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, 23734 passed a full MCP handshake, 11763 are up but need credentials, and 4189 failed or were unreachable (last check 2026-11-08T09:55:30.585Z UTC). How we check.

ServerUsers (30 d)HandshakeAuthToolsLatencyLast checked (UTC)Category
HTTP 415 unsupported-media
io.github.sadri-dridi/http-415		0HealthyNone31247 ms2026-11-06T17:35:41.958Zagents-and-memory
HTTP 202 accepted
io.github.sadri-dridi/http-202		0HealthyNone31312 ms2026-11-06T17:35:41.957Zagents-and-memory
HTTP 404 not-found
io.github.sadri-dridi/http-404		0HealthyNone31211 ms2026-11-06T17:35:41.955Zagents-and-memory
HTTP 301 moved-permanently
io.github.sadri-dridi/http-301		0HealthyNone31337 ms2026-11-06T17:35:41.948Zagents-and-memory
Horsepower to watts
io.github.sadri-dridi/hp-to-watt		0HealthyNone31314 ms2026-11-06T17:35:41.946Zagents-and-memory
HTML numeric-entity count, input discarded
io.github.sadri-dridi/html-numesc		0HealthyNone313377 ms2026-11-06T17:30:49.721Zagents-and-memory
Hostname shape, value discarded
io.github.sadri-dridi/hostname-ok		0HealthyNone311496 ms2026-11-06T17:30:49.686Zagents-and-memory
Mechanical horsepower to kW, number discarded
io.github.sadri-dridi/hp-kw		0HealthyNone311508 ms2026-11-06T17:30:49.686Zagents-and-memory
HTML escape length, text discarded
io.github.sadri-dridi/html-escape-ok		0HealthyNone313322 ms2026-11-06T17:30:49.606Zagents-and-memory
Es la hora de la verdad (Congreso de los Diputados)
es.eslahoradelaverdad/congreso		0HealthyNone83314 ms2026-11-06T17:30:48.311Zother
Hogsheads to liters, number discarded
io.github.sadri-dridi/hogshead-l		0HealthyNone311497 ms2026-11-06T17:30:47.828Zagents-and-memory
hosts file token count, line discarded
io.github.sadri-dridi/hosts-ok		0HealthyNone311489 ms2026-11-06T17:30:47.828Zagents-and-memory
HTTP 102 processing
io.github.sadri-dridi/http-102		0HealthyNone311510 ms2026-11-06T17:30:47.828Zagents-and-memory
HTTP 103 early-hints
io.github.sadri-dridi/http-103		0HealthyNone311508 ms2026-11-06T17:30:47.828Zagents-and-memory
HTTP 300 multiple-choices
io.github.sadri-dridi/http-300		0HealthyNone311500 ms2026-11-06T17:30:47.828Zagents-and-memory
HTTP 100 continue
io.github.sadri-dridi/http-100		0HealthyNone311578 ms2026-11-06T17:30:47.813Zagents-and-memory
HTTP 400 bad-request
io.github.sadri-dridi/http-400		0HealthyNone311466 ms2026-11-06T17:30:47.787Zagents-and-memory
HTTP 206 partial-content
io.github.sadri-dridi/http-206		0HealthyNone3117 ms2026-11-06T17:30:47.683Zagents-and-memory
BCP 47 lang attribute shape
io.github.sadri-dridi/html-lang-ok		0HealthyNone3120 ms2026-11-06T17:30:46.070Zagents-and-memory
HTML h1 count, markup discarded
io.github.sadri-dridi/html-h1-n		0HealthyNone3123 ms2026-11-06T17:30:46.063Zagents-and-memory
32 hex chars
io.github.sadri-dridi/hex-32		0HealthyNone3120 ms2026-11-06T17:30:46.060Zagents-and-memory
HTTP 200 ok
io.github.sadri-dridi/http-200		0HealthyNone3120 ms2026-11-06T17:30:46.060Zagents-and-memory
Hebrew month 1-13 band
io.github.sadri-dridi/hebrew-mo		0HealthyNone3120 ms2026-11-06T17:30:46.056Zagents-and-memory
Hex encode, input discarded
io.github.sadri-dridi/hex-ok		0HealthyNone3122 ms2026-11-06T17:30:46.056Zagents-and-memory
HQX run-length band, input discarded
io.github.sadri-dridi/hqx-ok		0HealthyNone3129 ms2026-11-06T17:30:46.052Zagents-and-memory
HTML tag count, markup discarded
io.github.sadri-dridi/html-tag-count		0HealthyNone3118 ms2026-11-06T17:30:46.052Zagents-and-memory
HTTP 101 switching-protocols
io.github.sadri-dridi/http-101		0HealthyNone3121 ms2026-11-06T17:30:46.051Zagents-and-memory
HTML script tag count, markup discarded
io.github.sadri-dridi/html-script-n		0HealthyNone3118 ms2026-11-06T17:30:46.039Zagents-and-memory
html lang attribute shape, markup discarded
io.github.sadri-dridi/htmllang-ok		0HealthyNone3118 ms2026-11-06T17:30:46.039Zagents-and-memory
HSTS max-age band, value discarded
io.github.sadri-dridi/hsts-ok		0HealthyNone3116 ms2026-11-06T17:30:46.029Zagents-and-memory
HTML meta tag count, markup discarded
io.github.sadri-dridi/html-meta-n		0HealthyNone3113 ms2026-11-06T17:30:46.029Zagents-and-memory
HSL tuple shape
io.github.sadri-dridi/hsl-ok		0HealthyNone3121 ms2026-11-06T17:30:46.006Zagents-and-memory
UTC hour
io.github.sadri-dridi/hour-utc		0HealthyNone3116 ms2026-11-06T17:30:45.970Zagents-and-memory
Hostname label count
io.github.sadri-dridi/host-labels		0HealthyNone31223 ms2026-11-06T17:30:45.796Zagents-and-memory
Hostname shape, value discarded
io.github.sadri-dridi/host-ok		0HealthyNone31226 ms2026-11-06T17:30:45.796Zagents-and-memory
UTC hour 0-23 band
io.github.sadri-dridi/hour-ok		0HealthyNone31184 ms2026-11-06T17:30:45.796Zagents-and-memory
HMAC-SHA256 hex length, input discarded
io.github.sadri-dridi/hmac-sha256		0HealthyNone31257 ms2026-11-06T17:30:45.791Zagents-and-memory
HMAC-SHA256 hex length, input discarded
io.github.sadri-dridi/hmac256-len		0HealthyNone31223 ms2026-11-06T17:30:45.791Zagents-and-memory
HMAC-SHA1 hex length, input discarded
io.github.sadri-dridi/hmac1-len		0HealthyNone31253 ms2026-11-06T17:30:45.790Zagents-and-memory
host:port shape, value discarded
io.github.sadri-dridi/host-port-ok		0HealthyNone31331 ms2026-11-06T17:30:45.789Zagents-and-memory
Hjson comment shape, body discarded
io.github.sadri-dridi/hjson-ok		0HealthyNone31452 ms2026-11-06T17:30:45.788Zagents-and-memory
Hours to seconds
io.github.sadri-dridi/hr-to-sec		0HealthyNone31448 ms2026-11-06T17:30:45.787Zagents-and-memory
Whether Hebrew year is embolismic
io.github.sadri-dridi/hebrew-leap		0HealthyNone31457 ms2026-11-06T17:30:45.771Zagents-and-memory
Hex color to RGB
io.github.sadri-dridi/hex-rgb		0HealthyNone31438 ms2026-11-06T17:30:45.770Zagents-and-memory
Helm chart.yaml name shape, body discarded
io.github.sadri-dridi/helm-chart-ok		0HealthyNone31438 ms2026-11-06T17:30:45.768Zagents-and-memory
HN Front Count
io.github.sadri-dridi/hn-front-count		0HealthyNone31428 ms2026-11-06T17:30:45.767Zagents-and-memory
HTML entity count, markup discarded
io.github.sadri-dridi/html-entities-ok		0HealthyNone31437 ms2026-11-06T17:30:45.766Zagents-and-memory
Uppercase hex charset, input discarded
io.github.sadri-dridi/hex-ucase		0HealthyNone3157 ms2026-11-06T17:30:45.721Zagents-and-memory
Hijri year band
io.github.sadri-dridi/hijri-ok		0HealthyNone3150 ms2026-11-06T17:30:45.348Zagents-and-memory
16 hex chars
io.github.sadri-dridi/hex-16		0HealthyNone3168 ms2026-11-06T17:30:45.312Zagents-and-memory

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