MCP servers for Codex CLI

UNHCR Refugee Data Finder MCP (keyless).

Unicode character MCP.

Unpaywall MCP — open-access lookup for scholarly papers (free, no key)

US News Feeds MCP.

User-Agent parser MCP.

USGS Earthquake Catalog MCP (FDSNWS event API).

USGS Water Services (NWIS) MCP.

UUID validation & generation MCP.

Victoria and Albert Museum (V&A) Collections MCP.

VALORANT reference data MCP (valorant-api.com).

victorian-complaint MCP — wraps StupidAPIs (keyless — no credential needed)

VizieR MCP — CDS astronomical catalogue access.

Watchmode MCP.

Environment and Climate Change Canada (ECCC) GeoMet MCP.

Weather MCP — wraps Open-Meteo API (free, no auth)

Wger MCP — wraps wger Workout Manager REST API (free, no auth for read)

Wikidata SPARQL MCP — Wikidata Query Service

WMATA MCP.

Xero (Accounting) MCP Pack

yesterdays-number MCP — wraps StupidAPIs (keyless — no credential needed)

YGOPRODeck MCP — Yu-Gi-Oh! trading card game (TCG) database.