MCP servers for Grok Build

Bulgarian National Statistical Institute (НСИ / NSI) — Open Data API.

Number utilities MCP.

Nutrition MCP — wraps Open Food Facts API (free, no auth)

NYPL Digital Collections MCP.

OECD MCP — Organisation for Economic Co-operation and Development data

OEIS (On-Line Encyclopedia of Integer Sequences) MCP.

OKX v5 public MCP.

UK Office for National Statistics dataset catalogue + Beta JSON API

OpenCorporates MCP — Global company registry data (BYO key)

OpenFEC MCP — Federal Election Commission campaign finance data

Open Library MCP — Internet Archive's open book metadata

Open-Meteo MCP — weather forecast + historical reanalysis + sister APIs

OpenSanctions MCP — global sanctions and PEP data.

OpenAgenda MCP.

OpenAIRE MCP — EU research outputs (publications, datasets, software, projects)

OpenAlex MCP — wraps the OpenAlex API (scholarly works, free, no auth)

OpenAQ MCP — global air-quality measurements via the OpenAQ v3 API.

Open Beauty Facts MCP — Open Beauty Facts API (free, no auth, keyless).

Open Charge Map MCP — global EV charging station database (openchargemap.io).

OpenCitations MCP — citation index (COCI + general Index API).

opendata.swiss MCP — Switzerland's federal open-data portal (CKAN catalogue).