Academic research search across PubMed and arXiv
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27 MCP servers, ordered by installs. 27 of 27 are free to start.
Agent reputation registry: check, register, and endorse AI agents
AI/ML research papers from arXiv, DBLP, and HuggingFace
Cross-exchange arbitrage opportunities and funding rate signals
Biomedical data: compounds, drug info, and molecular targets
Clinical trial search and status from ClinicalTrials.gov
DeFi protocol data: TVL, yield pools, and cross-chain analytics
Ecosystem monitoring: service status and x402 activity metrics
FEC campaign finance data: candidate fundraising, donors, and spending
US federal contracts, grants, and spending awards
Food and nutrition data: search, macros, and comparisons
Geocoding, weather forecasts, and timezone lookups
The rest either hold an API key issued by the publisher or ask for nothing.
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