"Open Collective" matching MCP connectors:

Search 14.5M Smithsonian Open Access objects, get CC0 images, find cross-collection connections.

MET Museum collection via MCP — 500K+ artworks, metadata, provenance, open-access images.

Smithsonian Open Access MCP.

Cleveland Museum of Art Open Access API (~63k artworks, many CC0)

Guardian Open Platform: content search, articles, sections, tags. Free dev key.

Search books and authors across Open Library, the Internet Archive open catalog.

Books MCP — wraps Open Library API (free, no auth)

Open ArchivesB

io.github.coret

MCP server for Open Archives: Dutch genealogical records and historical page transcriptions.