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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.

54,385
servers indexed
86
with verified activity
20.0
median score
19,556
carrying risk flags
last refreshed

Leaderboard

Activity & maintenance, not security — how this is scored
MCP servers ranked by activity and maintenance score, highest first.
#ServerFlagsStarsChangeScore
25601US state VA
USPS state code VA.
info——
21.0
25602US state VT
USPS state code VT.
info——
21.0
25603US state WA
USPS state code WA.
info——
21.0
25604US state WI
USPS state code WI.
info——
21.0
25605US state WV
USPS state code WV.
info——
21.0
25606US state WY
USPS state code WY.
info——
21.0
25607HTTP status class 1xx-5xx
HTTP status class 1xx-5xx
info——
21.0
25608Short status catalog
Short status catalog
info——
21.0
25609ISO/IEC standard number shape
ISO/IEC standard number shape
info——
21.0
25610tab count, text discarded
tab count, text discarded
info——
21.0
25611Tablespoons to milliliters
Tablespoons to milliliters
info——
21.0
25612Thai solar year band
Thai solar year band
info——
21.0
25613TOML validity, body discarded
TOML validity, body discarded
info——
21.0
25614Teaspoons to milliliters
Teaspoons to milliliters
info——
21.0
25615Civil twilight hour-band UTC
Civil twilight hour-band UTC
info——
21.0
25616TypeID shape check
TypeID shape check
info——
21.0
25617GMT clock
Current local time in GMT.
info——
21.0
25618UTC offset hours
UTC offset hours
info——
21.0
25619UTC clock
Current local time in UTC.
info——
21.0
25620ULID Crockford charset
ULID Crockford charset
info——
21.0
25621ULID character length
ULID character length
info——
21.0
25622Time-sortable id shape
Time-sortable id shape
info——
21.0
25623ULID shape check
ULID shape check
info——
21.0
25624Unix day number
Unix day number
info——
21.0
25625Unix day-of-year from seconds
Unix day-of-year from seconds
info——
21.0
25626Unix hour number
Unix hour number
info——
21.0
25627Unix seconds to ISO week-date
Unix seconds to ISO week-date
info——
21.0
25628Unix month 1-12 from seconds
Unix month 1-12 from seconds
info——
21.0
25629Unix epoch seconds
Unix epoch seconds
info——
21.0
25630Unix quarter 1-4 from seconds
Unix quarter 1-4 from seconds
info——
21.0
25631Unix week number
Unix week number
info——
21.0
25632Unix week number from seconds
Unix week number from seconds
info——
21.0
25633Unix year number
Unix year number
info——
21.0
25634URL host only
URL host only
info——
21.0
25635URL origin only
URL origin only
info——
21.0
25636URL path only
URL path only
info——
21.0
25637URL encode, input discarded
URL encode, input discarded
info——
21.0
25638USD def count, body discarded
USD def count, body discarded
info——
21.0
25639UTC offset shape like +02:00
UTC offset shape like +02:00
info——
21.0
25640Max UUID constant
Max UUID constant
info——
21.0
25641UUID max (all-ones) shape
UUID max (all-ones) shape
info——
21.0
25642UUID Mint
Mint a random UUID v4.
info——
21.0
25643Nil UUID constant
Nil UUID constant
info——
21.0
25644Nil UUID shape
Nil UUID shape
info——
21.0
25645UUID shape check
UUID shape check
info——
21.0
25646UUID v1 time-based shape
UUID v1 time-based shape
info——
21.0
25647Random UUID v4
Random UUID v4
info——
21.0
25648UUID v5 name-based shape
UUID v5 name-based shape
info——
21.0
25649UUID v7 time-sortable shape
UUID v7 time-sortable shape
info——
21.0
25650vCard shape, body discarded
vCard shape, body discarded
info——
21.0

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.