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The MCP registry, with every server's tools checked
Every remote server the official MCP registry lists with a public endpoint, read the way an MCP client reads it and checked for tool poisoning. Each server is read again every week. We never call a tool.
26,226 servers listed. 6,905 read so far: 61% listed their tools to anyone (73,724 tools in all), 29% wanted credentials first, 11% could not be read. Our rules matched something on 5.
The index reads servers in the background, never-read first; 19321 are still in the queue.
| Pacific/Honolulu clock io.github.sadri-dridi/tz-pacific-honolulu | 31 tools, nothing matched 2026-10-22 |
| Pacific/Kiritimati clock io.github.sadri-dridi/tz-pacific-kiritimati | 31 tools, nothing matched 2026-10-22 |
| Pacific/Majuro clock io.github.sadri-dridi/tz-pacific-majuro | 31 tools, nothing matched 2026-10-22 |
| Pacific/Midway clock io.github.sadri-dridi/tz-pacific-midway | 31 tools, nothing matched 2026-10-22 |
| Pacific/Norfolk clock io.github.sadri-dridi/tz-pacific-norfolk | 31 tools, nothing matched 2026-10-22 |
| Pacific/Noumea clock io.github.sadri-dridi/tz-pacific-noumea | 31 tools, nothing matched 2026-10-22 |
| Pacific/Pago_Pago clock io.github.sadri-dridi/tz-pacific-pago-pago | 31 tools, nothing matched 2026-10-22 |
| Pacific/Palau clock io.github.sadri-dridi/tz-pacific-palau | 31 tools, nothing matched 2026-10-22 |
| Pacific/Port_Moresby clock io.github.sadri-dridi/tz-pacific-port-moresby | 31 tools, nothing matched 2026-10-22 |
| Pacific/Tahiti clock io.github.sadri-dridi/tz-pacific-tahiti | 31 tools, nothing matched 2026-10-22 |
| Pacific/Tongatapu clock io.github.sadri-dridi/tz-pacific-tongatapu | 31 tools, nothing matched 2026-10-22 |
| UTC clock io.github.sadri-dridi/tz-utc | 31 tools, nothing matched 2026-10-22 |
| User-Agent length, value discarded io.github.sadri-dridi/ua-len | 31 tools, nothing matched 2026-10-22 |
| Micrograms to grams, number discarded io.github.sadri-dridi/ug-g | 31 tools, nothing matched 2026-10-22 |
| Micrograms to milligrams, number discarded io.github.sadri-dridi/ug-mg | 31 tools, nothing matched 2026-10-22 |
| UK postcode outward shape, value discarded io.github.sadri-dridi/uk-postcode | 31 tools, nothing matched 2026-10-22 |
| ULID charset and length, value discarded io.github.sadri-dridi/ulid-check | 31 tools, nothing matched 2026-10-22 |
| Crockford Base32 ULID shape, value discarded io.github.sadri-dridi/ulid-crock | 31 tools, nothing matched 2026-10-22 |
| ULID Crockford no-hyphen, value discarded io.github.sadri-dridi/ulid-crock2 | 31 tools, nothing matched 2026-10-22 |
| ULID Crockford charset io.github.sadri-dridi/ulid-crockford | 31 tools, nothing matched 2026-10-22 |
| ULID character length io.github.sadri-dridi/ulid-len | 31 tools, nothing matched 2026-10-22 |
| ULID monotonic counter bits, value discarded io.github.sadri-dridi/ulid-mod | 31 tools, nothing matched 2026-10-22 |
| ULID millisecond prefix, value discarded io.github.sadri-dridi/ulid-ms | 31 tools, nothing matched 2026-10-22 |
| Time-sortable id shape io.github.sadri-dridi/ulid-now | 31 tools, nothing matched 2026-10-22 |
| ULID 26-char Crockford shape, value discarded io.github.sadri-dridi/ulid-ok | 31 tools, nothing matched 2026-10-22 |
| ULID shape check io.github.sadri-dridi/ulid-shape | 31 tools, nothing matched 2026-10-22 |
| ULID 48-bit time prefix, value discarded io.github.sadri-dridi/ulid-time | 31 tools, nothing matched 2026-10-22 |
| Microliters to liters, number discarded io.github.sadri-dridi/ul-l | 31 tools, nothing matched 2026-10-22 |
| Microliters to milliliters, number discarded io.github.sadri-dridi/ul-ml | 31 tools, nothing matched 2026-10-22 |
| UML XMI packagedElement count, markup discarded io.github.sadri-dridi/uml-ok | 31 tools, nothing matched 2026-10-22 |
| Micrometers to millimeters, number discarded io.github.sadri-dridi/um-mm | 31 tools, nothing matched 2026-10-22 |
| Unicode code-point length, text discarded io.github.sadri-dridi/unicode-len | 31 tools, nothing matched 2026-10-22 |
| systemd unit section count, body discarded io.github.sadri-dridi/unitfile-ok | 31 tools, nothing matched 2026-10-22 |
| Unix day number io.github.sadri-dridi/unix-day | 31 tools, nothing matched 2026-10-22 |
| Unix day-of-year from seconds io.github.sadri-dridi/unix-doy | 31 tools, nothing matched 2026-10-22 |
| Unix hour number io.github.sadri-dridi/unix-hour | 31 tools, nothing matched 2026-10-22 |
| Current UTC hour from unix seconds io.github.sadri-dridi/unix-hr | 31 tools, nothing matched 2026-10-22 |
| Unix seconds to ISO date, number discarded io.github.sadri-dridi/unix-iso | 31 tools, nothing matched 2026-10-22 |
| Unix seconds to ISO week-date io.github.sadri-dridi/unix-iso-w | 31 tools, nothing matched 2026-10-22 |
| Unix month 1-12 from seconds io.github.sadri-dridi/unix-mon | 31 tools, nothing matched 2026-10-22 |
| Whether a number looks like unix milliseconds io.github.sadri-dridi/unix-ms-ok | 31 tools, nothing matched 2026-10-22 |
| Unix epoch seconds io.github.sadri-dridi/unix-now | 31 tools, nothing matched 2026-10-22 |
| Unix quarter 1-4 from seconds io.github.sadri-dridi/unix-q | 31 tools, nothing matched 2026-10-22 |
| Unix seconds to UTC ISO, value discarded io.github.sadri-dridi/unix-to-iso | 31 tools, nothing matched 2026-10-22 |
| Unix week number io.github.sadri-dridi/unix-week | 31 tools, nothing matched 2026-10-22 |
| Unix week number from seconds io.github.sadri-dridi/unix-wk | 31 tools, nothing matched 2026-10-22 |
| Unix year number io.github.sadri-dridi/unix-year | 31 tools, nothing matched 2026-10-22 |
| UPC-A check-digit shape, value discarded io.github.sadri-dridi/upc-check | 31 tools, nothing matched 2026-10-22 |
| Upgrade protocol token, value discarded io.github.sadri-dridi/upgrade-ok | 31 tools, nothing matched 2026-10-22 |
| UPPERCASE run count, text discarded io.github.sadri-dridi/upper-n | 31 tools, nothing matched 2026-10-22 |
| UPPERCASE charset, value discarded io.github.sadri-dridi/upper-ok | 31 tools, nothing matched 2026-10-22 |
| UPPERCASE run length band, text discarded io.github.sadri-dridi/upper-run | 31 tools, nothing matched 2026-10-22 |
| URL encode, input discarded io.github.sadri-dridi/urlencode-ok | 31 tools, nothing matched 2026-10-22 |
| URL host only io.github.sadri-dridi/url-host | 31 tools, nothing matched 2026-10-22 |
| URL-ish token count, text discarded io.github.sadri-dridi/urlish-n | 31 tools, nothing matched 2026-10-22 |
| URL-ish token charset, value discarded io.github.sadri-dridi/urlish-ok | 31 tools, nothing matched 2026-10-22 |
| URL Normalize io.github.sadri-dridi/url-normalize | 31 tools, nothing matched 2026-10-22 |
| URL origin only io.github.sadri-dridi/url-origin | 31 tools, nothing matched 2026-10-22 |
| URL path only io.github.sadri-dridi/url-path | 31 tools, nothing matched 2026-10-22 |
| URL path length, URL discarded io.github.sadri-dridi/url-path-len | 31 tools, nothing matched 2026-10-22 |
| URL path segment count, query discarded io.github.sadri-dridi/url-path-ok | 31 tools, nothing matched 2026-10-22 |
| http/https scheme check, URL discarded io.github.sadri-dridi/url-scheme-ok | 31 tools, nothing matched 2026-10-22 |
| URL slug charset, value discarded io.github.sadri-dridi/url-slug-ok | 31 tools, nothing matched 2026-10-22 |
| URN NID shape, value discarded io.github.sadri-dridi/urn-ok | 31 tools, nothing matched 2026-10-22 |
| USD def count, body discarded io.github.sadri-dridi/usd-ok | 31 tools, nothing matched 2026-10-22 |
| UTC Clock io.github.sadri-dridi/utc-clock | 31 tools, nothing matched 2026-10-22 |
| UTC offset shape like +02:00 io.github.sadri-dridi/utc-offset-ok | 30 tools, nothing matched 2026-10-22 |
| UTF-16 unit count, text discarded io.github.sadri-dridi/utf16-len | 31 tools, nothing matched 2026-10-22 |
| UTF-16LE BOM presence, bytes discarded io.github.sadri-dridi/utf16le-ok | 31 tools, nothing matched 2026-10-22 |
| UTF-16 code-unit count, text discarded io.github.sadri-dridi/utf16-n | 31 tools, nothing matched 2026-10-22 |
| UTF-16 BOM/length band, value discarded io.github.sadri-dridi/utf16-ok | 31 tools, nothing matched 2026-10-22 |
| UTF-16 code-unit run, text discarded io.github.sadri-dridi/utf16-run | 31 tools, nothing matched 2026-10-22 |
| UTF-1 signature bytes, input discarded io.github.sadri-dridi/utf1-sig | 31 tools, nothing matched 2026-10-22 |
| UTF-32BE BOM presence, bytes discarded io.github.sadri-dridi/utf32be-ok | 31 tools, nothing matched 2026-10-22 |
| UTF-32LE BOM presence, bytes discarded io.github.sadri-dridi/utf32le-ok | 31 tools, nothing matched 2026-10-22 |
| UTF-8 byte length, text discarded io.github.sadri-dridi/utf8-bytes | 31 tools, nothing matched 2026-10-22 |
| UTF-8 non-ASCII byte count, input discarded io.github.sadri-dridi/utf8-nb | 31 tools, nothing matched 2026-10-22 |
| UTF-8 BOM presence, bytes discarded io.github.sadri-dridi/utf8sig-ok | 31 tools, nothing matched 2026-10-22 |
| UTF-EBCDIC signature, input discarded io.github.sadri-dridi/utfebcdic-ok | 31 tools, nothing matched 2026-10-22 |
| Utility 1 io.github.sadri-dridi/util-001 | 31 tools, nothing matched 2026-10-22 |
| Utility 2 io.github.sadri-dridi/util-002 | 31 tools, nothing matched 2026-10-22 |
| Utility 3 io.github.sadri-dridi/util-003 | 31 tools, nothing matched 2026-10-22 |
| Utility 4 io.github.sadri-dridi/util-004 | 31 tools, nothing matched 2026-10-22 |
| Utility 5 io.github.sadri-dridi/util-005 | 31 tools, nothing matched 2026-10-22 |
| Utility 6 io.github.sadri-dridi/util-006 | 31 tools, nothing matched 2026-10-22 |
| Utility 7 io.github.sadri-dridi/util-007 | 31 tools, nothing matched 2026-10-22 |
| Utility 8 io.github.sadri-dridi/util-008 | 31 tools, nothing matched 2026-10-22 |
| Utility 9 io.github.sadri-dridi/util-009 | 31 tools, nothing matched 2026-10-22 |
| Utility 10 io.github.sadri-dridi/util-010 | 31 tools, nothing matched 2026-10-22 |
| Utility 11 io.github.sadri-dridi/util-011 | 31 tools, nothing matched 2026-10-22 |
| Utility 12 io.github.sadri-dridi/util-012 | 31 tools, nothing matched 2026-10-22 |
| Utility 13 io.github.sadri-dridi/util-013 | 31 tools, nothing matched 2026-10-22 |
| Utility 14 io.github.sadri-dridi/util-014 | 31 tools, nothing matched 2026-10-22 |
| Utility 15 io.github.sadri-dridi/util-015 | 31 tools, nothing matched 2026-10-22 |
| Utility 16 io.github.sadri-dridi/util-016 | 31 tools, nothing matched 2026-10-22 |
| Utility 17 io.github.sadri-dridi/util-017 | 31 tools, nothing matched 2026-10-22 |
| Utility 18 io.github.sadri-dridi/util-018 | 31 tools, nothing matched 2026-10-22 |
| Utility 19 io.github.sadri-dridi/util-019 | 31 tools, nothing matched 2026-10-22 |
| Utility 20 io.github.sadri-dridi/util-020 | 31 tools, nothing matched 2026-10-22 |
| Utility 21 io.github.sadri-dridi/util-021 | 31 tools, nothing matched 2026-10-22 |
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