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 2026-11-08T10:20:21.564Z UTC). How we check.

ServerUsers (30 d)HandshakeAuthToolsLatencyLast checked (UTC)Category
Language fi
io.github.sadri-dridi/lang-fi
0HealthyNone3135 ms2026-11-06T17:45:46.673Zagents-and-memory
KSUID character length
io.github.sadri-dridi/ksuid-len
0HealthyNone3129 ms2026-11-06T17:45:46.669Zagents-and-memory
Language cs
io.github.sadri-dridi/lang-cs
0HealthyNone3131 ms2026-11-06T17:45:46.669Zagents-and-memory
Language da
io.github.sadri-dridi/lang-da
0HealthyNone3129 ms2026-11-06T17:45:46.669Zagents-and-memory
Liters to US gallons
io.github.sadri-dridi/l-to-gal
0HealthyNone3128 ms2026-11-06T17:45:46.667Zagents-and-memory
label[for] count, markup discarded
io.github.sadri-dridi/label-for-ok
0HealthyNone3129 ms2026-11-06T17:45:46.667Zagents-and-memory
KSUID payload charset, value discarded
io.github.sadri-dridi/ksuid-pay
0HealthyNone3142 ms2026-11-06T17:45:46.666Zagents-and-memory
Language be
io.github.sadri-dridi/lang-be
0HealthyNone3141 ms2026-11-06T17:45:46.664Zagents-and-memory
Language cy
io.github.sadri-dridi/lang-cy
0HealthyNone3141 ms2026-11-06T17:45:46.663Zagents-and-memory
KOI8-U high-bit band, bytes discarded
io.github.sadri-dridi/koi8u-ok
0HealthyNone3176 ms2026-11-06T17:45:46.659Zagents-and-memory
Language bn
io.github.sadri-dridi/lang-bn
0HealthyNone3168 ms2026-11-06T17:45:46.657Zagents-and-memory
KSUID 40-hex shape, value discarded
io.github.sadri-dridi/ksuid-hex
0HealthyNone3167 ms2026-11-06T17:45:46.655Zagents-and-memory
KiB to bytes
io.github.sadri-dridi/kib-to-bytes
0HealthyNone31713 ms2026-11-06T17:45:46.611Zagents-and-memory
Language az
io.github.sadri-dridi/lang-az
0HealthyNone3113 ms2026-11-06T17:45:46.339Zagents-and-memory
Language af
io.github.sadri-dridi/lang-af
0HealthyNone3112 ms2026-11-06T17:45:46.313Zagents-and-memory
KSUID shape check
io.github.sadri-dridi/ksuid-shape
0HealthyNone3112 ms2026-11-06T17:45:46.115Zagents-and-memory
Kilopascals to bar, number discarded
io.github.sadri-dridi/kpa-bar
0HealthyNone3110 ms2026-11-06T17:45:46.102Zagents-and-memory
ARIA landmark count, markup discarded
io.github.sadri-dridi/landmark-ok
0HealthyNone3111 ms2026-11-06T17:45:46.101Zagents-and-memory
Language aa
io.github.sadri-dridi/lang-aa
0HealthyNone3120 ms2026-11-06T17:45:46.087Zagents-and-memory
Knots to m/s, number discarded
io.github.sadri-dridi/knot-ms
0HealthyNone3122 ms2026-11-06T17:45:46.082Zagents-and-memory
KSUID Base62 charset, value discarded
io.github.sadri-dridi/ksuid-b62
0HealthyNone3119 ms2026-11-06T17:45:46.082Zagents-and-memory
KSI to megapascals, number discarded
io.github.sadri-dridi/ksi-mpa
0HealthyNone3120 ms2026-11-06T17:45:46.078Zagents-and-memory
KSUID timestamp prefix, value discarded
io.github.sadri-dridi/ksuid-ts
0HealthyNone3117 ms2026-11-06T17:45:46.078Zagents-and-memory
Knots to km/h
io.github.sadri-dridi/knot-to-kmh
0HealthyNone3117 ms2026-11-06T17:45:46.068Zagents-and-memory
KiB to bytes, number discarded
io.github.sadri-dridi/kib-bytes
0HealthyNone3119 ms2026-11-06T17:45:46.066Zagents-and-memory
Keep-Alive timeout band, value discarded
io.github.sadri-dridi/keep-alive-ok
0HealthyNone3120 ms2026-11-06T17:45:46.054Zagents-and-memory
Keccak-256 hex length, input discarded
io.github.sadri-dridi/keccak256
0HealthyNone3114 ms2026-11-06T17:45:46.051Zagents-and-memory
Kilohertz to megahertz, number discarded
io.github.sadri-dridi/khz-mhz
0HealthyNone3112 ms2026-11-06T17:45:46.051Zagents-and-memory
Knots to km/h, number discarded
io.github.sadri-dridi/knot-kmh
0HealthyNone311350 ms2026-11-06T17:45:45.913Zagents-and-memory
km/h to m/s, number discarded
io.github.sadri-dridi/kph-ms
0HealthyNone31929 ms2026-11-06T17:45:45.913Zagents-and-memory
KML Placemark count, body discarded
io.github.sadri-dridi/kml-ok
0HealthyNone31953 ms2026-11-06T17:45:45.895Zagents-and-memory
Keccak-512 hex length, input discarded
io.github.sadri-dridi/keccak512
0HealthyNone311374 ms2026-11-06T17:45:45.877Zagents-and-memory
Kips to kilograms, number discarded
io.github.sadri-dridi/kip-kg
0HealthyNone31856 ms2026-11-06T17:45:45.592Zagents-and-memory
Kilograms to pounds
io.github.sadri-dridi/kg-to-lb
0HealthyNone31922 ms2026-11-06T17:45:45.576Zagents-and-memory
kebab-case shape, text discarded
io.github.sadri-dridi/kebab-ok
0HealthyNone31972 ms2026-11-06T17:45:45.566Zagents-and-memory
Kelvin to celsius
io.github.sadri-dridi/k-to-c
0HealthyNone31974 ms2026-11-06T17:45:45.562Zagents-and-memory
kebab-case charset, value discarded
io.github.sadri-dridi/kebab-case-ok
0HealthyNone31974 ms2026-11-06T17:45:45.562Zagents-and-memory
Kilometers to miles, number discarded
io.github.sadri-dridi/km-miles
0HealthyNone31994 ms2026-11-06T17:45:45.562Zagents-and-memory
Kilocalories to kilojoules, number discarded
io.github.sadri-dridi/kcal-kj
0HealthyNone31982 ms2026-11-06T17:45:45.556Zagents-and-memory
Keep-Alive timeout band, value discarded
io.github.sadri-dridi/keep-ok
0HealthyNone31938 ms2026-11-06T17:45:45.556Zagents-and-memory
Language ar
io.github.sadri-dridi/lang-ar
0HealthyNone31974 ms2026-11-06T17:45:45.556Zagents-and-memory
JWT header.payload.sig shape, value discarded
io.github.sadri-dridi/jwt-hdr
0HealthyNone31965 ms2026-11-06T17:45:45.544Zagents-and-memory
JWT header segment shape, token discarded
io.github.sadri-dridi/jwt-header-ok
0HealthyNone30934 ms2026-11-06T17:45:45.475Zagents-and-memory
JWT header shape, payload discarded
io.github.sadri-dridi/jwt-header
0HealthyNone3119 ms2026-11-06T17:45:44.449Zagents-and-memory
JWKS keys array count, body discarded
io.github.sadri-dridi/jwks-ok
0HealthyNone31310 ms2026-11-06T17:45:44.414Zagents-and-memory
JWT exp claim shape, token discarded
io.github.sadri-dridi/jwt-exp-shape
0HealthyNone3118 ms2026-11-06T17:45:44.316Zagents-and-memory
JSON Pointer shape, path discarded
io.github.sadri-dridi/json-pointer-ok
0HealthyNone3125 ms2026-11-06T17:45:44.315Zagents-and-memory
JWT three-part shape, token discarded
io.github.sadri-dridi/jwt-shape
0HealthyNone31229 ms2026-11-06T17:45:44.305Zagents-and-memory
Julian Day integer band
io.github.sadri-dridi/jd-ok
0HealthyNone3133 ms2026-11-06T17:45:44.302Zagents-and-memory
Kubernetes kind token, manifest discarded
io.github.sadri-dridi/k8s-kind-ok
0HealthyNone31118 ms2026-11-06T17:45:44.300Zcloud-and-infra

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