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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 |
|---|---|---|---|---|---|
| 18701 | MIC 4-char market code, value discarded MIC 4-char market code, value discarded | clean | — | — | 24.0 |
| 18702 | Mils to millimeters, number discarded Mils to millimeters, number discarded | clean | — | — | 24.0 |
| 18703 | MIME markdown Public MIME token for markdown. | clean | — | — | 24.0 |
| 18704 | MIME boundary count, body discarded MIME boundary count, body discarded | clean | — | — | 24.0 |
| 18705 | Whether a is inside [min,max], numbers discarded Whether a is inside [min,max], numbers discarded | clean | — | — | 24.0 |
| 18706 | Matroska EBML check, file discarded Matroska EBML check, file discarded | clean | — | — | 24.0 |
| 18707 | Milliliters to liters, number discarded Milliliters to liters, number discarded | clean | — | — | 24.0 |
| 18708 | mmHg to kilopascals, number discarded mmHg to kilopascals, number discarded | clean | — | — | 24.0 |
| 18709 | MODS titleInfo count, markup discarded MODS titleInfo count, markup discarded | clean | — | — | 24.0 |
| 18710 | Mongo URL Shape Check a MongoDB URL shape. Credentials discarded. | clean | — | — | 24.0 |
| 18711 | UTC first day of the current month UTC first day of the current month | clean | — | — | 24.0 |
| 18712 | UTC second day of the current month UTC second day of the current month | clean | — | — | 24.0 |
| 18713 | UTC last day of the current month UTC last day of the current month | clean | — | — | 24.0 |
| 18714 | Days to pad current UTC month to 31 Days to pad current UTC month to 31 | clean | — | — | 24.0 |
| 18715 | UTC start of the current month UTC start of the current month | clean | — | — | 24.0 |
| 18716 | Coarse moon age 0-29 from UTC day Coarse moon age 0-29 from UTC day | clean | — | — | 24.0 |
| 18717 | Coarse moon phase from UTC day Coarse moon phase from UTC day | clean | — | — | 24.0 |
| 18718 | MP3 frame sync check, file discarded MP3 frame sync check, file discarded | clean | — | — | 24.0 |
| 18719 | MP3 frame sync check, file discarded MP3 frame sync check, file discarded | clean | — | — | 24.0 |
| 18720 | Miles/h to m/s, number discarded Miles/h to m/s, number discarded | clean | — | — | 24.0 |
| 18721 | MessagePack marker count, body discarded MessagePack marker count, body discarded | clean | — | — | 24.0 |
| 18722 | multibase prefix charset, value discarded multibase prefix charset, value discarded | clean | — | — | 24.0 |
| 18723 | multibase z-prefix, value discarded multibase z-prefix, value discarded | clean | — | — | 24.0 |
| 18724 | multihash identity codec, value discarded multihash identity codec, value discarded | clean | — | — | 24.0 |
| 18725 | multihash prefix shape, value discarded multihash prefix shape, value discarded | clean | — | — | 24.0 |
| 18726 | multihash sha2 prefix, value discarded multihash sha2 prefix, value discarded | clean | — | — | 24.0 |
| 18727 | Murmur hash hex length, input discarded Murmur hash hex length, input discarded | clean | — | — | 24.0 |
| 18728 | MurmurHash hex, input discarded MurmurHash hex, input discarded | clean | — | — | 24.0 |
| 18729 | MurmurHash3-128 hex length, input discarded MurmurHash3-128 hex length, input discarded | clean | — | — | 24.0 |
| 18730 | MurmurHash3 hex length, input discarded MurmurHash3 hex length, input discarded | clean | — | — | 24.0 |
| 18731 | MurmurHash3 hex length, input discarded MurmurHash3 hex length, input discarded | clean | — | — | 24.0 |
| 18732 | MurmurHash3-32 hex length, input discarded MurmurHash3-32 hex length, input discarded | clean | — | — | 24.0 |
| 18733 | Nano ID length, value discarded Nano ID length, value discarded | clean | — | — | 24.0 |
| 18734 | nanoid URL-safe charset, value discarded nanoid URL-safe charset, value discarded | clean | — | — | 24.0 |
| 18735 | NDJSON line count, bodies discarded NDJSON line count, bodies discarded | clean | — | — | 24.0 |
| 18736 | NDJSON shape check, body discarded NDJSON shape check, body discarded | clean | — | — | 24.0 |
| 18737 | NEL JSON key count, body discarded NEL JSON key count, body discarded | clean | — | — | 24.0 |
| 18738 | Nepers to decibels, number discarded Nepers to decibels, number discarded | clean | — | — | 24.0 |
| 18739 | NetFlow version nibble, bytes discarded NetFlow version nibble, bytes discarded | clean | — | — | 24.0 |
| 18740 | LF vs CRLF vs CR, text discarded LF vs CRLF vs CR, text discarded | clean | — | — | 24.0 |
| 18741 | News Feed Count Count items in a public RSS or Atom feed. Titles discarded. | clean | — | — | 24.0 |
| 18742 | Nanograms to grams, number discarded Nanograms to grams, number discarded | clean | — | — | 24.0 |
| 18743 | ni: hash-URI shape, value discarded ni: hash-URI shape, value discarded | clean | — | — | 24.0 |
| 18744 | Nits to cd/m2, number discarded Nits to cd/m2, number discarded | clean | — | — | 24.0 |
| 18745 | Nix attr-set brace count, body discarded Nix attr-set brace count, body discarded | clean | — | — | 24.0 |
| 18746 | Nanoliters to liters, number discarded Nanoliters to liters, number discarded | clean | — | — | 24.0 |
| 18747 | Dutch postcode shape, value discarded Dutch postcode shape, value discarded | clean | — | — | 24.0 |
| 18748 | newline run length band, text discarded newline run length band, text discarded | clean | — | — | 24.0 |
| 18749 | Nanometers to meters, number discarded Nanometers to meters, number discarded | clean | — | — | 24.0 |
| 18750 | Nautical miles to kilometers, number discarded Nautical miles to kilometers, number 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.