Number utilities MCP.
Free
1,834 MCP servers
Works with Grok BuildBy pipeworx-io
NYPL Digital Collections MCP.
Free
Odoo MCP Pack — ERP/CRM via Odoo's external JSON-RPC API.
Free
OECD MCP — Organisation for Economic Co-operation and Development data
Free
OEIS (On-Line Encyclopedia of Integer Sequences) MCP.
Free
OKX v5 public MCP.
Free
OneDrive (Microsoft Graph) MCP Pack
Free
UK Office for National Statistics dataset catalogue + Beta JSON API
Free
OONI MCP — internet censorship & website reachability measurements from the
Free
Open Library MCP — Internet Archive's open book metadata
Free
OpenSanctions MCP — global sanctions and PEP data.
Free
OpenAIRE MCP — EU research outputs (publications, datasets, software, projects)
Free
OpenAlex MCP — wraps the OpenAlex API (scholarly works, free, no auth)
Free
Open Beauty Facts MCP — Open Beauty Facts API (free, no auth, keyless).
Free
OpenCitations MCP — citation index (COCI + general Index API).
Free
opendata.swiss MCP — Switzerland's federal open-data portal (CKAN catalogue).
Free
data.gov.my / OpenDOSM (Department of Statistics Malaysia) — official Malaysian open-data API.
Free
OpenReview MCP — ML conference submissions and reviews (API v2)
Free
Openrouteservice MCP.
Free
OpenSky MCP — live aircraft, served from keyless community ADS-B feeds.
Free
Open Targets MCP — disease/target/drug knowledge graph.
Free