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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 |
|---|---|---|---|---|---|
| 18801 | PEP 621 project name shape, body discarded PEP 621 project name shape, body discarded | clean | — | — | 24.0 |
| 18802 | Percent-decode length, input discarded Percent-decode length, input discarded | clean | — | — | 24.0 |
| 18803 | a as percent of b, numbers discarded a as percent of b, numbers discarded | clean | — | — | 24.0 |
| 18804 | Percent-encode triplet count, input discarded Percent-encode triplet count, input discarded | clean | — | — | 24.0 |
| 18805 | form-urlencoded percent/plus mix, input discarded form-urlencoded percent/plus mix, input discarded | clean | — | — | 24.0 |
| 18806 | Permissions-Policy directive count, value discarded Permissions-Policy directive count, value discarded | clean | — | — | 24.0 |
| 18807 | PGP armor fence check, key discarded PGP armor fence check, key discarded | clean | — | — | 24.0 |
| 18808 | Picas to millimeters, number discarded Picas to millimeters, number discarded | clean | — | — | 24.0 |
| 18809 | Culinary pinches to milliliters, number discarded Culinary pinches to milliliters, number discarded | clean | — | — | 24.0 |
| 18810 | Imperial pints to liters, number discarded Imperial pints to liters, number discarded | clean | — | — | 24.0 |
| 18811 | pipe-separated token count, value discarded pipe-separated token count, value discarded | clean | — | — | 24.0 |
| 18812 | pipe token count, value discarded pipe token count, value discarded | clean | — | — | 24.0 |
| 18813 | Playwright URL Check Check whether a URL can be opened. No browser is launched. | clean | — | — | 24.0 |
| 18814 | plist key count, values discarded plist key count, values discarded | clean | — | — | 24.0 |
| 18815 | XML plist dict count, body discarded XML plist dict count, body discarded | clean | — | — | 24.0 |
| 18816 | Open Location Code shape, value discarded Open Location Code shape, value discarded | clean | — | — | 24.0 |
| 18817 | application/x-www-form-urlencoded plus count, input discarded application/x-www-form-urlencoded plus count, input discarded | clean | — | — | 24.0 |
| 18818 | Picometres to meters, number discarded Picometres to meters, number discarded | clean | — | — | 24.0 |
| 18819 | PubMed id shape, value discarded PubMed id shape, value discarded | clean | — | — | 24.0 |
| 18820 | PNG magic-byte check, file discarded PNG magic-byte check, file discarded | clean | — | — | 24.0 |
| 18821 | Typographic points to millimeters, number discarded Typographic points to millimeters, number discarded | clean | — | — | 24.0 |
| 18822 | Poles to meters, number discarded Poles to meters, number discarded | clean | — | — | 24.0 |
| 18823 | Poly1305 hex length, input discarded Poly1305 hex length, input discarded | clean | — | — | 24.0 |
| 18824 | Poly1305 tag length, input discarded Poly1305 tag length, input discarded | clean | — | — | 24.0 |
| 18825 | Maven POM coordinate shape, body discarded Maven POM coordinate shape, body discarded | clean | — | — | 24.0 |
| 18826 | Port 110 Whether 110 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18827 | Port 143 Whether 143 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18828 | Port 20 Whether 20 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18829 | Port 21 Whether 21 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18830 | Port 22 Whether 22 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18831 | Port 23 Whether 23 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18832 | Port 25 Whether 25 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18833 | Port 27017 Whether 27017 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18834 | Port 3306 Whether 3306 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18835 | Port 443 Whether 443 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18836 | Port 465 Whether 465 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18837 | Port 53 Whether 53 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18838 | Port 5432 Whether 5432 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18839 | Port 587 Whether 587 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18840 | Port 6379 Whether 6379 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18841 | Port 80 Whether 80 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18842 | Port 8080 Whether 8080 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18843 | Port 8443 Whether 8443 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18844 | Port 993 Whether 993 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18845 | Port 995 Whether 995 is a common TCP/UDP port. | clean | — | — | 24.0 |
| 18846 | Canadian postal code shape, value discarded Canadian postal code shape, value discarded | clean | — | — | 24.0 |
| 18847 | Dutch postcode shape, value discarded Dutch postcode shape, value discarded | clean | — | — | 24.0 |
| 18848 | UK postcode shape, value discarded UK postcode shape, value discarded | clean | — | — | 24.0 |
| 18849 | Postgres URL Shape Check a Postgres URL shape. Credentials discarded. | clean | — | — | 24.0 |
| 18850 | Integer power band, numbers discarded Integer power band, numbers 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.