Research papers

si.fourzerotwoPublished by fourzerotwo.siOfficial publisherv1.0.1Updated Oct 24, 2026

arXiv, PubMed, Crossref and OpenAlex scholarly metadata.

The publisher's own server: fourzerotwo

VerifiedStreamable HTTPWeb executableWeb Search & Scraping Knowledge & Memory

Server details

Identifier: si.fourzerotwo/research
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Oct 11, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified that this server's namespace belongs to fourzerotwo.si, which also runs its endpoint. That identifies the publisher; it does not make the server's tools safe.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

Lets an assistant query scholarly metadata from arXiv, PubMed, Crossref and OpenAlex through a hosted remote endpoint.

What you can do: This remote MCP server exposes scholarly metadata from four sources: arXiv, PubMed, Crossref and OpenAlex. An assistant can look up papers, authors and publication records across those services without the user installing anything locally. The manifest does not list individual tool names, so the exact query surface is not documented here.
When to use it: Useful when an assistant needs to find or verify academic literature, citations, or publication metadata across multiple scholarly indexes in one place. It is a reasonable addition for research, literature review, or citation-checking workflows.
Requirements: A remote MCP client that supports streamable HTTP, connecting to the provider's hosted endpoint. No local runtime or package is needed. An optional free API key is supplied through the X-API-Key header; without it the free allowance is 100 calls per day, and with it 500 calls per day.

Before you install

The optional X-API-Key header is a credential and should be treated as a secret. Queries are sent to a third-party hosted service, so search terms and any content included in requests leave the user's machine. The manifest declares no authentication requirement beyond the optional key.

Installation

In SourceWeft

Open Research papers in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/si.fourzerotwo%2Fresearch/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

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

Tools

crossref__doi

Crossref DOI Metadata: DOI lookup

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

Parametersdoirequired

crossref__search

Crossref DOI Metadata: Search works

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

Parametersqrequired

crossref__journal

Crossref DOI Metadata: Journal by ISSN

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

Parametersissnrequired

crossref__funders

Crossref DOI Metadata: Search funders

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

Parametersqrequired

crossref__members

Crossref DOI Metadata: Search publishers

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

Parametersqrequired

pubmed__search

PubMed: Search PubMed

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

Parameterstermrequired

pubmed__summary

PubMed: Article summaries

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.

Parametersidrequired

pubmed__pmc-search

PubMed: Search PubMed Central

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

Parameterstermrequired

pubmed__clinical-trials-search

PubMed: Search clinical trial records

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

Parameterstermrequired

ror__search

Research Organisations (ROR): Search organisations

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.

Parametersqrequiredtypecountry

ror__organisation

Research Organisations (ROR): Organisation by ROR id

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.

Parametersidrequired

ror__affiliation

Research Organisations (ROR): Match an affiliation string

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.

Parametersaffiliationrequired

ror__external-id

Research Organisations (ROR): Lookup by 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.

Parametersidrequired

ror__relationships

Research Organisations (ROR): Parents & children

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

Parametersidrequired

scholarly__works-search

Scholarly Works (OpenAlex): Search papers

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.

Parameterssearchrequired

scholarly__work

Scholarly Works (OpenAlex): Paper by id or DOI

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

Parametersidrequired

scholarly__authors-search

Scholarly Works (OpenAlex): Search authors

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

Parameterssearchrequired

scholarly__author

Scholarly Works (OpenAlex): Author

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

Parametersidrequired

scholarly__institutions-search

Scholarly Works (OpenAlex): Search institutions

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

Parameterssearchrequired

scholarly__sources-search

Scholarly Works (OpenAlex): Search journals

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

Parameterssearchrequired

scholarly__topics-search

Scholarly Works (OpenAlex): Search topics

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

Parameterssearchrequired

scholarly__autocomplete

Scholarly Works (OpenAlex): Autocomplete works

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

Parametersqrequired

scholarly__citing-works

Scholarly Works (OpenAlex): Papers citing a paper

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

Parametersworkrequired

arxiv__search

arXiv Papers: Search papers

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

Parametersqsortlimitstarttitleauthorcategory

arxiv__paper

arXiv Papers: Paper by id

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.

Parametersidrequired

arxiv__recent

arXiv Papers: Newest in a category

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

Parameterslimitcategoryrequired

arxiv__recent-cs-ai

arXiv Papers: Newest in Artificial Intelligence

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

Parameterslimit

arxiv__recent-cs-lg

arXiv Papers: Newest in Machine Learning

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

Parameterslimit

arxiv__recent-cs-cl

arXiv Papers: Newest in Computation and Language (NLP)

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

Parameterslimit

arxiv__recent-cs-cv

arXiv Papers: Newest in Computer Vision

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

Parameterslimit

arxiv__recent-cs-cr

arXiv Papers: Newest in Cryptography and Security

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

Parameterslimit

arxiv__recent-cs-ro

arXiv Papers: Newest in Robotics

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

Parameterslimit

arxiv__recent-stat-ml

arXiv Papers: Newest in Statistics: Machine Learning

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

Parameterslimit

arxiv__recent-quant-ph

arXiv Papers: Newest in Quantum Physics

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

Parameterslimit

arxiv__recent-astro-ph

arXiv Papers: Newest in Astrophysics

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

Parameterslimit

arxiv__recent-q-fin

arXiv Papers: Newest in Quantitative Finance

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

Parameterslimit

arxiv__recent-econ

arXiv Papers: Newest in Economics

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

Parameterslimit

arxiv__recent-q-bio

arXiv Papers: Newest in Quantitative Biology

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

Parameterslimit

Version history

v1.0.1LatestOct 11, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
LicenseNot applicable
A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.