We track 52412 servers from the official MCP Registry. 34671 are hosted (remote); we have health-checked 34377 so far. 304 use templated URLs that need user-specific values and can't be checked. Of those checked, 20576 passed a full MCP handshake, 9867 are up but need credentials, and 3934 failed or were unreachable (last check 2026-10-29T05:55:27.083Z UTC). How we check.
| Server | Users (30 d) | Handshake | Auth | Tools | Latency | Last checked (UTC) | Category |
|---|---|---|---|---|---|---|---|
| SQL single-quote escape count, input discarded io.github.sadri-dridi/sql-esc | 0 | Healthy | None | 31 | 48 ms | 2026-10-27T21:40:11.309Z | data-and-databases |
| Snowflake id shape io.github.sadri-dridi/snowflake-shape | 0 | Healthy | None | 31 | 38 ms | 2026-10-27T21:40:11.203Z | data-and-databases |
| Sonyflake timestamp bits, value discarded io.github.sadri-dridi/sonyflake-ts | 0 | Healthy | None | 31 | 21 ms | 2026-10-27T21:40:10.736Z | agents-and-memory |
| Snowflake timestamp bits, value discarded io.github.sadri-dridi/snowflake-ts2 | 0 | Healthy | None | 31 | 15 ms | 2026-10-27T21:40:10.725Z | data-and-databases |
| UK sort-code hyphenated shape, value discarded io.github.sadri-dridi/sort-hyphen | 0 | Healthy | None | 31 | 22 ms | 2026-10-27T21:40:10.492Z | agents-and-memory |
| SPDX license expression tokens, value discarded io.github.sadri-dridi/spdx-expr-ok | 0 | Healthy | None | 31 | 22 ms | 2026-10-27T21:40:10.485Z | agents-and-memory |
| snake_case segment count, value discarded io.github.sadri-dridi/snake-seg | 0 | Healthy | None | 31 | 53 ms | 2026-10-27T21:40:10.429Z | agents-and-memory |
| SOAP Envelope shape, markup discarded io.github.sadri-dridi/soap-ok | 0 | Healthy | None | 31 | 53 ms | 2026-10-27T21:40:10.428Z | agents-and-memory |
| slash-separated charset, value discarded io.github.sadri-dridi/slash-ok | 0 | Healthy | None | 31 | 55 ms | 2026-10-27T21:40:10.412Z | agents-and-memory |
| snake_case shape, text discarded io.github.sadri-dridi/snake-ok | 0 | Healthy | None | 31 | 75 ms | 2026-10-27T21:40:10.412Z | agents-and-memory |
| SNI hostname shape, value discarded io.github.sadri-dridi/sni-ok | 0 | Healthy | None | 31 | 56 ms | 2026-10-27T21:40:10.412Z | agents-and-memory |
| Snowflake 63-bit digit shape, value discarded io.github.sadri-dridi/snowflake-ok | 0 | Healthy | None | 31 | 56 ms | 2026-10-27T21:40:10.412Z | data-and-databases |
| Snowflake sequence bits, id discarded io.github.sadri-dridi/snowflake-seq | 0 | Healthy | None | 31 | 56 ms | 2026-10-27T21:40:10.412Z | data-and-databases |
| Sonyflake digit shape, value discarded io.github.sadri-dridi/sonyflake-ok | 0 | Healthy | None | 31 | 56 ms | 2026-10-27T21:40:10.412Z | agents-and-memory |
| Short-UUID charset, value discarded io.github.sadri-dridi/shortuuid-ok | 0 | Healthy | None | 31 | 57 ms | 2026-10-27T21:40:10.409Z | agents-and-memory |
| slash-separated token count, value discarded io.github.sadri-dridi/slash-n | 0 | Healthy | None | 31 | 48 ms | 2026-10-27T21:40:10.409Z | agents-and-memory |
| SM3 hex length, input discarded io.github.sadri-dridi/sm3-len | 0 | Healthy | None | 31 | 54 ms | 2026-10-27T21:40:10.409Z | agents-and-memory |
| S/MIME PKCS7 fence, body discarded io.github.sadri-dridi/smime-ok | 0 | Healthy | None | 31 | 48 ms | 2026-10-27T21:40:10.409Z | agents-and-memory |
| Slug character check io.github.sadri-dridi/slug-ok | 0 | Healthy | None | 31 | 57 ms | 2026-10-27T21:40:10.375Z | agents-and-memory |
| snake_case segment count, value discarded io.github.sadri-dridi/snake-n | 0 | Healthy | None | 31 | 48 ms | 2026-10-27T21:40:10.375Z | agents-and-memory |
| Smile binary header, bytes discarded io.github.sadri-dridi/smile-ok | 0 | Healthy | None | 31 | 27 ms | 2026-10-27T21:40:10.306Z | agents-and-memory |
| Slack channel name shape, value discarded io.github.sadri-dridi/slack-channel-ok | 0 | Healthy | None | 31 | 24 ms | 2026-10-27T21:40:10.301Z | communication |
| SHA-256 hex length, input discarded io.github.sadri-dridi/sha256-len | 0 | Healthy | None | 31 | 916 ms | 2026-10-27T21:40:09.990Z | agents-and-memory |
| SHA-3 hex length, input discarded io.github.sadri-dridi/sha3-ok | 0 | Healthy | None | 31 | 845 ms | 2026-10-27T21:40:09.990Z | agents-and-memory |
| SHA-384 hex length, input discarded io.github.sadri-dridi/sha384-ok | 0 | Healthy | None | 31 | 528 ms | 2026-10-27T21:40:09.857Z | agents-and-memory |
| Slugs to kilograms, number discarded io.github.sadri-dridi/slug-kg | 0 | Healthy | None | 31 | 50 ms | 2026-10-27T21:40:09.838Z | agents-and-memory |
| Slack Webhook Shape io.github.sadri-dridi/slack-webhook-shape | 0 | Healthy | None | 31 | 45 ms | 2026-10-27T21:40:09.836Z | communication |
| SM3 hex length, input discarded io.github.sadri-dridi/sm3-ok | 0 | Healthy | None | 31 | 47 ms | 2026-10-27T21:40:09.835Z | agents-and-memory |
| short-uuid sid charset, value discarded io.github.sadri-dridi/sid-ok | 0 | Healthy | None | 31 | 47 ms | 2026-10-27T21:40:09.834Z | agents-and-memory |
| Sitemap URL count, body discarded io.github.sadri-dridi/sitemap-url-count | 0 | Healthy | None | 31 | 42 ms | 2026-10-27T21:40:09.832Z | agents-and-memory |
| Smidgens to milliliters, number discarded io.github.sadri-dridi/smidgen-ml | 0 | Healthy | None | 31 | 42 ms | 2026-10-27T21:40:09.829Z | agents-and-memory |
| sidereal day fraction band io.github.sadri-dridi/sidereal-ok | 0 | Healthy | None | 31 | 37 ms | 2026-10-27T21:40:09.828Z | agents-and-memory |
| SipHash-4-8 hex length, input discarded io.github.sadri-dridi/sip128 | 0 | Healthy | None | 31 | 37 ms | 2026-10-27T21:40:09.825Z | agents-and-memory |
| Shots to milliliters, number discarded io.github.sadri-dridi/shot-ml | 0 | Healthy | None | 31 | 30 ms | 2026-10-27T21:40:09.819Z | agents-and-memory |
| Approximate sidereal hour band io.github.sadri-dridi/sidereal-hr | 0 | Healthy | None | 31 | 29 ms | 2026-10-27T21:40:09.817Z | agents-and-memory |
| SipHash hex length, input discarded io.github.sadri-dridi/siphash-len | 0 | Healthy | None | 31 | 24 ms | 2026-10-27T21:40:09.810Z | agents-and-memory |
| Shift_JIS lead-byte band, input discarded io.github.sadri-dridi/shiftjis-ok | 0 | Healthy | None | 31 | 16 ms | 2026-10-27T21:40:09.807Z | agents-and-memory |
| POSIX shell quote shape, input discarded io.github.sadri-dridi/shell-esc | 0 | Healthy | None | 31 | 16 ms | 2026-10-27T21:40:09.806Z | developer-tools |
| SipHash-2-4 hex length, input discarded io.github.sadri-dridi/sip64-len | 0 | Healthy | None | 31 | 1124 ms | 2026-10-27T21:40:09.560Z | agents-and-memory |
| SipHash hex length, input discarded io.github.sadri-dridi/siphash-ok | 0 | Healthy | None | 31 | 579 ms | 2026-10-27T21:40:09.311Z | agents-and-memory |
| Whether UTC second can be 60 io.github.sadri-dridi/sec-leap | 0 | Healthy | None | 31 | 557 ms | 2026-10-27T21:40:09.278Z | agents-and-memory |
| SHAKE128 hex length band, input discarded io.github.sadri-dridi/shake128-ok | 0 | Healthy | None | 31 | 538 ms | 2026-10-27T21:40:09.272Z | agents-and-memory |
| shortid charset, value discarded io.github.sadri-dridi/shortid-ok | 0 | Healthy | None | 31 | 772 ms | 2026-10-27T21:40:09.272Z | agents-and-memory |
| SHA-224 hex length, input discarded io.github.sadri-dridi/sha224-len | 0 | Healthy | None | 31 | 881 ms | 2026-10-27T21:40:09.269Z | agents-and-memory |
| Shebang interpreter token, line discarded io.github.sadri-dridi/shebang-ok | 0 | Healthy | None | 31 | 838 ms | 2026-10-27T21:40:09.269Z | agents-and-memory |
| shortuuid hex charset, value discarded io.github.sadri-dridi/shortuuid-hex | 0 | Healthy | None | 31 | 837 ms | 2026-10-27T21:40:09.269Z | agents-and-memory |
| Set-Cookie attribute count, values discarded io.github.sadri-dridi/set-cookie | 0 | Healthy | None | 31 | 12 ms | 2026-10-27T21:40:09.227Z | agents-and-memory |
| S-expression paren count, body discarded io.github.sadri-dridi/sexp-ok | 0 | Healthy | None | 31 | 19 ms | 2026-10-27T21:40:09.227Z | agents-and-memory |
| SHA-1, input discarded io.github.sadri-dridi/sha1-ok | 0 | Healthy | None | 31 | 21 ms | 2026-10-27T21:40:09.227Z | agents-and-memory |
| SHA-224 hex length, input discarded io.github.sadri-dridi/sha224-ok | 0 | Healthy | None | 31 | 20 ms | 2026-10-27T21:40:09.227Z | agents-and-memory |
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