Crossref DOI Lookup — Titles, Venues, Dates & Citation Counts for ChatGPT

io.github.kriton-dev/crossref-doi-metadata

Resolve DOI identifiers to Crossref titles, venues, dates and citation counts for reference checks.

client:ChatGPT transport:streamable-http

Install Crossref DOI Lookup — Titles, Venues, Dates & Citation Counts in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.apify.com/?tools=hermeskd/crossref-doi-metadata

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs