"National Rail" matching MCP connectors:

Global population estimates from WorldPop, 2000-2030, at country and sub-national levels.

UK NIHR (National Institute for Health and Care Research) open-data MCP.

Medicare coverage policy from CMS: national and local coverage determinations, plus open analyses

NPS MCP — US National Park Service (free key, generous limits)

Plan US National Park Service trips — parks, alerts, campgrounds, things to do, events.

iRail MCP — Belgian rail (SNCB/NMBS) real-time via the community iRail API

Japan Law MCP — Japanese national laws & ordinances via the e-Gov Law API.

South Africa Government Procurement MCP — National Treasury eTenders / OCPO (keyless).

GovData.de MCP — Germany's national open-data portal (CKAN API).

NREL MCP — wraps the US National Renewable Energy Laboratory developer API

INEGI MCP — Mexico's national statistics office (INEGI) Indicators API.

FBI Art Crimes MCP — FBI National Stolen Art File (free, no auth).

UK Carbon Intensity MCP (National Grid ESO).

Croatian National Bank (Hrvatska narodna banka, HNB) exchange-rate MCP. Keyless.

NOAA Weather MCP — National Weather Service forecasts and alerts

Czech National Bank (Česká národní banka, ČNB) public API MCP. Keyless.

dados.gov.pt MCP — Portugal's national open data portal.

National Bank of Romania (Banca Naţională a României, BNR) FX reference rates MCP. Keyless.

Argentina 'Series de Tiempo' MCP — national time-series API (apis.datos.gob.ar).

STATEC (Institut national de la statistique et des études économiques du