Research papers MCP Server

by fourzerotwo Your server? Claim it

answering

Research papers is answering right now. Last checked 9 min ago. It exposes 38 tools.

arXiv, PubMed, Crossref and OpenAlex scholarly metadata.

Uptime history 3 hours of history

3 hours agonow

100.0%

Uptime 24h

9 of 9 checks

Tools

read from the server

328 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Research papers every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add research --transport http https://fourzerotwo.si/mcp/v/research

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "research": {
      "url": "https://fourzerotwo.si/mcp/v/research"
    }
  }
}

~/.codex/config.toml

[mcp_servers.research]
url = "https://fourzerotwo.si/mcp/v/research"

.cursor/mcp.json

{
  "mcpServers": {
    "research": {
      "url": "https://fourzerotwo.si/mcp/v/research"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "research": {
      "url": "https://fourzerotwo.si/mcp/v/research"
    }
  }
}

Available tools 38

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

arxiv

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.

arxiv__recent

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

arxiv__recent-astro-ph

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

arxiv__recent-cs-ai

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

arxiv__recent-cs-cl

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

arxiv__recent-cs-cr

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

arxiv__recent-cs-cv

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

arxiv__recent-cs-lg

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

arxiv__recent-cs-ro

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

arxiv__recent-econ

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

arxiv__recent-q-bio

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

arxiv__recent-q-fin

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

arxiv__recent-quant-ph

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

arxiv__recent-stat-ml

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

arxiv__search

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

scholarly

scholarly__author

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

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.

scholarly__autocomplete

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

scholarly__citing-works

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

scholarly__institutions-search

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

scholarly__sources-search

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

scholarly__topics-search

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

scholarly__work

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

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.

crossref

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.

crossref__funders

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

crossref__journal

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

crossref__members

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

crossref__search

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

ror

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.

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.

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.

ror__relationships

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

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.

pubmed

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.

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.

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.

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.

Endpoints

URL	Transport	State	Latency	Checked
https://fourzerotwo.si/mcp/v/research	streamable-http	answering	259 ms	9 min ago

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Research papers — questions

Answers built from our own checks of this server.

What can Research papers do?

It exposes 38 tools, read directly from the server on our last check. Among them: arxiv__paper, arxiv__recent, arxiv__recent-astro-ph, arxiv__recent-cs-ai, arxiv__recent-cs-cl, arxiv__recent-cs-cr and 32 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is Research papers mostly used for?

Its tools cluster around arxiv, scholarly and crossref. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is Research papers working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 9 of 9 checks got a reply (100.0%), average response time 328 ms. The bar chart above shows every period we have measured.

How do I connect Research papers?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Research papers need an API key?

No. Research papers completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 38 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Research papers?

It answers our handshake in 328 ms on average, which is faster than 42% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.