We track 49421 servers from the official MCP Registry. 32541 are hosted (remote); we have health-checked 32263 so far. 287 use templated URLs that need user-specific values and can't be checked. Of those checked, 17700 passed a full MCP handshake, 9025 are up but need credentials, and 5538 failed or were unreachable (last check 2026-10-24T06:20:21.301Z UTC). How we check.
| Server | Users (30 d) | Handshake | Auth | Tools | Latency | Last checked (UTC) | Category |
|---|---|---|---|---|---|---|---|
| shortid charset, value discarded io.github.sadri-dridi/shortid-ok | 0 | Healthy | None | 31 | 106 ms | 2026-10-23T10:50:13.665Z | agents-and-memory |
| Shots to milliliters, number discarded io.github.sadri-dridi/shot-ml | 0 | Healthy | None | 31 | 111 ms | 2026-10-23T10:50:13.622Z | agents-and-memory |
| shortuuid hex charset, value discarded io.github.sadri-dridi/shortuuid-hex | 0 | Healthy | None | 31 | 78 ms | 2026-10-23T10:50:13.235Z | agents-and-memory |
| POSIX shell quote shape, input discarded io.github.sadri-dridi/shell-esc | 0 | Healthy | None | 31 | 49 ms | 2026-10-23T10:50:13.212Z | developer-tools |
| SHA-224 hex length, input discarded io.github.sadri-dridi/sha224-len | 0 | Healthy | None | 31 | 48 ms | 2026-10-23T10:50:13.106Z | agents-and-memory |
| SHA-256 hex length, input discarded io.github.sadri-dridi/sha256-len | 0 | Healthy | None | 31 | 24 ms | 2026-10-23T10:50:12.867Z | agents-and-memory |
| Whether UTC second can be 60 io.github.sadri-dridi/sec-leap | 0 | Healthy | None | 31 | 20 ms | 2026-10-23T10:50:12.834Z | agents-and-memory |
| SHA-512 hex length, input discarded io.github.sadri-dridi/sha512-len | 0 | Healthy | None | 31 | 16 ms | 2026-10-23T10:50:12.809Z | agents-and-memory |
| SHA-512 hex length, input discarded io.github.sadri-dridi/sha512-ok | 0 | Healthy | None | 31 | 25 ms | 2026-10-23T10:50:12.793Z | agents-and-memory |
| S-expression paren count, body discarded io.github.sadri-dridi/sexp-ok | 0 | Healthy | None | 31 | 22 ms | 2026-10-23T10:50:12.784Z | agents-and-memory |
| SHA-224 hex length, input discarded io.github.sadri-dridi/sha224-ok | 0 | Healthy | None | 31 | 639 ms | 2026-10-23T10:50:12.777Z | agents-and-memory |
| Shebang interpreter token, line discarded io.github.sadri-dridi/shebang-ok | 0 | Healthy | None | 31 | 32 ms | 2026-10-23T10:50:12.774Z | agents-and-memory |
| Set-Cookie attribute count, values discarded io.github.sadri-dridi/set-cookie | 0 | Healthy | None | 31 | 1253 ms | 2026-10-23T10:50:12.768Z | agents-and-memory |
| SHAKE128 hex length, input discarded io.github.sadri-dridi/shake128 | 0 | Healthy | None | 31 | 588 ms | 2026-10-23T10:50:12.756Z | agents-and-memory |
| SHA-1, input discarded io.github.sadri-dridi/sha1-ok | 0 | Healthy | None | 31 | 1230 ms | 2026-10-23T10:50:12.748Z | agents-and-memory |
| monotonic sequence digit band, value discarded io.github.sadri-dridi/seq-ok | 0 | Healthy | None | 31 | 27 ms | 2026-10-23T10:50:12.732Z | agents-and-memory |
| SHAKE256 hex length band, input discarded io.github.sadri-dridi/shake256-ok | 0 | Healthy | None | 31 | 27 ms | 2026-10-23T10:50:12.725Z | agents-and-memory |
| SHAKE256 hex length, input discarded io.github.sadri-dridi/shake256 | 0 | Healthy | None | 31 | 32 ms | 2026-10-23T10:50:12.693Z | agents-and-memory |
| SHA-256, input discarded io.github.sadri-dridi/sha256-ok | 0 | Healthy | None | 31 | 29 ms | 2026-10-23T10:50:12.628Z | agents-and-memory |
| Sentry DSN Shape io.github.sadri-dridi/sentry-dsn-shape | 0 | Healthy | None | 31 | 1076 ms | 2026-10-23T10:50:12.596Z | developer-tools |
| SHAKE128 hex length band, input discarded io.github.sadri-dridi/shake128-ok | 0 | Healthy | None | 31 | 30 ms | 2026-10-23T10:50:12.586Z | agents-and-memory |
| SHA-1 hex length, input discarded io.github.sadri-dridi/sha1-len | 0 | Healthy | None | 31 | 247 ms | 2026-10-23T10:50:12.424Z | agents-and-memory |
| SHACL NodeShape count, body discarded io.github.sadri-dridi/shacl-ok | 0 | Healthy | None | 31 | 697 ms | 2026-10-23T10:50:12.388Z | agents-and-memory |
| SHA-3 hex length, input discarded io.github.sadri-dridi/sha3-ok | 0 | Healthy | None | 31 | 670 ms | 2026-10-23T10:50:12.360Z | agents-and-memory |
| SHA3-384 hex length, input discarded io.github.sadri-dridi/sha3-384 | 0 | Healthy | None | 31 | 613 ms | 2026-10-23T10:50:12.352Z | agents-and-memory |
| SHA3-512 hex length, input discarded io.github.sadri-dridi/sha3-512 | 0 | Healthy | None | 31 | 44 ms | 2026-10-23T10:50:12.343Z | agents-and-memory |
| Server product-token count, value discarded io.github.sadri-dridi/server-ok | 0 | Healthy | None | 31 | 505 ms | 2026-10-23T10:50:12.231Z | agents-and-memory |
| SHA-384 hex length, input discarded io.github.sadri-dridi/sha384-len | 0 | Healthy | None | 31 | 513 ms | 2026-10-23T10:50:12.231Z | agents-and-memory |
| SHA-384 hex length, input discarded io.github.sadri-dridi/sha384-ok | 0 | Healthy | None | 31 | 429 ms | 2026-10-23T10:50:12.231Z | agents-and-memory |
| sentence-terminator count, text discarded io.github.sadri-dridi/sent-n | 0 | Healthy | None | 31 | 53 ms | 2026-10-23T10:50:12.151Z | agents-and-memory |
| sentence-start cap count, text discarded io.github.sadri-dridi/sentence-n | 0 | Healthy | None | 31 | 436 ms | 2026-10-23T10:50:12.151Z | agents-and-memory |
| semicolon token count, value discarded io.github.sadri-dridi/semi-seg | 0 | Healthy | None | 31 | 423 ms | 2026-10-23T10:50:12.104Z | agents-and-memory |
| Sentence count, text discarded io.github.sadri-dridi/sentence-count | 0 | Healthy | None | 31 | 378 ms | 2026-10-23T10:50:11.946Z | agents-and-memory |
| SHA3-256 hex length, input discarded io.github.sadri-dridi/sha3-256 | 0 | Healthy | None | 31 | 340 ms | 2026-10-23T10:50:11.920Z | agents-and-memory |
| SemVer range operators, value discarded io.github.sadri-dridi/semver-range-ok | 0 | Healthy | None | 31 | 1582 ms | 2026-10-23T10:50:11.001Z | agents-and-memory |
| reStructuredText directive count, body discarded io.github.sadri-dridi/rst-ok | 0 | Healthy | None | 31 | 1559 ms | 2026-10-23T10:50:10.998Z | agents-and-memory |
| SHA3-224 hex length, input discarded io.github.sadri-dridi/sha3-224 | 0 | Healthy | None | 31 | 154 ms | 2026-10-23T10:50:10.998Z | agents-and-memory |
| sentence-terminator charset, value discarded io.github.sadri-dridi/sent-ok | 0 | Healthy | None | 31 | 1502 ms | 2026-10-23T10:50:10.996Z | agents-and-memory |
| UTC second io.github.sadri-dridi/second-utc | 0 | Healthy | None | 31 | 1876 ms | 2026-10-23T10:50:10.993Z | agents-and-memory |
| semicolon-separated token count, value discarded io.github.sadri-dridi/semi-n | 0 | Healthy | None | 31 | 1804 ms | 2026-10-23T10:50:10.993Z | agents-and-memory |
| SemVer shape io.github.sadri-dridi/semver-ok | 0 | Healthy | None | 31 | 1780 ms | 2026-10-23T10:50:10.993Z | agents-and-memory |
| Sentence-case first-cap shape, value discarded io.github.sadri-dridi/sentence-ok | 0 | Healthy | None | 31 | 1568 ms | 2026-10-23T10:50:10.988Z | agents-and-memory |
| scrypt hex length, input discarded io.github.sadri-dridi/scrypt-len | 0 | Healthy | None | 31 | 1997 ms | 2026-10-23T10:50:10.985Z | agents-and-memory |
| sentence count, text discarded io.github.sadri-dridi/sent-ok2 | 0 | Healthy | None | 31 | 1911 ms | 2026-10-23T10:50:10.983Z | agents-and-memory |
| SCSU BOM presence, input discarded io.github.sadri-dridi/scsu-sig | 0 | Healthy | None | 31 | 1974 ms | 2026-10-23T10:50:10.978Z | agents-and-memory |
| UTC second 0-60 band io.github.sadri-dridi/sec-utc | 0 | Healthy | None | 31 | 2006 ms | 2026-10-23T10:50:10.978Z | agents-and-memory |
| SemVer numbers only io.github.sadri-dridi/semver-parse | 0 | Healthy | None | 31 | 1942 ms | 2026-10-23T10:50:10.978Z | agents-and-memory |
| Seconds to minutes io.github.sadri-dridi/sec-to-min | 0 | Healthy | None | 31 | 1948 ms | 2026-10-23T10:50:10.974Z | agents-and-memory |
| UTC second 0-60 band io.github.sadri-dridi/sec-ok | 0 | Healthy | None | 31 | 65 ms | 2026-10-23T10:45:14.076Z | agents-and-memory |
| Search Query Length io.github.sadri-dridi/search-query-len | 0 | Healthy | None | 31 | 43 ms | 2026-10-23T10:45:14.067Z | agents-and-memory |
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