Research papers

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

arXiv, PubMed, Crossref and OpenAlex scholarly metadata.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "Research papers": {
      "url": "https://fourzerotwo.si/mcp/v/research",
      "transport": "streamable-http"
    }
  }
}

Measured tools (38)

• crossref__doi read-only

  Title, authors, journal, dates, references count and licence for a DOI. Free within the daily allowance, then $0.002 USDC per call via x402.

  Parameters:

  • doi (required) — string — DOI

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• crossref__search read-only

  Bibliographic search across Crossref works. Free within the daily allowance, then $0.003 USDC per call via x402.

  Parameters:

  • q (required) — string — Query

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• crossref__journal read-only

  Journal title, publisher and DOI counts by ISSN. Free within the daily allowance, then $0.002 USDC per call via x402.

  Parameters:

  • issn (required) — string — ISSN

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• crossref__funders read-only

  Research funders by name, with Funder Registry ids. Free within the daily allowance, then $0.002 USDC per call via x402.

  Parameters:

  • q (required) — string — Funder

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• crossref__members read-only

  Crossref member publishers by name. Free within the daily allowance, then $0.002 USDC per call via x402.

  Parameters:

  • q (required) — string — Publisher

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• pubmed__search read-only

  PubMed ids matching a query (supports PubMed query syntax). A few free samples a day, then $0.002 USDC per call via x402.

  Parameters:

  • term (required) — string — Query

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• pubmed__summary read-only

  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.

  Parameters:

  • id (required) — string — PMIDs, comma separated

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• pubmed__pmc-search read-only

  Free full-text article ids in PubMed Central. A few free samples a day, then $0.002 USDC per call via x402.

  Parameters:

  • term (required) — string — Query

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• pubmed__clinical-trials-search read-only

  PubMed citations that are clinical trial reports for a query. A few free samples a day, then $0.002 USDC per call via x402.

  Parameters:

  • term (required) — string — Query with [pt] filter

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• ror__search read-only

  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.

  Parameters:

  • q (required) — string — Name, acronym or keyword
  • type — string — education, funder, healthcare, company, archive, nonprofit, government, facility, other
  • country — string — 2-letter country code

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• ror__organisation read-only

  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.

  Parameters:

  • id (required) — string — ROR id, e.g. 052gg0110 or https://ror.org/052gg0110

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• ror__affiliation read-only

  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.

  Parameters:

  • affiliation (required) — string — Affiliation text

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• ror__external-id read-only

  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.

  Parameters:

  • id (required) — string — GRID, ISNI, Wikidata QID or Crossref Funder ID

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• ror__relationships read-only

  Parent, child and related organisations of a ROR record. Free within the daily allowance, then $0.001 USDC per call via x402.

  Parameters:

  • id (required) — string — ROR id, e.g. 052gg0110 or https://ror.org/052gg0110

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• scholarly__works-search read-only

  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.

  Parameters:

  • search (required) — string — Query

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• scholarly__work read-only

  One work by OpenAlex id (W…) or "doi:10.…". Free within the daily allowance, then $0.002 USDC per call via x402.

  Parameters:

  • id (required) — string — OpenAlex id or doi:…

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• scholarly__authors-search read-only

  Researchers by name with h-index, works and citation counts. Free within the daily allowance, then $0.002 USDC per call via x402.

  Parameters:

  • search (required) — string — Author name

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• scholarly__author read-only

  One researcher by OpenAlex id or ORCID. Free within the daily allowance, then $0.002 USDC per call via x402.

  Parameters:

  • id (required) — string — OpenAlex id or orcid:…

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• scholarly__institutions-search read-only

  Universities and research institutions with output stats. Free within the daily allowance, then $0.002 USDC per call via x402.

  Parameters:

  • search (required) — string — Institution

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• scholarly__sources-search read-only

  Journals and repositories with impact stats. Free within the daily allowance, then $0.002 USDC per call via x402.

  Parameters:

  • search (required) — string — Journal

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• scholarly__topics-search read-only

  Research topics and fields. Free within the daily allowance, then $0.002 USDC per call via x402.

  Parameters:

  • search (required) — string — Topic

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• scholarly__autocomplete read-only

  Fast title autocomplete across works. Free within the daily allowance, then $0.001 USDC per call via x402.

  Parameters:

  • q (required) — string — Partial title

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• scholarly__citing-works read-only

  Works that cite a given OpenAlex work id. Free within the daily allowance, then $0.003 USDC per call via x402.

  Parameters:

  • work (required) — string — Filter, e.g. cites:W2919115771

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__search read-only

  Search arXiv by keywords, title, author and/or category; sort by relevance or newest. Costs $0.002 USDC per call via x402.

  Parameters:

  • q — string — Keywords (all must match)
  • sort — string — relevance (default), submitted or updated
  • limit — integer — Results, max 50 (default 20)
  • start — integer — Offset for paging
  • title — string — Phrase in the title
  • author — string — Author name
  • category — string — Category, e.g. cs.CL

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__paper read-only

  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.

  Parameters:

  • id (required) — string — arXiv id(s), comma-separated (e.g. 1706.03762)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent read-only

  The newest submissions in any arXiv category. Costs $0.002 USDC per call via x402.

  Parameters:

  • category (required) — string — Category, e.g. math.PR
  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-cs-ai read-only

  The newest arXiv submissions in cs.AI (Artificial Intelligence). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-cs-lg read-only

  The newest arXiv submissions in cs.LG (Machine Learning). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-cs-cl read-only

  The newest arXiv submissions in cs.CL (Computation and Language (NLP)). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-cs-cv read-only

  The newest arXiv submissions in cs.CV (Computer Vision). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-cs-cr read-only

  The newest arXiv submissions in cs.CR (Cryptography and Security). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-cs-ro read-only

  The newest arXiv submissions in cs.RO (Robotics). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-stat-ml read-only

  The newest arXiv submissions in stat.ML (Statistics: Machine Learning). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-quant-ph read-only

  The newest arXiv submissions in quant-ph (Quantum Physics). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-astro-ph read-only

  The newest arXiv submissions in astro-ph (Astrophysics). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-q-fin read-only

  The newest arXiv submissions in q-fin (Quantitative Finance). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-econ read-only

  The newest arXiv submissions in econ (Economics). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• arxiv__recent-q-bio read-only

  The newest arXiv submissions in q-bio (Quantitative Biology). Costs $0.002 USDC per call via x402.

  Parameters:

  • limit — integer — Results, max 50 (default 25)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

Publisher website

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.