We track 47362 servers from the official MCP Registry. 30880 are hosted (remote); we have health-checked 30613 so far. 273 use templated URLs that need user-specific values and can't be checked. Of those checked, 16825 passed a full MCP handshake, 8433 are up but need credentials, and 5355 failed or were unreachable (last check 2026-10-21T00:06:09.852Z UTC). How we check.
| Server | Users (30 d) | Handshake | Auth | Tools | Latency | Last checked (UTC) | Category |
|---|---|---|---|---|---|---|---|
| HTTP 413 payload-too-large io.github.sadri-dridi/http-413 | 0 | Healthy | None | 31 | 24 ms | 2026-10-20T14:20:58.901Z | agents-and-memory |
| HTTP 414 uri-too-long io.github.sadri-dridi/http-414 | 0 | Healthy | None | 31 | 38 ms | 2026-10-20T14:20:58.505Z | agents-and-memory |
| HTTP 403 forbidden io.github.sadri-dridi/http-403 | 0 | Healthy | None | 31 | 46 ms | 2026-10-20T14:20:58.347Z | agents-and-memory |
| HTTP 408 request-timeout io.github.sadri-dridi/http-408 | 0 | Healthy | None | 31 | 462 ms | 2026-10-20T14:20:58.345Z | agents-and-memory |
| HTTP 401 unauthorized io.github.sadri-dridi/http-401 | 0 | Healthy | None | 31 | 106 ms | 2026-10-20T14:20:58.342Z | agents-and-memory |
| HTTP 412 precondition-failed io.github.sadri-dridi/http-412 | 0 | Healthy | None | 31 | 67 ms | 2026-10-20T14:20:58.342Z | agents-and-memory |
| HTTP 400 bad-request io.github.sadri-dridi/http-400 | 0 | Healthy | None | 31 | 328 ms | 2026-10-20T14:20:58.335Z | agents-and-memory |
| HTTP 405 method-not-allowed io.github.sadri-dridi/http-405 | 0 | Healthy | None | 31 | 289 ms | 2026-10-20T14:20:58.335Z | agents-and-memory |
| HTTP 404 not-found io.github.sadri-dridi/http-404 | 0 | Healthy | None | 31 | 354 ms | 2026-10-20T14:20:58.334Z | agents-and-memory |
| HTTP 302 found io.github.sadri-dridi/http-302 | 0 | Healthy | None | 31 | 462 ms | 2026-10-20T14:20:58.330Z | agents-and-memory |
| HTTP 304 not-modified io.github.sadri-dridi/http-304 | 0 | Healthy | None | 31 | 422 ms | 2026-10-20T14:20:58.330Z | agents-and-memory |
| HTTP 204 no-content io.github.sadri-dridi/http-204 | 0 | Healthy | None | 31 | 508 ms | 2026-10-20T14:20:58.323Z | agents-and-memory |
| HTTP 303 see-other io.github.sadri-dridi/http-303 | 0 | Healthy | None | 31 | 508 ms | 2026-10-20T14:20:58.322Z | agents-and-memory |
| HTTP 301 moved-permanently io.github.sadri-dridi/http-301 | 0 | Healthy | None | 31 | 548 ms | 2026-10-20T14:20:58.317Z | agents-and-memory |
| HTTP 201 created io.github.sadri-dridi/http-201 | 0 | Healthy | None | 31 | 586 ms | 2026-10-20T14:20:58.310Z | agents-and-memory |
| HTTP 100 continue io.github.sadri-dridi/http-100 | 0 | Healthy | None | 31 | 67 ms | 2026-10-20T14:16:04.622Z | agents-and-memory |
| Hex encode, input discarded io.github.sadri-dridi/hex-ok | 0 | Healthy | None | 31 | 42 ms | 2026-10-20T14:16:04.611Z | agents-and-memory |
| HTTP 300 multiple-choices io.github.sadri-dridi/http-300 | 0 | Healthy | None | 31 | 55 ms | 2026-10-20T14:16:04.611Z | agents-and-memory |
| HTTP 103 early-hints io.github.sadri-dridi/http-103 | 0 | Healthy | None | 31 | 53 ms | 2026-10-20T14:16:04.609Z | agents-and-memory |
| HTTP 200 ok io.github.sadri-dridi/http-200 | 0 | Healthy | None | 31 | 42 ms | 2026-10-20T14:16:04.598Z | agents-and-memory |
| HTTP 202 accepted io.github.sadri-dridi/http-202 | 0 | Healthy | None | 31 | 26 ms | 2026-10-20T14:16:04.586Z | agents-and-memory |
| 32 hex chars io.github.sadri-dridi/hex-32 | 0 | Healthy | None | 31 | 33 ms | 2026-10-20T14:16:04.571Z | agents-and-memory |
| Hebrew month 1-13 band io.github.sadri-dridi/hebrew-mo | 0 | Healthy | None | 31 | 24 ms | 2026-10-20T14:16:04.562Z | agents-and-memory |
| HTTP 206 partial-content io.github.sadri-dridi/http-206 | 0 | Healthy | None | 31 | 24 ms | 2026-10-20T14:16:04.562Z | agents-and-memory |
| HTTP 102 processing io.github.sadri-dridi/http-102 | 0 | Healthy | None | 31 | 25 ms | 2026-10-20T14:16:04.541Z | agents-and-memory |
| HQX run-length band, input discarded io.github.sadri-dridi/hqx-ok | 0 | Healthy | None | 31 | 88 ms | 2026-10-20T14:16:04.348Z | agents-and-memory |
| Hostname shape, value discarded io.github.sadri-dridi/hostname-ok | 0 | Healthy | None | 31 | 88 ms | 2026-10-20T14:16:04.344Z | agents-and-memory |
| Horsepower to watts io.github.sadri-dridi/hp-to-watt | 0 | Healthy | None | 31 | 68 ms | 2026-10-20T14:16:04.333Z | agents-and-memory |
| UTC hour io.github.sadri-dridi/hour-utc | 0 | Healthy | None | 31 | 51 ms | 2026-10-20T14:16:04.309Z | agents-and-memory |
| hosts file token count, line discarded io.github.sadri-dridi/hosts-ok | 0 | Healthy | None | 31 | 529 ms | 2026-10-20T14:16:04.214Z | agents-and-memory |
| HSTS max-age band, value discarded io.github.sadri-dridi/hsts-ok | 0 | Healthy | None | 31 | 507 ms | 2026-10-20T14:16:04.084Z | agents-and-memory |
| HTML tag count, markup discarded io.github.sadri-dridi/html-tag-count | 0 | Healthy | None | 31 | 289 ms | 2026-10-20T14:16:04.064Z | agents-and-memory |
| HTTP 101 switching-protocols io.github.sadri-dridi/http-101 | 0 | Healthy | None | 31 | 327 ms | 2026-10-20T14:16:04.064Z | agents-and-memory |
| HTML script tag count, markup discarded io.github.sadri-dridi/html-script-n | 0 | Healthy | None | 31 | 325 ms | 2026-10-20T14:16:04.061Z | agents-and-memory |
| html lang attribute shape, markup discarded io.github.sadri-dridi/htmllang-ok | 0 | Healthy | None | 31 | 239 ms | 2026-10-20T14:16:04.061Z | agents-and-memory |
| HTML h1 count, markup discarded io.github.sadri-dridi/html-h1-n | 0 | Healthy | None | 31 | 312 ms | 2026-10-20T14:16:04.055Z | agents-and-memory |
| BCP 47 lang attribute shape io.github.sadri-dridi/html-lang-ok | 0 | Healthy | None | 31 | 317 ms | 2026-10-20T14:16:04.055Z | agents-and-memory |
| HTML meta tag count, markup discarded io.github.sadri-dridi/html-meta-n | 0 | Healthy | None | 31 | 296 ms | 2026-10-20T14:16:04.055Z | agents-and-memory |
| Mechanical horsepower to kW, number discarded io.github.sadri-dridi/hp-kw | 0 | Healthy | None | 31 | 312 ms | 2026-10-20T14:16:04.049Z | agents-and-memory |
| HTML escape length, text discarded io.github.sadri-dridi/html-escape-ok | 0 | Healthy | None | 31 | 312 ms | 2026-10-20T14:16:04.043Z | agents-and-memory |
| HTML numeric-entity count, input discarded io.github.sadri-dridi/html-numesc | 0 | Healthy | None | 31 | 307 ms | 2026-10-20T14:16:04.043Z | agents-and-memory |
| Hjson comment shape, body discarded io.github.sadri-dridi/hjson-ok | 0 | Healthy | None | 31 | 779 ms | 2026-10-20T14:16:04.002Z | agents-and-memory |
| Hogsheads to liters, number discarded io.github.sadri-dridi/hogshead-l | 0 | Healthy | None | 31 | 838 ms | 2026-10-20T14:16:04.002Z | agents-and-memory |
| Hours to seconds io.github.sadri-dridi/hr-to-sec | 0 | Healthy | None | 31 | 418 ms | 2026-10-20T14:16:04.002Z | agents-and-memory |
| HMAC-SHA1 hex length, input discarded io.github.sadri-dridi/hmac1-len | 0 | Healthy | None | 31 | 51 ms | 2026-10-20T14:16:03.912Z | agents-and-memory |
| HTML entity count, markup discarded io.github.sadri-dridi/html-entities-ok | 0 | Healthy | None | 31 | 30 ms | 2026-10-20T14:16:03.631Z | agents-and-memory |
| HSL tuple shape io.github.sadri-dridi/hsl-ok | 0 | Healthy | None | 31 | 23 ms | 2026-10-20T14:16:03.567Z | agents-and-memory |
| HMAC-SHA256 hex length, input discarded io.github.sadri-dridi/hmac256-len | 0 | Healthy | None | 31 | 57 ms | 2026-10-20T14:16:03.237Z | agents-and-memory |
| HN Front Count io.github.sadri-dridi/hn-front-count | 0 | Healthy | None | 31 | 67 ms | 2026-10-20T14:16:03.237Z | agents-and-memory |
| UTC hour 0-23 band io.github.sadri-dridi/hour-ok | 0 | Healthy | None | 31 | 56 ms | 2026-10-20T14:16:03.225Z | agents-and-memory |
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