MCP Servers
Model Context Protocol servers that give AI agents access to tools and data — sourced from the official MCP registry and ranked by GitHub stars.
universities
Universities MCP — Hipolabs Universities API (free, no auth)
Unpaywall
Unpaywall MCP — open-access lookup for scholarly papers (free, no key)
Urlhaus
URLhaus MCP — wraps abuse.ch URLhaus malware URL database (free, no auth)
Urlscan Io
urlscan.io URL scanner — search/result keyless, submit needs key
US State DMV
US state DMV data: vehicle and EV registrations, office locators, live wait times
Us Gov Contracts
US state & local government contracts + spending, normalized across jurisdictions — keyless
Us Iso Grid
US ISO Grid MCP — real-time electricity generation, fuel mix, demand,
Usaspending
USAspending MCP — Federal spending data from USAspending.gov API
uselessfacts
Uselessfacts MCP — wraps uselessfacts.jsph.pl API (free, no auth)
Usgs Earthquakes
USGS Earthquake Catalog MCP (FDSNWS event API).
Usgs Volcano
USGS Volcano MCP — Volcano Hazards Program HANS-public feed (no auth)
usgswater
USGS Water MCP — wraps USGS National Water Information System (NWIS) REST services (free, no auth)
Vessel Tracking
Vessel Tracking — live worldwide ship positions from AIS.
Victorian Complaint
victorian-complaint MCP — wraps StupidAPIs (requires X-API-Key)
videogames
Videogames MCP — wraps Free-to-Play Games API (freetogame.com, free, no auth)
Vies Eu
EU VIES VAT-number validation MCP (European Commission).
Vimeo
Vimeo public video/user/channel/category lookups. Free personal token.