Updated weekly · Free & open
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
The weekly report
What moved, what dropped, and what appeared — a short read every Monday. No spam, unsubscribe in one click.
Leaderboard
Activity & maintenance, not security — how this is scored| # | Server | Flags | Stars | Change | Score |
|---|---|---|---|---|---|
| 17051 | Ukri Gtr UKRI Gateway to Research (GtR) MCP — every grant awarded by the UK's seven | clean | — | — | 24.0 |
| 17052 | Umls UMLS MCP — wraps the NLM UMLS Terminology Services REST API (uts-ws.nlm.nih.gov/rest) | clean | — | — | 24.0 |
| 17053 | Un Sdg UN Sustainable Development Goals (SDG) Indicators MCP — UN Statistics Division. | clean | — | — | 24.0 |
| 17054 | Unesco Uis UNESCO Institute for Statistics (UIS) MCP — keyless. | clean | — | — | 24.0 |
| 17055 | Unhcr UNHCR Refugee Data Finder MCP (keyless). | clean | — | — | 24.0 |
| 17056 | Unicef UNICEF Data (UN Children's Fund) MCP — global statistics on child health, | clean | — | — | 24.0 |
| 17057 | Uniprot UniProt MCP — protein sequence + function database. | clean | — | — | 24.0 |
| 17058 | Universities Universities MCP — Hipolabs Universities API (free, no auth) | clean | — | — | 24.0 |
| 17059 | Unpaywall Unpaywall MCP — open-access lookup for scholarly papers (free, no key) | clean | — | — | 24.0 |
| 17060 | Unwrangle Unwrangle MCP — cross-retailer product + reviews data (unwrangle.com) | clean | — | — | 24.0 |
| 17061 | Urlhaus URLhaus MCP — wraps abuse.ch URLhaus malware URL database (free, no auth) | clean | — | — | 24.0 |
| 17062 | Us Auctions US Auctions MCP — every live US auction lot in the consolidated index, government AND commercial… | clean | — | — | 24.0 |
| 17063 | Us Code US Code — the text of federal statutes, by citation. | clean | — | — | 24.0 |
| 17064 | US State DMV US state DMV data: vehicle and EV registrations, office locators, live wait times | clean | — | — | 24.0 |
| 17065 | Us Elections us-elections -- U.S. election results by state, district, county and precinct (fleet #2952… | clean | — | — | 24.0 |
| 17066 | Us Gov Contracts US Government Contracts MCP — awarded state & local government contracts, | clean | — | — | 24.0 |
| 17067 | Us Iso Grid US ISO Grid MCP — real-time electricity generation, fuel mix, demand, | clean | — | — | 24.0 |
| 17068 | Us National Archives US National Archives Catalog (NARA): search the federal government's permanent records… | clean | — | — | 24.0 |
| 17069 | Usajobs USAJOBS.gov MCP — US federal job postings | clean | — | — | 24.0 |
| 17070 | Usaspending USAspending MCP — Federal spending data from USAspending.gov API | clean | — | — | 24.0 |
| 17071 | Usda Market News USDA AMS Market News -- Livestock Mandatory Price Reporting (LMR). | clean | — | — | 24.0 |
| 17072 | Usda Soil USDA-NRCS Soil Data Access over SSURGO, the field-surveyed US soil map — the soil at any US… | clean | — | — | 24.0 |
| 17073 | Uselessfacts Uselessfacts MCP — wraps uselessfacts.jsph.pl API (free, no auth) | clean | — | — | 24.0 |
| 17074 | Usgs Critical Deposits USGS Critical Mineral Deposits of the United States — fleet #2823. | clean | — | — | 24.0 |
| 17075 | Usgs Earthquakes USGS Earthquake Catalog MCP (FDSNWS event API). | clean | — | — | 24.0 |
| 17076 | Usgs Mineral Commodities USGS Mineral Commodity Summaries (MCS) — U.S. production, imports, exports, consumption, price… | clean | — | — | 24.0 |
| 17077 | Usgs Mrdata USGS MRData MCP — the Mineral Resources Data System (MRDS) | clean | — | — | 24.0 |
| 17078 | Usgs National Map USGS The National Map (TNM) Access API MCP | clean | — | — | 24.0 |
| 17079 | Usgs Volcano USGS Volcano MCP — Volcano Hazards Program HANS-public feed (no auth) | clean | — | — | 24.0 |
| 17080 | Usgs Water USGS Water Services (NWIS) MCP. | clean | — | — | 24.0 |
| 17081 | Usitc Edis USITC IDS (Investigations Database System, ids.usitc.gov) — the CASE | clean | — | — | 24.0 |
| 17082 | Usno Astronomy Next solar eclipse, eclipse times by place, Moon phases and seasons from the US Naval Observatory. | clean | — | — | 24.0 |
| 17083 | Uspto Office Actions USPTO patent prosecution history: office action full text, examiner citations, claim-level… | clean | — | — | 24.0 |
| 17084 | Uspto Ptab USPTO PTAB MCP — wraps the USPTO Open Data Portal (ODP) PTAB APIs | clean | — | — | 24.0 |
| 17085 | Utah Code Utah Code — state statutes by citation, plus topic search. | clean | — | — | 24.0 |
| 17086 | Uuid UUID validation & generation MCP. | clean | — | — | 24.0 |
| 17087 | Va Museum Victoria and Albert Museum (V&A) Collections MCP. | clean | — | — | 24.0 |
| 17088 | Vaers VAERS (Vaccine Adverse Event Reporting System) — report counts by vaccine, | clean | — | — | 24.0 |
| 17089 | Valorant VALORANT reference data MCP (valorant-api.com). | clean | — | — | 24.0 |
| 17090 | Vat VAT-number format validation MCP (EU + UK/CH/NO). | clean | — | — | 24.0 |
| 17091 | Vc Finder vc-finder — VC / angel investor graph (Bruce ask 2026-09-29; built | clean | — | — | 24.0 |
| 17092 | Vendor Signals Vendor documentation and changelog change-tracking as ACCOUNT SIGNALS | clean | — | — | 24.0 |
| 17093 | Veriphone Veriphone MCP — wraps the Veriphone phone-validation API (veriphone.io) | clean | — | — | 24.0 |
| 17094 | Vermont Code Vermont Statutes Annotated — state statutes by citation. | clean | — | — | 24.0 |
| 17095 | Vessel Tracking Vessel Tracking — live worldwide ship positions from AIS. | clean | — | — | 24.0 |
| 17096 | Vesselfinder VesselFinder MCP — wraps the VesselFinder AIS API (vesselfinder.com) | clean | — | — | 24.0 |
| 17097 | Veterinary Fda Veterinary FDA MCP — openFDA Animal & Veterinary adverse events, pet/animal | clean | — | — | 24.0 |
| 17098 | Victorian Complaint victorian-complaint MCP — wraps StupidAPIs (keyless — no credential needed) | clean | — | — | 24.0 |
| 17099 | Videogames Videogames MCP — wraps Free-to-Play Games API (freetogame.com, free, no auth) | clean | — | — | 24.0 |
| 17100 | Vies Eu EU VIES VAT-number validation MCP (European Commission). | 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.