We track 50214 servers from the official MCP Registry. 33175 are hosted (remote); we have health-checked 32892 so far. 292 use templated URLs that need user-specific values and can't be checked. Of those checked, 18133 passed a full MCP handshake, 9261 are up but need credentials, and 5498 failed or were unreachable (last check 2026-10-25T20:40:13.004Z UTC). How we check.
| Server | Users (30 d) | Handshake | Auth | Tools | Latency | Last checked (UTC) | Category |
|---|---|---|---|---|---|---|---|
| HTTP 403 forbidden io.github.sadri-dridi/http-403 | 0 | Healthy | None | 31 | 222 ms | 2026-10-24T20:55:13.820Z | agents-and-memory |
| HTTP 401 unauthorized io.github.sadri-dridi/http-401 | 0 | Healthy | None | 31 | 213 ms | 2026-10-24T20:55:13.815Z | agents-and-memory |
| HTTP 308 permanent-redirect io.github.sadri-dridi/http-308 | 0 | Healthy | None | 31 | 203 ms | 2026-10-24T20:55:13.804Z | agents-and-memory |
| HTTP 414 uri-too-long io.github.sadri-dridi/http-414 | 0 | Healthy | None | 31 | 199 ms | 2026-10-24T20:55:13.790Z | agents-and-memory |
| HTTP 412 precondition-failed io.github.sadri-dridi/http-412 | 0 | Healthy | None | 31 | 179 ms | 2026-10-24T20:55:13.774Z | agents-and-memory |
| HTTP 409 conflict io.github.sadri-dridi/http-409 | 0 | Healthy | None | 31 | 168 ms | 2026-10-24T20:55:13.768Z | agents-and-memory |
| HTTP 408 request-timeout io.github.sadri-dridi/http-408 | 0 | Healthy | None | 31 | 157 ms | 2026-10-24T20:55:13.758Z | agents-and-memory |
| HTTP 400 bad-request io.github.sadri-dridi/http-400 | 0 | Healthy | None | 31 | 27 ms | 2026-10-24T20:55:13.535Z | agents-and-memory |
| HTTP 404 not-found io.github.sadri-dridi/http-404 | 0 | Healthy | None | 31 | 29 ms | 2026-10-24T20:55:12.995Z | agents-and-memory |
| HTML h1 count, markup discarded io.github.sadri-dridi/html-h1-n | 0 | Healthy | None | 31 | 683 ms | 2026-10-24T20:55:12.972Z | agents-and-memory |
| HTTP 204 no-content io.github.sadri-dridi/http-204 | 0 | Healthy | None | 31 | 202 ms | 2026-10-24T20:55:12.972Z | agents-and-memory |
| HTTP 206 partial-content io.github.sadri-dridi/http-206 | 0 | Healthy | None | 31 | 698 ms | 2026-10-24T20:55:12.972Z | agents-and-memory |
| HTTP 301 moved-permanently io.github.sadri-dridi/http-301 | 0 | Healthy | None | 31 | 357 ms | 2026-10-24T20:55:12.972Z | agents-and-memory |
| HTTP 304 not-modified io.github.sadri-dridi/http-304 | 0 | Healthy | None | 31 | 303 ms | 2026-10-24T20:55:12.972Z | agents-and-memory |
| 32 hex chars io.github.sadri-dridi/hex-32 | 0 | Healthy | None | 31 | 535 ms | 2026-10-24T20:55:12.957Z | agents-and-memory |
| Hebrew month 1-13 band io.github.sadri-dridi/hebrew-mo | 0 | Healthy | None | 31 | 653 ms | 2026-10-24T20:55:12.930Z | agents-and-memory |
| HTTP 202 accepted io.github.sadri-dridi/http-202 | 0 | Healthy | None | 31 | 108 ms | 2026-10-24T20:55:12.930Z | agents-and-memory |
| HTTP 300 multiple-choices io.github.sadri-dridi/http-300 | 0 | Healthy | None | 31 | 109 ms | 2026-10-24T20:55:12.930Z | agents-and-memory |
| HTTP 102 processing io.github.sadri-dridi/http-102 | 0 | Healthy | None | 31 | 18 ms | 2026-10-24T20:55:12.881Z | agents-and-memory |
| BCP 47 lang attribute shape io.github.sadri-dridi/html-lang-ok | 0 | Healthy | None | 31 | 529 ms | 2026-10-24T20:55:12.783Z | agents-and-memory |
| HTTP 103 early-hints io.github.sadri-dridi/http-103 | 0 | Healthy | None | 31 | 98 ms | 2026-10-24T20:55:12.420Z | agents-and-memory |
| Hex encode, input discarded io.github.sadri-dridi/hex-ok | 0 | Healthy | None | 31 | 81 ms | 2026-10-24T20:55:12.381Z | agents-and-memory |
| HTTP 100 continue io.github.sadri-dridi/http-100 | 0 | Healthy | None | 31 | 58 ms | 2026-10-24T20:55:12.366Z | agents-and-memory |
| HTTP 200 ok io.github.sadri-dridi/http-200 | 0 | Healthy | None | 31 | 16 ms | 2026-10-24T20:55:12.284Z | agents-and-memory |
| Hostname shape, value discarded io.github.sadri-dridi/hostname-ok | 0 | Healthy | None | 31 | 30 ms | 2026-10-24T20:55:12.119Z | agents-and-memory |
| Mechanical horsepower to kW, number discarded io.github.sadri-dridi/hp-kw | 0 | Healthy | None | 31 | 61 ms | 2026-10-24T20:55:12.114Z | agents-and-memory |
| HTML escape length, text discarded io.github.sadri-dridi/html-escape-ok | 0 | Healthy | None | 31 | 649 ms | 2026-10-24T20:55:12.114Z | agents-and-memory |
| HTML tag count, markup discarded io.github.sadri-dridi/html-tag-count | 0 | Healthy | None | 31 | 60 ms | 2026-10-24T20:55:12.114Z | agents-and-memory |
| HQX run-length band, input discarded io.github.sadri-dridi/hqx-ok | 0 | Healthy | None | 31 | 60 ms | 2026-10-24T20:55:12.089Z | agents-and-memory |
| UTC hour io.github.sadri-dridi/hour-utc | 0 | Healthy | None | 31 | 25 ms | 2026-10-24T20:55:11.957Z | agents-and-memory |
| HTML numeric-entity count, input discarded io.github.sadri-dridi/html-numesc | 0 | Healthy | None | 31 | 40 ms | 2026-10-24T20:55:11.817Z | agents-and-memory |
| HSTS max-age band, value discarded io.github.sadri-dridi/hsts-ok | 0 | Healthy | None | 31 | 24 ms | 2026-10-24T20:55:11.808Z | agents-and-memory |
| hosts file token count, line discarded io.github.sadri-dridi/hosts-ok | 0 | Healthy | None | 31 | 26 ms | 2026-10-24T20:55:11.793Z | agents-and-memory |
| HMAC-SHA256 hex length, input discarded io.github.sadri-dridi/hmac-sha256 | 0 | Healthy | None | 31 | 321 ms | 2026-10-24T20:55:11.778Z | agents-and-memory |
| Hogsheads to liters, number discarded io.github.sadri-dridi/hogshead-l | 0 | Healthy | None | 31 | 17 ms | 2026-10-24T20:55:11.775Z | agents-and-memory |
| HTTP 101 switching-protocols io.github.sadri-dridi/http-101 | 0 | Healthy | None | 31 | 12 ms | 2026-10-24T20:55:11.771Z | agents-and-memory |
| HMAC-SHA256 hex length, input discarded io.github.sadri-dridi/hmac256-len | 0 | Healthy | None | 31 | 858 ms | 2026-10-24T20:55:11.769Z | agents-and-memory |
| HMAC-SHA1 hex length, input discarded io.github.sadri-dridi/hmac1-len | 0 | Healthy | None | 31 | 22 ms | 2026-10-24T20:55:11.748Z | agents-and-memory |
| Hours to seconds io.github.sadri-dridi/hr-to-sec | 0 | Healthy | None | 31 | 23 ms | 2026-10-24T20:55:11.746Z | agents-and-memory |
| Hjson comment shape, body discarded io.github.sadri-dridi/hjson-ok | 0 | Healthy | None | 31 | 134 ms | 2026-10-24T20:55:11.556Z | agents-and-memory |
| html lang attribute shape, markup discarded io.github.sadri-dridi/htmllang-ok | 0 | Healthy | None | 31 | 141 ms | 2026-10-24T20:55:11.552Z | agents-and-memory |
| HTML meta tag count, markup discarded io.github.sadri-dridi/html-meta-n | 0 | Healthy | None | 31 | 627 ms | 2026-10-24T20:55:11.551Z | agents-and-memory |
| HN Front Count io.github.sadri-dridi/hn-front-count | 0 | Healthy | None | 31 | 626 ms | 2026-10-24T20:55:11.548Z | agents-and-memory |
| HSL tuple shape io.github.sadri-dridi/hsl-ok | 0 | Healthy | None | 31 | 532 ms | 2026-10-24T20:55:11.458Z | agents-and-memory |
| HTML script tag count, markup discarded io.github.sadri-dridi/html-script-n | 0 | Healthy | None | 31 | 321 ms | 2026-10-24T20:55:11.287Z | agents-and-memory |
| UTC hour 0-23 band io.github.sadri-dridi/hour-ok | 0 | Healthy | None | 31 | 328 ms | 2026-10-24T20:55:11.281Z | agents-and-memory |
| HTML entity count, markup discarded io.github.sadri-dridi/html-entities-ok | 0 | Healthy | None | 31 | 320 ms | 2026-10-24T20:55:11.279Z | agents-and-memory |
| HKDF-SHA256 output length, input discarded io.github.sadri-dridi/hkdf-len | 0 | Healthy | None | 31 | 326 ms | 2026-10-24T20:55:11.273Z | agents-and-memory |
| Hostname shape, value discarded io.github.sadri-dridi/host-ok | 0 | Healthy | None | 31 | 326 ms | 2026-10-24T20:55:11.273Z | agents-and-memory |
| host:port shape, value discarded io.github.sadri-dridi/host-port-ok | 0 | Healthy | None | 31 | 319 ms | 2026-10-24T20:55:11.251Z | agents-and-memory |
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