9 tools that work with Crossref: 9 MCP servers, 0 Agent Skills and 0 Claude Code plugins. 2 of the remote servers answered our live check, 1 worked without an API key, and 1 come from an official or verified publisher. Ranked by GitHub stars plus official, live and free-to-try signals.
Most common uses: Research, papers & reference data (7), Web search engines & search APIs (2).
| Tool | Stars | Last update | License | |
|---|---|---|---|---|
| paper-preflight Checks every LaTeX reference against Crossref, dblp, arXiv, DataCite, PubMed and OpenAlex. No LLM. MCP serverGitHub-verified authorLocal · PyPI | 183 | MIT | ||
| Evident Source Check Check AI references against Crossref and DataCite. DOI/arXiv metadata checks, plus tool discovery. MCP serverVerified domain · evidentagents.comRemote● Live | — | — | ||
| Research Paper & DOI Lookup (Crossref) Verify a DOI or find papers via Crossref metadata. $0.005/call via x402. MCP serverGitHub-verified authorRemote● LiveFree to try | — | — | ||
| io.github.cyanheads/crossref-mcp-server Resolve DOIs, search ~188M scholarly works, and fetch references via the Crossref REST API. MCP serverGitHub-verified authorLocal · npm | 5 | — | ||
| Crossref DOI Lookup — Titles, Venues, Dates & Citation Counts Resolve DOI identifiers to Crossref titles, venues, dates and citation counts for reference checks. MCP serverGitHub-verified authorRemoteSign-in needed | — | — | ||
| Crossref Scholarly Data Search 150M+ academic works, journals, and funders via Crossref API. MCP serverGitHub-verified authorRemoteSign-in needed | — | — | ||
| DONVI108 Free Research Beta Free scholarly paper and DOI discovery via Crossref. Self-service registration; no invitation. MCP serverGitHub-verified authorRemoteSign-in needed | 0 | MIT | ||
| io.github.jtl-neo/crossref-mcp MCP server wrapping the Crossref REST API for scholarly metadata. MCP serverGitHub-verified authorLocal · PyPI | 0 | MIT | ||
| io.github.SMABoundless/crossref Search and retrieve scholarly metadata from the Crossref REST API MCP serverGitHub-verified authorLocal · PyPI | 0 | MIT |