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, 23736 passed a full MCP handshake, 11765 are up but need credentials, and 4185 failed or were unreachable (last check 2026-11-08T13:20:18.752Z UTC). How we check.
| Server | Users (30 d) | Handshake | Auth | Tools | Latency | Last checked (UTC) | Category |
|---|---|---|---|---|---|---|---|
| URL encode, input discarded io.github.sadri-dridi/urlencode-ok | 0 | Healthy | None | 31 | 14 ms | 2026-11-06T19:20:47.837Z | agents-and-memory |
| UPPERCASE run count, text discarded io.github.sadri-dridi/upper-n | 0 | Healthy | None | 31 | 753 ms | 2026-11-06T19:20:47.674Z | agents-and-memory |
| UPPERCASE run length band, text discarded io.github.sadri-dridi/upper-run | 0 | Healthy | None | 31 | 729 ms | 2026-11-06T19:20:47.674Z | agents-and-memory |
| URL path only io.github.sadri-dridi/url-path | 0 | Healthy | None | 31 | 746 ms | 2026-11-06T19:20:47.674Z | agents-and-memory |
| URL path length, URL discarded io.github.sadri-dridi/url-path-len | 0 | Healthy | None | 31 | 758 ms | 2026-11-06T19:20:47.674Z | agents-and-memory |
| http/https scheme check, URL discarded io.github.sadri-dridi/url-scheme-ok | 0 | Healthy | None | 31 | 717 ms | 2026-11-06T19:20:47.674Z | agents-and-memory |
| UTF-16 unit count, text discarded io.github.sadri-dridi/utf16-len | 0 | Healthy | None | 31 | 740 ms | 2026-11-06T19:20:47.674Z | agents-and-memory |
| UTF-16 code-unit count, text discarded io.github.sadri-dridi/utf16-n | 0 | Healthy | None | 31 | 740 ms | 2026-11-06T19:20:47.674Z | agents-and-memory |
| Utility 2 io.github.sadri-dridi/util-002 | 0 | Healthy | None | 31 | 726 ms | 2026-11-06T19:20:47.674Z | agents-and-memory |
| UPC-A check-digit shape, value discarded io.github.sadri-dridi/upc-check | 0 | Healthy | None | 31 | 700 ms | 2026-11-06T19:20:47.639Z | agents-and-memory |
| URL slug charset, value discarded io.github.sadri-dridi/url-slug-ok | 0 | Healthy | None | 31 | 898 ms | 2026-11-06T19:20:47.639Z | agents-and-memory |
| URL-ish token count, text discarded io.github.sadri-dridi/urlish-n | 0 | Healthy | None | 31 | 705 ms | 2026-11-06T19:20:47.639Z | agents-and-memory |
| URL-ish token charset, value discarded io.github.sadri-dridi/urlish-ok | 0 | Healthy | None | 31 | 705 ms | 2026-11-06T19:20:47.639Z | agents-and-memory |
| UTC Clock io.github.sadri-dridi/utc-clock | 0 | Healthy | None | 31 | 705 ms | 2026-11-06T19:20:47.639Z | agents-and-memory |
| Unix quarter 1-4 from seconds io.github.sadri-dridi/unix-q | 0 | Healthy | None | 31 | 2039 ms | 2026-11-06T19:20:47.606Z | agents-and-memory |
| URN NID shape, value discarded io.github.sadri-dridi/urn-ok | 0 | Healthy | None | 31 | 13 ms | 2026-11-06T19:20:47.606Z | agents-and-memory |
| URL Normalize io.github.sadri-dridi/url-normalize | 0 | Healthy | None | 31 | 1079 ms | 2026-11-06T19:20:47.511Z | agents-and-memory |
| URL origin only io.github.sadri-dridi/url-origin | 0 | Healthy | None | 31 | 10 ms | 2026-11-06T19:20:46.668Z | agents-and-memory |
| UML XMI packagedElement count, markup discarded io.github.sadri-dridi/uml-ok | 0 | Healthy | None | 31 | 2241 ms | 2026-11-06T19:20:46.484Z | agents-and-memory |
| Upgrade protocol token, value discarded io.github.sadri-dridi/upgrade-ok | 0 | Healthy | None | 31 | 2188 ms | 2026-11-06T19:20:46.484Z | agents-and-memory |
| Current UTC hour from unix seconds io.github.sadri-dridi/unix-hr | 0 | Healthy | None | 31 | 2176 ms | 2026-11-06T19:20:46.470Z | agents-and-memory |
| Unix year number io.github.sadri-dridi/unix-year | 0 | Healthy | None | 31 | 1747 ms | 2026-11-06T19:20:46.470Z | agents-and-memory |
| Pacific/Port_Moresby clock io.github.sadri-dridi/tz-pacific-port-moresby | 0 | Healthy | None | 31 | 943 ms | 2026-11-06T19:20:46.430Z | agents-and-memory |
| ULID Crockford charset io.github.sadri-dridi/ulid-crockford | 0 | Healthy | None | 31 | 908 ms | 2026-11-06T19:20:46.430Z | agents-and-memory |
| Micrometers to millimeters, number discarded io.github.sadri-dridi/um-mm | 0 | Healthy | None | 31 | 943 ms | 2026-11-06T19:20:46.430Z | agents-and-memory |
| Unix day-of-year from seconds io.github.sadri-dridi/unix-doy | 0 | Healthy | None | 31 | 943 ms | 2026-11-06T19:20:46.430Z | agents-and-memory |
| Unix hour number io.github.sadri-dridi/unix-hour | 0 | Healthy | None | 31 | 975 ms | 2026-11-06T19:20:46.430Z | agents-and-memory |
| Unix seconds to ISO date, number discarded io.github.sadri-dridi/unix-iso | 0 | Healthy | None | 31 | 868 ms | 2026-11-06T19:20:46.430Z | agents-and-memory |
| Unix seconds to ISO week-date io.github.sadri-dridi/unix-iso-w | 0 | Healthy | None | 31 | 982 ms | 2026-11-06T19:20:46.430Z | agents-and-memory |
| Unix epoch seconds io.github.sadri-dridi/unix-now | 0 | Healthy | None | 31 | 948 ms | 2026-11-06T19:20:46.430Z | agents-and-memory |
| UPPERCASE charset, value discarded io.github.sadri-dridi/upper-ok | 0 | Healthy | None | 31 | 993 ms | 2026-11-06T19:20:46.430Z | agents-and-memory |
| Unix week number from seconds io.github.sadri-dridi/unix-wk | 0 | Healthy | None | 31 | 978 ms | 2026-11-06T19:20:46.357Z | agents-and-memory |
| Unix week number io.github.sadri-dridi/unix-week | 0 | Healthy | None | 31 | 861 ms | 2026-11-06T19:20:45.136Z | agents-and-memory |
| Europe/Tirane clock io.github.sadri-dridi/tz-europe-tirane | 0 | Healthy | None | 31 | 29 ms | 2026-11-06T19:20:44.194Z | agents-and-memory |
| Unix seconds to UTC ISO, value discarded io.github.sadri-dridi/unix-to-iso | 0 | Healthy | None | 31 | 18 ms | 2026-11-06T19:20:44.182Z | agents-and-memory |
| Europe/Podgorica clock io.github.sadri-dridi/tz-europe-podgorica | 0 | Healthy | None | 31 | 16 ms | 2026-11-06T19:20:44.101Z | agents-and-memory |
| Whether a number looks like unix milliseconds io.github.sadri-dridi/unix-ms-ok | 0 | Healthy | None | 31 | 12 ms | 2026-11-06T19:20:43.932Z | agents-and-memory |
| Unix day number io.github.sadri-dridi/unix-day | 0 | Healthy | None | 31 | 12 ms | 2026-11-06T19:20:43.899Z | agents-and-memory |
| UTC clock io.github.sadri-dridi/tz-utc | 0 | Healthy | None | 31 | 300 ms | 2026-11-06T19:20:43.742Z | agents-and-memory |
| ULID shape check io.github.sadri-dridi/ulid-shape | 0 | Healthy | None | 31 | 311 ms | 2026-11-06T19:20:43.742Z | agents-and-memory |
| Microliters to liters, number discarded io.github.sadri-dridi/ul-l | 0 | Healthy | None | 31 | 90 ms | 2026-11-06T19:20:43.738Z | agents-and-memory |
| ULID 48-bit time prefix, value discarded io.github.sadri-dridi/ulid-time | 0 | Healthy | None | 31 | 58 ms | 2026-11-06T19:20:43.738Z | agents-and-memory |
| Time-sortable id shape io.github.sadri-dridi/ulid-now | 0 | Healthy | None | 31 | 131 ms | 2026-11-06T19:20:43.732Z | agents-and-memory |
| Unicode code-point length, text discarded io.github.sadri-dridi/unicode-len | 0 | Healthy | None | 31 | 97 ms | 2026-11-06T19:20:43.732Z | agents-and-memory |
| systemd unit section count, body discarded io.github.sadri-dridi/unitfile-ok | 0 | Healthy | None | 31 | 82 ms | 2026-11-06T19:20:43.732Z | agents-and-memory |
| Pacific/Majuro clock io.github.sadri-dridi/tz-pacific-majuro | 0 | Healthy | None | 31 | 225 ms | 2026-11-06T19:20:43.724Z | agents-and-memory |
| Micrograms to grams, number discarded io.github.sadri-dridi/ug-g | 0 | Healthy | None | 31 | 308 ms | 2026-11-06T19:20:43.724Z | agents-and-memory |
| ULID monotonic counter bits, value discarded io.github.sadri-dridi/ulid-mod | 0 | Healthy | None | 31 | 307 ms | 2026-11-06T19:20:43.724Z | agents-and-memory |
| Pacific/Guam clock io.github.sadri-dridi/tz-pacific-guam | 0 | Healthy | None | 31 | 238 ms | 2026-11-06T19:20:43.722Z | agents-and-memory |
| Pacific/Kiritimati clock io.github.sadri-dridi/tz-pacific-kiritimati | 0 | Healthy | None | 31 | 311 ms | 2026-11-06T19:20:43.721Z | agents-and-memory |
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