Research papers
arXiv, PubMed, Crossref and OpenAlex scholarly metadata.
| Endpoint | https://fourzerotwo.si/mcp/v/research (streamable-http) |
|---|---|
| Registry version | 1.0.1 |
| Now | 38 tools · grade C (75) · pin ts_40c755225ec76c3555e59aa099f2607c · protocol 2025-06-18 |
| First / last listed | 2026-11-15 00:38 UTC / 2026-11-15 00:38 UTC |
| Grade over time | 2026-11-15: C (75), 38 tools |
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Tools: crossref__doi crossref__search crossref__journal crossref__funders crossref__members pubmed__search pubmed__summary pubmed__pmc-search pubmed__clinical-trials-search ror__search ror__organisation ror__affiliation ror__external-id ror__relationships scholarly__works-search scholarly__work scholarly__authors-search scholarly__author scholarly__institutions-search scholarly__sources-search scholarly__topics-search scholarly__autocomplete scholarly__citing-works arxiv__search arxiv__paper arxiv__recent arxiv__recent-cs-ai arxiv__recent-cs-lg arxiv__recent-cs-cl arxiv__recent-cs-cv arxiv__recent-cs-cr arxiv__recent-cs-ro arxiv__recent-stat-ml arxiv__recent-quant-ph arxiv__recent-astro-ph arxiv__recent-q-fin arxiv__recent-econ arxiv__recent-q-bio
crossref__doi | Title, authors, journal, dates, references count and licence for a DOI. Free within the daily allowance, then $0.002 USDC per call via x402. params: doi* |
crossref__search | Bibliographic search across Crossref works. Free within the daily allowance, then $0.003 USDC per call via x402. params: q* |
crossref__journal | Journal title, publisher and DOI counts by ISSN. Free within the daily allowance, then $0.002 USDC per call via x402. params: issn* |
crossref__funders | Research funders by name, with Funder Registry ids. Free within the daily allowance, then $0.002 USDC per call via x402. params: q* |
crossref__members | Crossref member publishers by name. Free within the daily allowance, then $0.002 USDC per call via x402. params: q* |
pubmed__search | PubMed ids matching a query (supports PubMed query syntax). A few free samples a day, then $0.002 USDC per call via x402. params: term* |
pubmed__summary | Title, authors, journal, date and DOI for comma-separated PubMed ids. A few free samples a day, then $0.002 USDC per call via x402. params: id* |
pubmed__pmc-search | Free full-text article ids in PubMed Central. A few free samples a day, then $0.002 USDC per call via x402. params: term* |
pubmed__clinical-trials-search | PubMed citations that are clinical trial reports for a query. A few free samples a day, then $0.002 USDC per call via x402. params: term* |
ror__search | Find research organisations by name, acronym or keyword, optionally filtered by country and type. Free within the daily allowance, then $0.001 USDC per call via x402. params: q*, country, type |
ror__organisation | Full record: names and aliases, types, status, founding year, location, website, domains, external ids. Free within the daily allowance, then $0.0005 USDC per call via x402. params: id* |
ror__affiliation | Turn a free-text affiliation (as printed on a paper) into the matching organisation, with ROR's confidence flag and candidates. Free within the daily allowance, then $0.001 USDC per call via x402. params: affiliation* |
ror__external-id | Find the organisation for a GRID id, ISNI, Wikidata QID or Crossref Funder ID. Free within the daily allowance, then $0.001 USDC per call via x402. params: id* |
ror__relationships | Parent, child and related organisations of a ROR record. Free within the daily allowance, then $0.001 USDC per call via x402. params: id* |
scholarly__works-search | Full-text search of scholarly works, with citations, authors and open-access links. Free within the daily allowance, then $0.003 USDC per call via x402. params: search* |
scholarly__work | One work by OpenAlex id (W…) or "doi:10.…". Free within the daily allowance, then $0.002 USDC per call via x402. params: id* |
scholarly__authors-search | Researchers by name with h-index, works and citation counts. Free within the daily allowance, then $0.002 USDC per call via x402. params: search* |
scholarly__author | One researcher by OpenAlex id or ORCID. Free within the daily allowance, then $0.002 USDC per call via x402. params: id* |
scholarly__institutions-search | Universities and research institutions with output stats. Free within the daily allowance, then $0.002 USDC per call via x402. params: search* |
scholarly__sources-search | Journals and repositories with impact stats. Free within the daily allowance, then $0.002 USDC per call via x402. params: search* |
scholarly__topics-search | Research topics and fields. Free within the daily allowance, then $0.002 USDC per call via x402. params: search* |
scholarly__autocomplete | Fast title autocomplete across works. Free within the daily allowance, then $0.001 USDC per call via x402. params: q* |
scholarly__citing-works | Works that cite a given OpenAlex work id. Free within the daily allowance, then $0.003 USDC per call via x402. params: work* |
arxiv__search | Search arXiv by keywords, title, author and/or category; sort by relevance or newest. Costs $0.002 USDC per call via x402. params: q, title, author, category, sort, limit, start |
arxiv__paper | Full metadata for up to 20 arXiv ids: title, authors, abstract, categories, dates, DOI, journal ref, links. Costs $0.001 USDC per call via x402. params: id* |
arxiv__recent | The newest submissions in any arXiv category. Costs $0.002 USDC per call via x402. params: category*, limit |
arxiv__recent-cs-ai | The newest arXiv submissions in cs.AI (Artificial Intelligence). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-cs-lg | The newest arXiv submissions in cs.LG (Machine Learning). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-cs-cl | The newest arXiv submissions in cs.CL (Computation and Language (NLP)). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-cs-cv | The newest arXiv submissions in cs.CV (Computer Vision). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-cs-cr | The newest arXiv submissions in cs.CR (Cryptography and Security). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-cs-ro | The newest arXiv submissions in cs.RO (Robotics). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-stat-ml | The newest arXiv submissions in stat.ML (Statistics: Machine Learning). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-quant-ph | The newest arXiv submissions in quant-ph (Quantum Physics). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-astro-ph | The newest arXiv submissions in astro-ph (Astrophysics). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-q-fin | The newest arXiv submissions in q-fin (Quantitative Finance). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-econ | The newest arXiv submissions in econ (Economics). Costs $0.002 USDC per call via x402. params: limit |
arxiv__recent-q-bio | The newest arXiv submissions in q-bio (Quantitative Biology). Costs $0.002 USDC per call via x402. params: limit |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.