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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 |
|---|---|---|---|---|---|
| 19001 | snake_case segment count, value discarded snake_case segment count, value discarded | clean | — | — | 24.0 |
| 19002 | SNI hostname shape, value discarded SNI hostname shape, value discarded | clean | — | — | 24.0 |
| 19003 | Snowflake 63-bit digit shape, value discarded Snowflake 63-bit digit shape, value discarded | clean | — | — | 24.0 |
| 19004 | Snowflake sequence bits, id discarded Snowflake sequence bits, id discarded | clean | — | — | 24.0 |
| 19005 | Snowflake timestamp bits, id discarded Snowflake timestamp bits, id discarded | clean | — | — | 24.0 |
| 19006 | Snowflake timestamp bits, value discarded Snowflake timestamp bits, value discarded | clean | — | — | 24.0 |
| 19007 | Snowflake worker-id bits, id discarded Snowflake worker-id bits, id discarded | clean | — | — | 24.0 |
| 19008 | SOAP Envelope shape, markup discarded SOAP Envelope shape, markup discarded | clean | — | — | 24.0 |
| 19009 | Whether current UTC month is a solstice month Whether current UTC month is a solstice month | clean | — | — | 24.0 |
| 19010 | Sonyflake digit shape, value discarded Sonyflake digit shape, value discarded | clean | — | — | 24.0 |
| 19011 | Sonyflake timestamp bits, value discarded Sonyflake timestamp bits, value discarded | clean | — | — | 24.0 |
| 19012 | UK sort-code hyphenated shape, value discarded UK sort-code hyphenated shape, value discarded | clean | — | — | 24.0 |
| 19013 | UK sort code 6-digit shape, value discarded UK sort code 6-digit shape, value discarded | clean | — | — | 24.0 |
| 19014 | Spans to centimeters, number discarded Spans to centimeters, number discarded | clean | — | — | 24.0 |
| 19015 | SPDX license expression tokens, value discarded SPDX license expression tokens, value discarded | clean | — | — | 24.0 |
| 19016 | SPKI prefix check, key discarded SPKI prefix check, key discarded | clean | — | — | 24.0 |
| 19017 | Sponsored Agent Placement Sponsored, labeled placements on agent-discovery surfaces we operate. Never impersonation. | clean | — | — | 24.0 |
| 19018 | SpookyHash hex length, input discarded SpookyHash hex length, input discarded | clean | — | — | 24.0 |
| 19019 | SpookyHash64 hex length, input discarded SpookyHash64 hex length, input discarded | clean | — | — | 24.0 |
| 19020 | Sqids alphabet charset, value discarded Sqids alphabet charset, value discarded | clean | — | — | 24.0 |
| 19021 | Sqids alphabet shape, value discarded Sqids alphabet shape, value discarded | clean | — | — | 24.0 |
| 19022 | Sqids blocklist-safe charset, value discarded Sqids blocklist-safe charset, value discarded | clean | — | — | 24.0 |
| 19023 | SQL single-quote escape count, input discarded SQL single-quote escape count, input discarded | clean | — | — | 24.0 |
| 19024 | Integer square-root band, number discarded Integer square-root band, number discarded | clean | — | — | 24.0 |
| 19025 | Square-bracket id shape, value discarded Square-bracket id shape, value discarded | clean | — | — | 24.0 |
| 19026 | Motorola S-record count, input discarded Motorola S-record count, input discarded | clean | — | — | 24.0 |
| 19027 | SSH fingerprint hex shape, value discarded SSH fingerprint hex shape, value discarded | clean | — | — | 24.0 |
| 19028 | ssh config Host count, body discarded ssh config Host count, body discarded | clean | — | — | 24.0 |
| 19029 | SSH FP record shape, value discarded SSH FP record shape, value discarded | clean | — | — | 24.0 |
| 19030 | SSRI sha384 digest shape, value discarded SSRI sha384 digest shape, value discarded | clean | — | — | 24.0 |
| 19031 | STEP ISO-10303 header, file discarded STEP ISO-10303 header, file discarded | clean | — | — | 24.0 |
| 19032 | Steres to cubic meters, number discarded Steres to cubic meters, number discarded | clean | — | — | 24.0 |
| 19033 | STL solid/header check, file discarded STL solid/header check, file discarded | clean | — | — | 24.0 |
| 19034 | Stones to kilograms, number discarded Stones to kilograms, number discarded | clean | — | — | 24.0 |
| 19035 | Stones to pounds, number discarded Stones to pounds, number discarded | clean | — | — | 24.0 |
| 19036 | Streebog-256 hex length, input discarded Streebog-256 hex length, input discarded | clean | — | — | 24.0 |
| 19037 | Approximate sunrise hour UTC for a latitude Approximate sunrise hour UTC for a latitude | clean | — | — | 24.0 |
| 19038 | Supabase URL Shape Check a Supabase project URL shape. Secrets discarded. | clean | — | — | 24.0 |
| 19039 | Alt-Svc h3 host:port shape, value discarded Alt-Svc h3 host:port shape, value discarded | clean | — | — | 24.0 |
| 19040 | SVG path command count, markup discarded SVG path command count, markup discarded | clean | — | — | 24.0 |
| 19041 | SVG root-tag shape, markup discarded SVG root-tag shape, markup discarded | clean | — | — | 24.0 |
| 19042 | SWID tagId charset, value discarded SWID tagId charset, value discarded | clean | — | — | 24.0 |
| 19043 | syslog PRI band, line discarded syslog PRI band, line discarded | clean | — | — | 24.0 |
| 19044 | SysML block count, body discarded SysML block count, body discarded | clean | — | — | 24.0 |
| 19045 | Tabindex integer band, value discarded Tabindex integer band, value discarded | clean | — | — | 24.0 |
| 19046 | tag: URI shape, value discarded tag: URI shape, value discarded | clean | — | — | 24.0 |
| 19047 | TAR ustar check, file discarded TAR ustar check, file discarded | clean | — | — | 24.0 |
| 19048 | Imperial tablespoons to milliliters, number discarded Imperial tablespoons to milliliters, number discarded | clean | — | — | 24.0 |
| 19049 | Tablespoons to milliliters, number discarded Tablespoons to milliliters, number discarded | clean | — | — | 24.0 |
| 19050 | TE trailers token count, value discarded TE trailers token 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.