Every server in the registry, with its latest security score.
OpenWeather MCP — wraps the OpenWeatherMap API (openweathermap.org)
OQMD (Open Quantum Materials Database) MCP.
ORCID public researcher records (works, employment, education)
OSF (Open Science Framework, by the Center for Open Science) MCP.
OSRM MCP — routing via the public demo server
OSV.dev (Open Source Vulnerabilities) MCP.
Outlook Calendar MCP Pack
Outlook Contacts (Microsoft 365) MCP Pack
Outlook Mail (Microsoft 365) MCP Pack
data.overheid.nl MCP — the Netherlands national open-data portal (CKAN API).
OWASP MCP — keyless.
OWID MCP — Our World in Data chart/indicator access (free, no auth)
Oyez SCOTUS MCP.
PennDOT: quarterly EV, plug-in hybrid and total vehicle registrations by county and ZIP
Packagephobia MCP — install-size analysis for npm packages
Packagist MCP — PHP / Composer package registry
Paleobiology Database (PBDB) MCP — the global fossil record. Keyless.
Papers With Code MCP — browse ML research papers and their code repositories
Paraguay DNCP MCP — Paraguay government procurement / public contracts (keyless).
Que Faire à Paris MCP.
passive-aggression MCP — wraps StupidAPIs (requires X-API-Key)
PDBe (Protein Data Bank in Europe, EBI) MCP.
PeeringDB MCP — the peering ecosystem database.
People Data Labs MCP — wraps the PDL person/company enrichment API
performance-review MCP — wraps StupidAPIs (requires X-API-Key)
4,551–4,575 of 7,643 servers
