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arXiv, PubMed, Crossref and OpenAlex scholarly metadata.
MCP endpoint :https://fourzerotwo.si/mcp/v/research · website · measurements and detailsVerify a DOI or find papers via Crossref metadata. $0.005/call via x402.
MCP endpoint :https://paper-lookup-production-56b0.up.railway.app/mcp · website · measurements and detailsSearch open-source research papers across arXiv, OpenAlex, Crossref, PubMed, Semantic Scholar.
Package npm :find-research-papers-mcp · website · measurements and detailsSearch scholarly works and resolve DOIs through Crossref. No key required.
Package npm :crossref-mcp · website · measurements and detailsChecks every LaTeX reference against Crossref, dblp, arXiv, DataCite, PubMed and OpenAlex. No LLM.
Package pypi :paper-preflight · website · measurements and detailsFree scholarly paper and DOI discovery via Crossref. Self-service registration; no invitation.
MCP endpoint :https://donvi108-agent-hub-live-preview.donvi108.workers.dev/mcp · website · measurements and detailsResolve DOIs, search ~155M scholarly works, and fetch references via the Crossref REST API.
MCP endpoint :https://crossref.caseyjhand.com/mcp · website · measurements and detailsSearch 150M+ academic works, journals, and funders via Crossref API.
MCP endpoint :https://aligned-kettledrum--crossref-mcp-server.apify.actor/mcp · website · measurements and detailsResearch papers for AI agents: PubMed, arXiv, Crossref; citations, references, open access texts
MCP endpoint :https://mcp.apify.com?tools=digital_influx/research-papers-mcp · website · measurements and detailsScholarly search: OpenAlex, Crossref, arXiv, OpenCitations and PubMed in one endpoint.
MCP endpoint :https://themineworks--academic-research-mcp.apify.actor/mcp · website · measurements and detailsSearch and retrieve scholarly metadata from the Crossref REST API
Package pypi :crossref-mcp-server · website · measurements and detailsCrossref MCP — wraps the Crossref REST API (academic papers, free, no auth)
MCP endpoint :https://gateway.pipeworx.io/crossref/mcp · website · measurements and detailsFull text of research papers by DOI, arXiv, PMC or OpenReview id, verified against the record
Package pypi :fulltext-article-downloader · website · measurements and detailsFind research papers and arXiv preprints, and get an abstract and free full text from a DOI or id.
MCP endpoint :https://papers.openkrill.app/mcp · website · measurements and detailsAcademic paper search, scientific literature, citation analysis, arXiv & semantic related-work.
MCP endpoint :https://academic-intel-mcp-production.up.railway.app/mcp · website · measurements and detailsAcademic research search across PubMed and arXiv
MCP endpoint :https://research.memoryapi.org/mcp · measurements and detailsSearch 220M+ scholarly papers with abstracts, DOIs, retraction flags and citation links.
MCP endpoint :https://mcp.corroborum.com/mcp · website · measurements and detailsChecks AI-written references against Crossref, PubMed and OpenAlex. Formats citations, PRISMA.
MCP endpoint :https://mcp.pho.chat/mcp · website · measurements and detailsOne call, one paper: everything openly available around it — full text, license, datasets, code…
MCP endpoint :https://gateway.pipeworx.io/research-chain/mcp · website · measurements and detailsSearch and download academic papers from arXiv, PubMed, bioRxiv, medRxiv, Google Scholar, Semantic…
MCP endpoint :https://server.smithery.ai/@adamamer20/paper-search-mcp-openai/mcp · website · measurements and detailsAI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt
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