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Which MCP servers are actually maintained?
The official registry lists every Model Context Protocol server but tells you nothing about whether any of them is still alive. This index scores each one on maintenance activity, flags what deserves a second look before you install it, and shows exactly how every number was reached.
49,991
servers indexed
87
with verified activity
20.0
median score
17,377
carrying risk flags
last refreshed
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Leaderboard
Activity & maintenance, not security — how this is scored| # | Server | Flags | Stars | Change | Score |
|---|---|---|---|---|---|
| 18901 | Referrer-Policy token, value discarded Referrer-Policy token, value discarded | clean | — | — | 24.0 |
| 18902 | Refresh seconds;url shape, value discarded Refresh seconds;url shape, value discarded | clean | — | — | 24.0 |
| 18903 | Regex compile check, pattern discarded Regex compile check, pattern discarded | clean | — | — | 24.0 |
| 18904 | Register tons to cubic meters, number discarded Register tons to cubic meters, number discarded | clean | — | — | 24.0 |
| 18905 | yesterday/today/tomorrow from a UTC date yesterday/today/tomorrow from a UTC date | clean | — | — | 24.0 |
| 18906 | Report-To group count, body discarded Report-To group count, body discarded | clean | — | — | 24.0 |
| 18907 | requirements.txt name count, versions discarded requirements.txt name count, versions discarded | clean | — | — | 24.0 |
| 18908 | resolv.conf nameserver count, body discarded resolv.conf nameserver count, body discarded | clean | — | — | 24.0 |
| 18909 | Retry-After integer-or-date, value discarded Retry-After integer-or-date, value discarded | clean | — | — | 24.0 |
| 18910 | Whether an HTTP status is retryable Whether an HTTP status is retryable | clean | — | — | 24.0 |
| 18911 | RFC errata id shape, value discarded RFC errata id shape, value discarded | clean | — | — | 24.0 |
| 18912 | encoded-word charset token, input discarded encoded-word charset token, input discarded | clean | — | — | 24.0 |
| 18913 | RFC 3986 unreserved charset, input discarded RFC 3986 unreserved charset, input discarded | clean | — | — | 24.0 |
| 18914 | RIPEMD hex length, input discarded RIPEMD hex length, input discarded | clean | — | — | 24.0 |
| 18915 | RIPEMD-160 hex length, input discarded RIPEMD-160 hex length, input discarded | clean | — | — | 24.0 |
| 18916 | Rison token charset, body discarded Rison token charset, body discarded | clean | — | — | 24.0 |
| 18917 | robots.txt Allow count, body discarded robots.txt Allow count, body discarded | clean | — | — | 24.0 |
| 18918 | Robots Inspect Fetch a public robots.txt and return group counts only. | clean | — | — | 24.0 |
| 18919 | Rods to meters, number discarded Rods to meters, number discarded | clean | — | — | 24.0 |
| 18920 | ROT47 charset transform length, input discarded ROT47 charset transform length, input discarded | clean | — | — | 24.0 |
| 18921 | ROT5 digit transform length, input discarded ROT5 digit transform length, input discarded | clean | — | — | 24.0 |
| 18922 | Decimal-place count for a number Decimal-place count for a number | clean | — | — | 24.0 |
| 18923 | integer rowid band, value discarded integer rowid band, value discarded | clean | — | — | 24.0 |
| 18924 | SQLite rowid integer band, value discarded SQLite rowid integer band, value discarded | clean | — | — | 24.0 |
| 18925 | RPM to hertz, number discarded RPM to hertz, number discarded | clean | — | — | 24.0 |
| 18926 | RPM to rad/s, number discarded RPM to rad/s, number discarded | clean | — | — | 24.0 |
| 18927 | Revolutions per second to hertz, number discarded Revolutions per second to hertz, number discarded | clean | — | — | 24.0 |
| 18928 | RSS feed shape, body discarded RSS feed shape, body discarded | clean | — | — | 24.0 |
| 18929 | reStructuredText directive count, body discarded reStructuredText directive count, body discarded | clean | — | — | 24.0 |
| 18930 | RTF header check, body discarded RTF header check, body discarded | clean | — | — | 24.0 |
| 18931 | Sass indent-rule count, body discarded Sass indent-rule count, body discarded | clean | — | — | 24.0 |
| 18932 | SCREAMING_SNAKE charset, value discarded SCREAMING_SNAKE charset, value discarded | clean | — | — | 24.0 |
| 18933 | HTML script tag count, markup discarded HTML script tag count, markup discarded | clean | — | — | 24.0 |
| 18934 | Scruples to grams, number discarded Scruples to grams, number discarded | clean | — | — | 24.0 |
| 18935 | scrypt hex length, input discarded scrypt hex length, input discarded | clean | — | — | 24.0 |
| 18936 | scrypt N cost band, value discarded scrypt N cost band, value discarded | clean | — | — | 24.0 |
| 18937 | SCSS rule count, body discarded SCSS rule count, body discarded | clean | — | — | 24.0 |
| 18938 | SCSU window-tag count, input discarded SCSU window-tag count, input discarded | clean | — | — | 24.0 |
| 18939 | SCSU BOM presence, input discarded SCSU BOM presence, input discarded | clean | — | — | 24.0 |
| 18940 | Search Query Length Count characters in a search query. Query discarded. | clean | — | — | 24.0 |
| 18941 | SEDOL 7-char charset, value discarded SEDOL 7-char charset, value discarded | clean | — | — | 24.0 |
| 18942 | semicolon-separated token count, value discarded semicolon-separated token count, value discarded | clean | — | — | 24.0 |
| 18943 | semicolon token count, value discarded semicolon token count, value discarded | clean | — | — | 24.0 |
| 18944 | SemVer range operators, value discarded SemVer range operators, value discarded | clean | — | — | 24.0 |
| 18945 | sentence-terminator count, text discarded sentence-terminator count, text discarded | clean | — | — | 24.0 |
| 18946 | sentence-terminator charset, value discarded sentence-terminator charset, value discarded | clean | — | — | 24.0 |
| 18947 | sentence count, text discarded sentence count, text discarded | clean | — | — | 24.0 |
| 18948 | Sentence count, text discarded Sentence count, text discarded | clean | — | — | 24.0 |
| 18949 | sentence-start cap count, text discarded sentence-start cap count, text discarded | clean | — | — | 24.0 |
| 18950 | Sentence-case first-cap shape, value discarded Sentence-case first-cap shape, value discarded | clean | — | — | 24.0 |
A score measures maintenance activity, not safety. A high score does not mean a server is secure, and a low one does not mean it is dangerous — see the methodology for what each signal does and does not tell you.