# Research papers

> arXiv, PubMed, Crossref and OpenAlex scholarly metadata.

- name: si.fourzerotwo/research
- version: 1.0.1
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 91/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/si.fourzerotwo%2Fresearch
- tools: https://api.protogrid.dev/v1/servers/si.fourzerotwo%2Fresearch/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "research": {
      "type": "http",
      "url": "https://fourzerotwo.si/mcp/v/research",
      "headers": {
        "X-API-Key": "${X_API_KEY}"
      }
    }
  }
}
```

Placeholders to fill: `${X_API_KEY}`.

## Trust

- hygiene: 80
- liveness: 99
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-97% +updated-9d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 91/100 (strong)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 38 of 38 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 3,816 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 38, about 3,816 tokens to load them all
- tool set hash: 3a189eff5d27a3c37250a31279028007
- badge: [![protogrid quality](https://protogrid.dev/badge/si.fourzerotwo/research.svg)](https://protogrid.dev/servers/si.fourzerotwo/research)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://fourzerotwo.si/mcp/v/research (streamable-http, auth none, reachable true, uptime30d 0.9705882)

## Packages

_none_

## Tools (38)

- `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.
- `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.
- `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.
- `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.
- `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.