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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 |
|---|---|---|---|---|---|
| 23451 | HTTP 201 created Meaning of HTTP 201. | info | — | — | 21.0 |
| 23452 | HTTP 202 accepted Meaning of HTTP 202. | info | — | — | 21.0 |
| 23453 | HTTP 204 no-content Meaning of HTTP 204. | info | — | — | 21.0 |
| 23454 | HTTP 206 partial-content Meaning of HTTP 206. | info | — | — | 21.0 |
| 23455 | HTTP 300 multiple-choices Meaning of HTTP 300. | info | — | — | 21.0 |
| 23456 | HTTP 301 moved-permanently Meaning of HTTP 301. | info | — | — | 21.0 |
| 23457 | HTTP 302 found Meaning of HTTP 302. | info | — | — | 21.0 |
| 23458 | HTTP 303 see-other Meaning of HTTP 303. | info | — | — | 21.0 |
| 23459 | HTTP 304 not-modified Meaning of HTTP 304. | info | — | — | 21.0 |
| 23460 | HTTP 307 temporary-redirect Meaning of HTTP 307. | info | — | — | 21.0 |
| 23461 | HTTP 308 permanent-redirect Meaning of HTTP 308. | info | — | — | 21.0 |
| 23462 | HTTP 400 bad-request Meaning of HTTP 400. | info | — | — | 21.0 |
| 23463 | HTTP 401 unauthorized Meaning of HTTP 401. | info | — | — | 21.0 |
| 23464 | HTTP 403 forbidden Meaning of HTTP 403. | info | — | — | 21.0 |
| 23465 | HTTP 404 not-found Meaning of HTTP 404. | info | — | — | 21.0 |
| 23466 | HTTP 405 method-not-allowed Meaning of HTTP 405. | info | — | — | 21.0 |
| 23467 | HTTP 406 not-acceptable Meaning of HTTP 406. | info | — | — | 21.0 |
| 23468 | HTTP 408 request-timeout Meaning of HTTP 408. | info | — | — | 21.0 |
| 23469 | HTTP 409 conflict Meaning of HTTP 409. | info | — | — | 21.0 |
| 23470 | HTTP 410 gone Meaning of HTTP 410. | info | — | — | 21.0 |
| 23471 | HTTP 412 precondition-failed Meaning of HTTP 412. | info | — | — | 21.0 |
| 23472 | HTTP 413 payload-too-large Meaning of HTTP 413. | info | — | — | 21.0 |
| 23473 | HTTP 414 uri-too-long Meaning of HTTP 414. | info | — | — | 21.0 |
| 23474 | HTTP 415 unsupported-media Meaning of HTTP 415. | info | — | — | 21.0 |
| 23475 | HTTP 418 teapot Meaning of HTTP 418. | info | — | — | 21.0 |
| 23476 | HTTP 422 unprocessable Meaning of HTTP 422. | info | — | — | 21.0 |
| 23477 | HTTP 425 too-early Meaning of HTTP 425. | info | — | — | 21.0 |
| 23478 | HTTP 426 upgrade-required Meaning of HTTP 426. | info | — | — | 21.0 |
| 23479 | HTTP 428 precondition-required Meaning of HTTP 428. | info | — | — | 21.0 |
| 23480 | HTTP 429 too-many-requests Meaning of HTTP 429. | info | — | — | 21.0 |
| 23481 | HTTP 431 header-fields-too-large Meaning of HTTP 431. | info | — | — | 21.0 |
| 23482 | HTTP 451 unavailable-legal Meaning of HTTP 451. | info | — | — | 21.0 |
| 23483 | HTTP 500 internal-error Meaning of HTTP 500. | info | — | — | 21.0 |
| 23484 | HTTP 501 not-implemented Meaning of HTTP 501. | info | — | — | 21.0 |
| 23485 | HTTP 502 bad-gateway Meaning of HTTP 502. | info | — | — | 21.0 |
| 23486 | HTTP 503 unavailable Meaning of HTTP 503. | info | — | — | 21.0 |
| 23487 | HTTP 504 gateway-timeout Meaning of HTTP 504. | info | — | — | 21.0 |
| 23488 | HTTP 505 http-version Meaning of HTTP 505. | info | — | — | 21.0 |
| 23489 | HTTP 507 insufficient-storage Meaning of HTTP 507. | info | — | — | 21.0 |
| 23490 | HTTP 511 network-auth Meaning of HTTP 511. | info | — | — | 21.0 |
| 23491 | IATA airport code shape IATA airport code shape | info | — | — | 21.0 |
| 23492 | ICAO airport code shape ICAO airport code shape | info | — | — | 21.0 |
| 23493 | Inches to centimeters Inches to centimeters | info | — | — | 21.0 |
| 23494 | Indian national year band Indian national year band | info | — | — | 21.0 |
| 23495 | IPv4 shape, address discarded IPv4 shape, address discarded | info | — | — | 21.0 |
| 23496 | IPv6 shape, address discarded IPv6 shape, address discarded | info | — | — | 21.0 |
| 23497 | ISBN digit shape ISBN digit shape | info | — | — | 21.0 |
| 23498 | Whether Islamic year is leap Whether Islamic year is leap | info | — | — | 21.0 |
| 23499 | UTC ISO week-year century UTC ISO week-year century | info | — | — | 21.0 |
| 23500 | UTC ISO date UTC ISO date | 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.