Browse 2,097 Model Context Protocol servers · remote · TypeScriptClear

OpenseaOfficial

OpenSea MCP — NFT marketplace data (v2 API)

OpenskyOfficial

OpenSky MCP — OpenSky Network API (free, no auth for anonymous access)

OpenstatesOfficial

OpenStates MCP — bills, legislators, votes in all 50 US states

OpentargetsOfficial

Open Targets disease/target/drug knowledge graph (GraphQL)

OpentopodataOfficial

Open Topo Data — global elevation lookups (multiple DEM datasets)

OpentopographyOfficial

OpenTopography global DEM rasters + point queries (free key)

OpentreeoflifeOfficial

Open Tree of Life MCP.

OpenverseOfficial

Openverse Creative-Commons image + audio search

OpenweatherOfficial

OpenWeather MCP — wraps the OpenWeatherMap API (openweathermap.org)

OqmdOfficial

OQMD (Open Quantum Materials Database) MCP.

OrcidOfficial

ORCID public researcher records (works, employment, education)

OsfOfficial

OSF (Open Science Framework, by the Center for Open Science) MCP.

OsrmOfficial

OSRM MCP — routing via the public demo server

OsvOfficial

OSV.dev (Open Source Vulnerabilities) MCP.

Outlook CalendarOfficial

Outlook Calendar MCP Pack

Outlook ContactsOfficial

Outlook Contacts (Microsoft 365) MCP Pack

Outlook MailOfficial

Outlook Mail (Microsoft 365) MCP Pack

Overheid NlOfficial

data.overheid.nl MCP — the Netherlands national open-data portal (CKAN API).

OverpassOfficial

OpenStreetMap Overpass MCP — programmatic queries against the OSM database

OwaspOfficial

OWASP MCP — keyless.

OwidOfficial

OWID MCP — Our World in Data chart/indicator access (free, no auth)

OyezOfficial

Oyez SCOTUS MCP.

PackagephobiaOfficial

Packagephobia MCP — install-size analysis for npm packages

PackagistOfficial

Packagist MCP — PHP / Composer package registry