IMF PortWatch MCP — global maritime trade & chokepoint signals (free, no auth)
56,214 MCP servers
iNaturalist MCP — citizen-science species observations (free, no auth for read-only)
INE Spain (National Institute of Statistics) Tempus3 JSON API MCP.
INEGI MCP — Mexico's national statistics office (INEGI) Indicators API.
INSPIRE-HEP MCP — high-energy physics literature.
Internet Archive (archive.org) item search & metadata MCP.
IP address utilities MCP.
IP Lookup MCP — ip-api.com (free, no auth for basic usage)
iRail MCP — Belgian rail (SNCB/NMBS) real-time via the community iRail API
iss-number MCP — wraps StupidAPIs (keyless — no credential needed)
Jina AI Reader/Search MCP — turn any URL into clean LLM-ready markdown, plus web search.
Jokes MCP — wraps JokeAPI v2 (free, no auth)
Kalshi MCP — US-regulated prediction-market data (no auth on public reads).
KEGG REST MCP — Kyoto Encyclopedia of Genes and Genomes.
Law Feeds MCP.
LeadConnector / GoHighLevel MCP Pack — wraps the GoHighLevel CRM for AI agents.
LeadMagic MCP — wraps the LeadMagic B2B email-finder API (leadmagic.io)
LeetCode MCP.
legislation.gov.uk MCP — the UK's official legislation database.
Lens.org MCP — patent + scholarly platform.
Library of Congress (loc.gov) MCP — the world's largest library.