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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 |
|---|---|---|---|---|---|
| 18251 | content-id base58 length, value discarded content-id base58 length, value discarded | clean | — | — | 24.0 |
| 18252 | content-address hex length, value discarded content-address hex length, value discarded | clean | — | — | 24.0 |
| 18253 | Contrast ratio for two hex colors Contrast ratio for two hex colors | clean | — | — | 24.0 |
| 18254 | Cookie pair count, value discarded Cookie pair count, value discarded | clean | — | — | 24.0 |
| 18255 | Cookie name charset, value discarded Cookie name charset, value discarded | clean | — | — | 24.0 |
| 18256 | Cookie name charset, value discarded Cookie name charset, value discarded | clean | — | — | 24.0 |
| 18257 | Cross-Origin-Opener-Policy token, value discarded Cross-Origin-Opener-Policy token, value discarded | clean | — | — | 24.0 |
| 18258 | Latitude/longitude numeric shape Latitude/longitude numeric shape | clean | — | — | 24.0 |
| 18259 | Cords to cubic meters, number discarded Cords to cubic meters, number discarded | clean | — | — | 24.0 |
| 18260 | Cross-Origin-Resource-Policy token, value discarded Cross-Origin-Resource-Policy token, value discarded | clean | — | — | 24.0 |
| 18261 | CORP same-origin/same-site token, value discarded CORP same-origin/same-site token, value discarded | clean | — | — | 24.0 |
| 18262 | X-Correlation-Id charset, value discarded X-Correlation-Id charset, value discarded | clean | — | — | 24.0 |
| 18263 | CP437 box-draw band, bytes discarded CP437 box-draw band, bytes discarded | clean | — | — | 24.0 |
| 18264 | CP850 high-bit band, bytes discarded CP850 high-bit band, bytes discarded | clean | — | — | 24.0 |
| 18265 | CPE 2.3 wfn field count, value discarded CPE 2.3 wfn field count, value discarded | clean | — | — | 24.0 |
| 18266 | crate metadata name shape, body discarded crate metadata name shape, body discarded | clean | — | — | 24.0 |
| 18267 | CRC-16 hex length, input discarded CRC-16 hex length, input discarded | clean | — | — | 24.0 |
| 18268 | CRC-24 hex length, input discarded CRC-24 hex length, input discarded | clean | — | — | 24.0 |
| 18269 | CRC-64 hex length, input discarded CRC-64 hex length, input discarded | clean | — | — | 24.0 |
| 18270 | CRC-8 hex length, input discarded CRC-8 hex length, input discarded | clean | — | — | 24.0 |
| 18271 | CRLF pair count, text discarded CRLF pair count, text discarded | clean | — | — | 24.0 |
| 18272 | CRLF run count, text discarded CRLF run count, text discarded | clean | — | — | 24.0 |
| 18273 | Crockford Base32 id charset, value discarded Crockford Base32 id charset, value discarded | clean | — | — | 24.0 |
| 18274 | Citation Style Language locale shape, body discarded Citation Style Language locale shape, body discarded | clean | — | — | 24.0 |
| 18275 | CSP directive count, value discarded CSP directive count, value discarded | clean | — | — | 24.0 |
| 18276 | CSP-Report-Only directive count, value discarded CSP-Report-Only directive count, value discarded | clean | — | — | 24.0 |
| 18277 | csproj package reference count, body discarded csproj package reference count, body discarded | clean | — | — | 24.0 |
| 18278 | csproj package reference count, body discarded csproj package reference count, body discarded | clean | — | — | 24.0 |
| 18279 | CSR PEM fence check, body discarded CSR PEM fence check, body discarded | clean | — | — | 24.0 |
| 18280 | CSS rule count, body discarded CSS rule count, body discarded | clean | — | — | 24.0 |
| 18281 | CSS rule count, stylesheet discarded CSS rule count, stylesheet discarded | clean | — | — | 24.0 |
| 18282 | CSS escape sequence count, input discarded CSS escape sequence count, input discarded | clean | — | — | 24.0 |
| 18283 | CSV header column count, rows discarded CSV header column count, rows discarded | clean | — | — | 24.0 |
| 18284 | CSV quoted-field count, input discarded CSV quoted-field count, input discarded | clean | — | — | 24.0 |
| 18285 | CSV header count, body discarded CSV header count, body discarded | clean | — | — | 24.0 |
| 18286 | CSV column count, body discarded CSV column count, body discarded | clean | — | — | 24.0 |
| 18287 | CSV data-row count, cells discarded CSV data-row count, cells discarded | clean | — | — | 24.0 |
| 18288 | Carats to grams, number discarded Carats to grams, number discarded | clean | — | — | 24.0 |
| 18289 | Cubits to meters, number discarded Cubits to meters, number discarded | clean | — | — | 24.0 |
| 18290 | CUE definition count, body discarded CUE definition count, body discarded | clean | — | — | 24.0 |
| 18291 | CUID prefix-c shape, value discarded CUID prefix-c shape, value discarded | clean | — | — | 24.0 |
| 18292 | CUID timestamp chunk, value discarded CUID timestamp chunk, value discarded | clean | — | — | 24.0 |
| 18293 | CUID2 length band, value discarded CUID2 length band, value discarded | clean | — | — | 24.0 |
| 18294 | CUID2 charset, value discarded CUID2 charset, value discarded | clean | — | — | 24.0 |
| 18295 | Imperial cups to milliliters, number discarded Imperial cups to milliliters, number discarded | clean | — | — | 24.0 |
| 18296 | US cups to milliliters, number discarded US cups to milliliters, number discarded | clean | — | — | 24.0 |
| 18297 | Hundredweight to kilograms, number discarded Hundredweight to kilograms, number discarded | clean | — | — | 24.0 |
| 18298 | CycloneDX component count, body discarded CycloneDX component count, body discarded | clean | — | — | 24.0 |
| 18299 | Culinary dashes to milliliters, number discarded Culinary dashes to milliliters, number discarded | clean | — | — | 24.0 |
| 18300 | data: URI media-type only, payload discarded data: URI media-type only, payload 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.