealthyNone3112 ms2026-11-06T18:45:45.844Zagents-and-memory
Therms to megajoules, number discarded
io.github.sadri-dridi/therm-mj
0HealthyNone3115 ms2026-11-06T18:45:45.840Zagents-and-memory
Timezone Clock
io.github.sadri-dridi/timezone-clock
0HealthyNone3115 ms2026-11-06T18:45:45.837Zagents-and-memory
TIFF magic-byte check, file discarded
io.github.sadri-dridi/tiff-magic
0HealthyNone3113 ms2026-11-06T18:45:45.831Zagents-and-memory
TE / transfer-encoding token shape
io.github.sadri-dridi/te-ok
0HealthyNone3110 ms2026-11-06T18:45:45.830Zagents-and-memory
ticker symbol charset, value discarded
io.github.sadri-dridi/ticker-ok
0HealthyNone3113 ms2026-11-06T18:45:45.824Zagents-and-memory
Thrift field-id count, body discarded
io.github.sadri-dridi/thrift-ok
0HealthyNone31187 ms2026-11-06T18:45:45.632Zagents-and-memory
Think Steps
io.github.sadri-dridi/think-steps
0HealthyNone31207 ms2026-11-06T18:45:45.630Zagents-and-memory
Title Case token count, text discarded
io.github.sadri-dridi/title-n
0HealthyNone31185 ms2026-11-06T18:45:45.630Zagents-and-memory
TIS-620 byte band, input discarded
io.github.sadri-dridi/tis620-ok
0HealthyNone31315 ms2026-11-06T18:45:45.629Zagents-and-memory
whitespace token count, text discarded
io.github.sadri-dridi/token-n
0HealthyNone31244 ms2026-11-06T18:45:45.627Zagents-and-memory
Terraform block count, body discarded
io.github.sadri-dridi/terraform-ok
0HealthyNone31418 ms2026-11-06T18:45:45.613Zcloud-and-infra
TE trailers token, value discarded
io.github.sadri-dridi/te-trailers
0HealthyNone3160 ms2026-11-06T18:45:45.602Zagents-and-memory
TeX control-word count, body discarded
io.github.sadri-dridi/tex-ok
0HealthyNone3166 ms2026-11-06T18:45:45.602Zproductivity
Tiger hex length, input discarded
io.github.sadri-dridi/tiger-ok
0HealthyNone3160 ms2026-11-06T18:45:45.602Zagents-and-memory
Stones to kilograms, number discarded
io.github.sadri-dridi/stone-kg
0HealthyNone3171 ms2026-11-06T18:45:45.599Zagents-and-memory
Tablespoons to milliliters
io.github.sadri-dridi/tbsp-to-ml
0HealthyNone3172 ms2026-11-06T18:45:45.599Zagents-and-memory
SysML block count, body discarded
io.github.sadri-dridi/sysml-ok
0HealthyNone3161 ms2026-11-06T18:45:45.596Zagents-and-memory
Steres to cubic meters, number discarded
io.github.sadri-dridi/stere-m3
0HealthyNone3163 ms2026-11-06T18:45:45.594Zagents-and-memory
TAR ustar check, file discarded
io.github.sadri-dridi/tar-magic
0HealthyNone3116 ms2026-11-06T18:45:45.163Zagents-and-memory
Alt-Svc h3 host:port shape, value discarded
io.github.sadri-dridi/svc-ok
0HealthyNone3118 ms2026-11-06T18:45:45.132Zagents-and-memory
tab count, text discarded
io.github.sadri-dridi/tab-ok
0HealthyNone3112 ms2026-11-06T18:45:45.127Zagents-and-memory
Tabindex integer band, value discarded
io.github.sadri-dridi/tabindex-ok
0HealthyNone3119 ms2026-11-06T18:45:45.113Zagents-and-memory
US state RI
io.github.sadri-dridi/st-ri
0HealthyNone31271 ms2026-11-06T18:45:44.959Zagents-and-memory
Supabase URL Shape
io.github.sadri-dridi/supabase-url-shape
0HealthyNone31154 ms2026-11-06T18:45:44.947Zdata-and-databases
tag: URI shape, value discarded
io.github.sadri-dridi/tag-uri
0HealthyNone31223 ms2026-11-06T18:45:44.947Zagents-and-memory
US state SD
io.github.sadri-dridi/st-sd
0HealthyNone31222 ms2026-11-06T18:45:44.939Zagents-and-memory
STEP ISO-10303 header, file discarded
io.github.sadri-dridi/step-ok
0HealthyNone3153 ms2026-11-06T18:45:44.939Zagents-and-memory
STL solid/header check, file discarded
io.github.sadri-dridi/stl-ok
0HealthyNone31233 ms2026-11-06T18:45:44.939Zagents-and-memory
tel: URI digit shape, value discarded
io.github.sadri-dridi/tel-uri
0HealthyNone31146 ms2026-11-06T18:45:44.939Zagents-and-memory
Streebog-256 hex length, input discarded
io.github.sadri-dridi/streebog-ok
0HealthyNone31221 ms2026-11-06T18:45:44.934Zagents-and-memory
Tablespoons to milliliters, number discarded
io.github.sadri-dridi/tbsp-ml
0HealthyNone31209 ms2026-11-06T18:45:44.934Zagents-and-memory
US state WV
io.github.sadri-dridi/st-wv
0HealthyNone31220 ms2026-11-06T18:45:44.931Zagents-and-memory
Imperial tablespoons to milliliters, number discarded
io.github.sadri-dridi/tbsp-imp
0HealthyNone31220 ms2026-11-06T18:45:44.923Zagents-and-memory
syslog PRI band, line discarded
io.github.sadri-dridi/syslog-ok
0HealthyNone31221 ms2026-11-06T18:45:44.917Zagents-and-memory
US state UT
io.github.sadri-dridi/st-ut
0HealthyNone31218 ms2026-11-06T18:45:44.916Zagents-and-memory
Approximate sunrise hour UTC for a latitude
io.github.sadri-dridi/sunrise-hint
0HealthyNone31207 ms2026-11-06T18:45:44.908Zagents-and-memory
US state OR
io.github.sadri-dridi/st-or
0HealthyNone3118 ms2026-11-06T18:45:44.901Zagents-and-memory
US state NY
io.github.sadri-dridi/st-ny
0HealthyNone3115 ms2026-11-06T18:45:44.631Zagents-and-memory
US state VT
io.github.sadri-dridi/st-vt
0HealthyNone31363 ms2026-11-06T18:45:44.576Zagents-and-memory
US state WI
io.github.sadri-dridi/st-wi
0HealthyNone3126 ms2026-11-06T18:45:44.508Zagents-and-memory
US state NH
io.github.sadri-dridi/st-nh
0HealthyNone3143 ms2026-11-06T18:45:44.498Zagents-and-memory

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