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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 |
|---|---|---|---|---|---|
| 18951 | Sentry DSN Shape Check a Sentry DSN shape. Secret discarded. | clean | — | — | 24.0 |
| 18952 | monotonic sequence digit band, value discarded monotonic sequence digit band, value discarded | clean | — | — | 24.0 |
| 18953 | Server product-token count, value discarded Server product-token count, value discarded | clean | — | — | 24.0 |
| 18954 | Set-Cookie attribute count, values discarded Set-Cookie attribute count, values discarded | clean | — | — | 24.0 |
| 18955 | S-expression paren count, body discarded S-expression paren count, body discarded | clean | — | — | 24.0 |
| 18956 | SHA-1 hex length, input discarded SHA-1 hex length, input discarded | clean | — | — | 24.0 |
| 18957 | SHA-224 hex length, input discarded SHA-224 hex length, input discarded | clean | — | — | 24.0 |
| 18958 | SHA-224 hex length, input discarded SHA-224 hex length, input discarded | clean | — | — | 24.0 |
| 18959 | SHA-256 hex length, input discarded SHA-256 hex length, input discarded | clean | — | — | 24.0 |
| 18960 | SHA3-224 hex length, input discarded SHA3-224 hex length, input discarded | clean | — | — | 24.0 |
| 18961 | SHA3-256 hex length, input discarded SHA3-256 hex length, input discarded | clean | — | — | 24.0 |
| 18962 | SHA3-384 hex length, input discarded SHA3-384 hex length, input discarded | clean | — | — | 24.0 |
| 18963 | SHA3-512 hex length, input discarded SHA3-512 hex length, input discarded | clean | — | — | 24.0 |
| 18964 | SHA-3 hex length, input discarded SHA-3 hex length, input discarded | clean | — | — | 24.0 |
| 18965 | SHA-384 hex length, input discarded SHA-384 hex length, input discarded | clean | — | — | 24.0 |
| 18966 | SHA-384 hex length, input discarded SHA-384 hex length, input discarded | clean | — | — | 24.0 |
| 18967 | SHA-512 hex length, input discarded SHA-512 hex length, input discarded | clean | — | — | 24.0 |
| 18968 | SHA-512 hex length, input discarded SHA-512 hex length, input discarded | clean | — | — | 24.0 |
| 18969 | SHACL NodeShape count, body discarded SHACL NodeShape count, body discarded | clean | — | — | 24.0 |
| 18970 | SHAKE128 hex length, input discarded SHAKE128 hex length, input discarded | clean | — | — | 24.0 |
| 18971 | SHAKE128 hex length band, input discarded SHAKE128 hex length band, input discarded | clean | — | — | 24.0 |
| 18972 | SHAKE256 hex length, input discarded SHAKE256 hex length, input discarded | clean | — | — | 24.0 |
| 18973 | SHAKE256 hex length band, input discarded SHAKE256 hex length band, input discarded | clean | — | — | 24.0 |
| 18974 | Shebang interpreter token, line discarded Shebang interpreter token, line discarded | clean | — | — | 24.0 |
| 18975 | POSIX shell quote shape, input discarded POSIX shell quote shape, input discarded | clean | — | — | 24.0 |
| 18976 | Shift_JIS lead-byte band, input discarded Shift_JIS lead-byte band, input discarded | clean | — | — | 24.0 |
| 18977 | shortid charset, value discarded shortid charset, value discarded | clean | — | — | 24.0 |
| 18978 | shortuuid hex charset, value discarded shortuuid hex charset, value discarded | clean | — | — | 24.0 |
| 18979 | Short-UUID charset, value discarded Short-UUID charset, value discarded | clean | — | — | 24.0 |
| 18980 | Shots to milliliters, number discarded Shots to milliliters, number discarded | clean | — | — | 24.0 |
| 18981 | short-uuid sid charset, value discarded short-uuid sid charset, value discarded | clean | — | — | 24.0 |
| 18982 | Approximate sidereal hour band Approximate sidereal hour band | clean | — | — | 24.0 |
| 18983 | SipHash-4-8 hex length, input discarded SipHash-4-8 hex length, input discarded | clean | — | — | 24.0 |
| 18984 | SipHash-2-4 hex length, input discarded SipHash-2-4 hex length, input discarded | clean | — | — | 24.0 |
| 18985 | SipHash hex length, input discarded SipHash hex length, input discarded | clean | — | — | 24.0 |
| 18986 | SipHash hex length, input discarded SipHash hex length, input discarded | clean | — | — | 24.0 |
| 18987 | Sitemap URL count, body discarded Sitemap URL count, body discarded | clean | — | — | 24.0 |
| 18988 | Slack channel name shape, value discarded Slack channel name shape, value discarded | clean | — | — | 24.0 |
| 18989 | Slack Webhook Shape Check a Slack webhook URL shape. Secret discarded. | clean | — | — | 24.0 |
| 18990 | slash-separated token count, value discarded slash-separated token count, value discarded | clean | — | — | 24.0 |
| 18991 | slash-separated charset, value discarded slash-separated charset, value discarded | clean | — | — | 24.0 |
| 18992 | Slugs to kilograms, number discarded Slugs to kilograms, number discarded | clean | — | — | 24.0 |
| 18993 | SM3 hex length, input discarded SM3 hex length, input discarded | clean | — | — | 24.0 |
| 18994 | SM3 hex length, input discarded SM3 hex length, input discarded | clean | — | — | 24.0 |
| 18995 | Smidgens to milliliters, number discarded Smidgens to milliliters, number discarded | clean | — | — | 24.0 |
| 18996 | Smile binary header, bytes discarded Smile binary header, bytes discarded | clean | — | — | 24.0 |
| 18997 | S/MIME PKCS7 fence, body discarded S/MIME PKCS7 fence, body discarded | clean | — | — | 24.0 |
| 18998 | snake_case segment count, value discarded snake_case segment count, value discarded | clean | — | — | 24.0 |
| 18999 | snake_case shape, text discarded snake_case shape, text discarded | clean | — | — | 24.0 |
| 19000 | snake_case segment count, value discarded snake_case segment count, 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.