Model Context Protocol servers that extend AI capabilities
MITRE Common Weakness Enumeration (CWE) API
MLB Stats API MCP — official MLB statistics
Minecraft profile lookups (UUID, profile, name history, blocked servers).
Monarch biomedical knowledge graph — diseases, phenotypes, genes, variants
MyGene.info — gene annotation joining NCBI/Ensembl/UniProt/KEGG/OMIM
NASA EONET MCP — Earth Observatory Natural Event Tracker
NASA POWER MCP — Prediction of Worldwide Energy Resources
NCBI E-utilities — federated Entrez search/fetch (PubMed/Gene/Nucleotide/…)
NewsAPI.org: top headlines, archive search, sources. Free 100/day key.
NIST Randomness Beacon v2 — signed public random pulses every 60s.
NOAA Storm Prediction Center — outlooks, storm reports, watches
NOAA Space Weather Prediction Center (solar wind, Kp, aurora, alerts)
NOAA Tides & Currents — observations, predictions, datums, station metadata
NosDéputés.fr MCP — civic-tech mirror of the French Assemblée nationale
CMS NPI Registry MCP
NPS MCP — US National Park Service (free key, generous limits)
NuGet MCP — .NET package registry
NWS MCP — US National Weather Service (no auth)
The Odds API MCP — sportsbook odds across 70+ books, 30+ leagues
OMDb MCP — IMDB-derived movie / TV / episode data (BYO key)
UK Office for National Statistics dataset catalogue + Beta JSON API
Open-Elevation MCP — terrain elevation by lat/lon (no auth)
Open Library MCP — Internet Archive's open book metadata
Open-Meteo MCP — weather forecast + historical reanalysis + sister APIs