Research papers
by fourzerotwo.si · remote · no sign-in to list tools · v1.0.1 · published by si.fourzerotwo
arXiv, PubMed, Crossref and OpenAlex scholarly metadata.
Changes · 26
38 tools: 26 change things and 12 only read.
Scanned Oct 21, 2026
- Deletes or cancels0Claude Code: deny
- Can't be undone0Claude Code: ask
- Changes things26Claude Code: ask: see these tools
- Only reads12Claude Code: allow: see these tools
No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.
claude mcp add --transport http research https://fourzerotwo.si/mcp/v/researchTools
Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.
38 tools
Changes things 26Claude Code: ask
arxiv__paperFull metadata for up to 20 arXiv ids: title, authors, abstract, categories, dates, DOI, journal ref, links.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it 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.
Annotations the server declares
- title: arXiv Papers: Paper by id
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recentThe newest submissions in any arXiv category.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest submissions in any arXiv category. Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in a category
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-astro-phThe newest arXiv submissions in astro-ph (Astrophysics).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in astro-ph (Astrophysics). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Astrophysics
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-cs-aiThe newest arXiv submissions in cs.AI (Artificial Intelligence).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in cs.AI (Artificial Intelligence). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Artificial Intelligence
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-cs-clThe newest arXiv submissions in cs.CL (Computation and Language (NLP)).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in cs.CL (Computation and Language (NLP)). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Computation and Language (NLP)
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-cs-crThe newest arXiv submissions in cs.CR (Cryptography and Security).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in cs.CR (Cryptography and Security). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Cryptography and Security
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-cs-cvThe newest arXiv submissions in cs.CV (Computer Vision).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in cs.CV (Computer Vision). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Computer Vision
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-cs-lgThe newest arXiv submissions in cs.LG (Machine Learning).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in cs.LG (Machine Learning). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Machine Learning
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-cs-roThe newest arXiv submissions in cs.RO (Robotics).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in cs.RO (Robotics). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Robotics
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-econThe newest arXiv submissions in econ (Economics).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in econ (Economics). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Economics
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-q-bioThe newest arXiv submissions in q-bio (Quantitative Biology).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in q-bio (Quantitative Biology). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Quantitative Biology
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-q-finThe newest arXiv submissions in q-fin (Quantitative Finance).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in q-fin (Quantitative Finance). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Quantitative Finance
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-quant-phThe newest arXiv submissions in quant-ph (Quantum Physics).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in quant-ph (Quantum Physics). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Quantum Physics
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
arxiv__recent-stat-mlThe newest arXiv submissions in stat.ML (Statistics: Machine Learning).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it The newest arXiv submissions in stat.ML (Statistics: Machine Learning). Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Newest in Statistics: Machine Learning
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
crossref__doiTitle, authors, journal, dates, references count and licence for a DOI.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Title, authors, journal, dates, references count and licence for a DOI. Free within the daily allowance, then $0.002 USDC per call via x402.
Annotations the server declares
- title: Crossref DOI Metadata: DOI lookup
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
crossref__fundersResearch funders by name, with Funder Registry ids.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Research funders by name, with Funder Registry ids. Free within the daily allowance, then $0.002 USDC per call via x402.
Annotations the server declares
- title: Crossref DOI Metadata: Search funders
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
crossref__journalJournal title, publisher and DOI counts by ISSN.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Journal title, publisher and DOI counts by ISSN. Free within the daily allowance, then $0.002 USDC per call via x402.
Annotations the server declares
- title: Crossref DOI Metadata: Journal by ISSN
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
crossref__membersCrossref member publishers by name.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Crossref member publishers by name. Free within the daily allowance, then $0.002 USDC per call via x402.
Annotations the server declares
- title: Crossref DOI Metadata: Search publishers
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
pubmed__summaryTitle, authors, journal, date and DOI for comma-separated PubMed ids.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it 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.
Annotations the server declares
- title: PubMed: Article summaries
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
ror__affiliationTurn a free-text affiliation (as printed on a paper) into the matching organisation, with ROR's confidence flag and candidates.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it 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.
Annotations the server declares
- title: Research Organisations (ROR): Match an affiliation string
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
ror__organisationFull record: names and aliases, types, status, founding year, location, website, domains, external ids.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it 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.
Annotations the server declares
- title: Research Organisations (ROR): Organisation by ROR id
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
ror__relationshipsParent, child and related organisations of a ROR record.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Parent, child and related organisations of a ROR record. Free within the daily allowance, then $0.001 USDC per call via x402.
Annotations the server declares
- title: Research Organisations (ROR): Parents & children
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
scholarly__authorOne researcher by OpenAlex id or ORCID.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it One researcher by OpenAlex id or ORCID. Free within the daily allowance, then $0.002 USDC per call via x402.
Annotations the server declares
- title: Scholarly Works (OpenAlex): Author
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
scholarly__autocompleteFast title autocomplete across works.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Fast title autocomplete across works. Free within the daily allowance, then $0.001 USDC per call via x402.
Annotations the server declares
- title: Scholarly Works (OpenAlex): Autocomplete works
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
scholarly__citing-worksWorks that cite a given OpenAlex work id.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Works that cite a given OpenAlex work id. Free within the daily allowance, then $0.003 USDC per call via x402.
Annotations the server declares
- title: Scholarly Works (OpenAlex): Papers citing a paper
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
scholarly__workOne work by OpenAlex id (W…) or "doi:10.…".No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it One work by OpenAlex id (W…) or "doi:10.…". Free within the daily allowance, then $0.002 USDC per call via x402.
Annotations the server declares
- title: Scholarly Works (OpenAlex): Paper by id or DOI
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
Only reads 12Claude Code: allow
arxiv__searchSearch arXiv by keywords, title, author and/or category; sort by relevance or newest.No findings
Why it is in this group
- The name "arxiv__search" says "search": a word for reading.
Description, as the server wrote it Search arXiv by keywords, title, author and/or category; sort by relevance or newest. Costs $0.002 USDC per call via x402.
Annotations the server declares
- title: arXiv Papers: Search papers
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
crossref__searchBibliographic search across Crossref works.No findings
Why it is in this group
- The name "crossref__search" says "search": a word for reading.
Description, as the server wrote it Bibliographic search across Crossref works. Free within the daily allowance, then $0.003 USDC per call via x402.
Annotations the server declares
- title: Crossref DOI Metadata: Search works
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
pubmed__clinical-trials-searchPubMed citations that are clinical trial reports for a query.No findings
Why it is in this group
- The name "pubmed__clinical-trials-search" says "search": a word for reading.
Description, as the server wrote it PubMed citations that are clinical trial reports for a query. A few free samples a day, then $0.002 USDC per call via x402.
Annotations the server declares
- title: PubMed: Search clinical trial records
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
pubmed__pmc-searchFree full-text article ids in PubMed Central.No findings
Why it is in this group
- The name "pubmed__pmc-search" says "search": a word for reading.
Description, as the server wrote it Free full-text article ids in PubMed Central. A few free samples a day, then $0.002 USDC per call via x402.
Annotations the server declares
- title: PubMed: Search PubMed Central
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
pubmed__searchPubMed ids matching a query (supports PubMed query syntax).No findings
Why it is in this group
- The name "pubmed__search" says "search": a word for reading.
Description, as the server wrote it PubMed ids matching a query (supports PubMed query syntax). A few free samples a day, then $0.002 USDC per call via x402.
Annotations the server declares
- title: PubMed: Search PubMed
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
ror__external-idFind the organisation for a GRID id, ISNI, Wikidata QID or Crossref Funder ID.No findings
Why it is in this group
- The description's first verb is "find": a word for reading.
Description, as the server wrote it 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.
Annotations the server declares
- title: Research Organisations (ROR): Lookup by external id
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
ror__searchFind research organisations by name, acronym or keyword, optionally filtered by country and type.No findings
Why it is in this group
- The name "ror__search" says "search": a word for reading.
Description, as the server wrote it 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.
Annotations the server declares
- title: Research Organisations (ROR): Search organisations
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
scholarly__authors-searchResearchers by name with h-index, works and citation counts.No findings
Why it is in this group
- The name "scholarly__authors-search" says "search": a word for reading.
Description, as the server wrote it Researchers by name with h-index, works and citation counts. Free within the daily allowance, then $0.002 USDC per call via x402.
Annotations the server declares
- title: Scholarly Works (OpenAlex): Search authors
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
scholarly__institutions-searchUniversities and research institutions with output stats.No findings
Why it is in this group
- The name "scholarly__institutions-search" says "search": a word for reading.
Description, as the server wrote it Universities and research institutions with output stats. Free within the daily allowance, then $0.002 USDC per call via x402.
Annotations the server declares
- title: Scholarly Works (OpenAlex): Search institutions
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
scholarly__sources-searchJournals and repositories with impact stats.No findings
Why it is in this group
- The name "scholarly__sources-search" says "search": a word for reading.
Description, as the server wrote it Journals and repositories with impact stats. Free within the daily allowance, then $0.002 USDC per call via x402.
Annotations the server declares
- title: Scholarly Works (OpenAlex): Search journals
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
scholarly__topics-searchResearch topics and fields.No findings
Why it is in this group
- The name "scholarly__topics-search" says "search": a word for reading.
Description, as the server wrote it Research topics and fields. Free within the daily allowance, then $0.002 USDC per call via x402.
Annotations the server declares
- title: Scholarly Works (OpenAlex): Search topics
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
scholarly__works-searchFull-text search of scholarly works, with citations, authors and open-access links.No findings
Why it is in this group
- The name "scholarly__works-search" says "search": a word for reading.
Description, as the server wrote it 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.
Annotations the server declares
- title: Scholarly Works (OpenAlex): Search papers
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Install
Pinned to version 1.0.1. Values in angle brackets are yours to fill in.
claude mcp add --transport http research https://fourzerotwo.si/mcp/v/researchRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__research__crossref__search",
"mcp__research__pubmed__search",
"mcp__research__pubmed__pmc-search",
"mcp__research__pubmed__clinical-trials-search",
"mcp__research__ror__search",
"mcp__research__ror__external-id",
"mcp__research__scholarly__works-search",
"mcp__research__scholarly__authors-search",
"mcp__research__scholarly__institutions-search",
"mcp__research__scholarly__sources-search",
"mcp__research__scholarly__topics-search",
"mcp__research__arxiv__search"
],
"ask": [
"mcp__research__crossref__doi",
"mcp__research__crossref__journal",
"mcp__research__crossref__funders",
"mcp__research__crossref__members",
"mcp__research__pubmed__summary",
"mcp__research__ror__organisation",
"mcp__research__ror__affiliation",
"mcp__research__ror__relationships",
"mcp__research__scholarly__work",
"mcp__research__scholarly__author",
"mcp__research__scholarly__autocomplete",
"mcp__research__scholarly__citing-works",
"mcp__research__arxiv__paper",
"mcp__research__arxiv__recent",
"mcp__research__arxiv__recent-cs-ai",
"mcp__research__arxiv__recent-cs-lg",
"mcp__research__arxiv__recent-cs-cl",
"mcp__research__arxiv__recent-cs-cv",
"mcp__research__arxiv__recent-cs-cr",
"mcp__research__arxiv__recent-cs-ro",
"mcp__research__arxiv__recent-stat-ml",
"mcp__research__arxiv__recent-quant-ph",
"mcp__research__arxiv__recent-astro-ph",
"mcp__research__arxiv__recent-q-fin",
"mcp__research__arxiv__recent-econ",
"mcp__research__arxiv__recent-q-bio"
],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as research. Review it before you use it.