# Research papers (remote · fourzerotwo.si)

arXiv, PubMed, Crossref and OpenAlex scholarly metadata.

- Trust score: 79/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-25

## Components

- remote · `fourzerotwo.si`: 79/100 (this document), [markdown](https://verifymcp.io/servers/si-fourzerotwo-research/mcp-v-research.md), [page](https://verifymcp.io/servers/si-fourzerotwo-research/mcp-v-research)

## Channel facts

- Endpoint: `https://fourzerotwo.si/mcp/v/research`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-25.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 70/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 2307 tokens (~60/item across 38 items; 38 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 43/100
  - Stability observed for 13 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 38 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 39 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Research papers MCP server?

Research papers is a hosted endpoint at https://fourzerotwo.si/mcp/v/research, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

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

### Cursor

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

### VS Code

```json
{
  "servers": {
    "si-fourzerotwo-research": {
      "type": "http",
      "url": "https://fourzerotwo.si/mcp/v/research"
    }
  }
}
```

### Codex

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

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "si-fourzerotwo-research": {
      "type": "remote",
      "url": "https://fourzerotwo.si/mcp/v/research",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add si-fourzerotwo-research --url 'https://fourzerotwo.si/mcp/v/research' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  si-fourzerotwo-research:
    url: "https://fourzerotwo.si/mcp/v/research"
```

### Netclaw

```json
{
  "McpServers": {
    "si-fourzerotwo-research": {
      "Transport": "http",
      "Url": "https://fourzerotwo.si/mcp/v/research"
    }
  }
}
```

### Vellum

```bash
assistant mcp add si-fourzerotwo-research -t streamable-http -u 'https://fourzerotwo.si/mcp/v/research'
```

### Other

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

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-25 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-23 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-21 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-19 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-17 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-14 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-13 (score 73, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-12 (score 73)

First indexed and scored.

## MCP tools (38)

### `crossref__doi` (~53 tokens)

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.

Input parameters:

- `doi` (string, required): DOI

### `crossref__search` (~45 tokens)

Crossref DOI Metadata: Search works

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

Input parameters:

- `q` (string, required): Query

### `crossref__journal` (~50 tokens)

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.

Input parameters:

- `issn` (string, required): ISSN

### `crossref__funders` (~51 tokens)

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.

Input parameters:

- `q` (string, required): Funder

### `crossref__members` (~44 tokens)

Crossref DOI Metadata: Search publishers

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

Input parameters:

- `q` (string, required): Publisher

### `pubmed__search` (~51 tokens)

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.

Input parameters:

- `term` (string, required): Query

### `pubmed__summary` (~58 tokens)

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.

Input parameters:

- `id` (string, required): PMIDs, comma separated

### `pubmed__pmc-search` (~50 tokens)

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.

Input parameters:

- `term` (string, required): Query

### `pubmed__clinical-trials-search` (~58 tokens)

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.

Input parameters:

- `term` (string, required): Query with [pt] filter

### `ror__search` (~95 tokens)

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.

Input parameters:

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

### `ror__organisation` (~82 tokens)

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.

Input parameters:

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

### `ror__affiliation` (~66 tokens)

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.

Input parameters:

- `affiliation` (string, required): Affiliation text

### `ror__external-id` (~74 tokens)

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.

Input parameters:

- `id` (string, required): GRID, ISNI, Wikidata QID or Crossref Funder ID

### `ror__relationships` (~70 tokens)

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.

Input parameters:

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

### `scholarly__works-search` (~53 tokens)

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.

Input parameters:

- `search` (string, required): Query

### `scholarly__work` (~57 tokens)

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.

Input parameters:

- `id` (string, required): OpenAlex id or doi:…

### `scholarly__authors-search` (~50 tokens)

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.

Input parameters:

- `search` (string, required): Author name

### `scholarly__author` (~52 tokens)

Scholarly Works (OpenAlex): Author

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

Input parameters:

- `id` (string, required): OpenAlex id or orcid:…

### `scholarly__institutions-search` (~46 tokens)

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.

Input parameters:

- `search` (string, required): Institution

### `scholarly__sources-search` (~45 tokens)

Scholarly Works (OpenAlex): Search journals

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

Input parameters:

- `search` (string, required): Journal

### `scholarly__topics-search` (~42 tokens)

Scholarly Works (OpenAlex): Search topics

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

Input parameters:

- `search` (string, required): Topic

### `scholarly__autocomplete` (~43 tokens)

Scholarly Works (OpenAlex): Autocomplete works

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

Input parameters:

- `q` (string, required): Partial title

### `scholarly__citing-works` (~60 tokens)

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.

Input parameters:

- `work` (string, required): Filter, e.g. cites:W2919115771

### `arxiv__search` (~129 tokens)

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.

Input parameters:

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

### `arxiv__paper` (~77 tokens)

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.

Input parameters:

- `id` (string, required): arXiv id(s), comma-separated (e.g. 1706.03762)

### `arxiv__recent` (~63 tokens)

arXiv Papers: Newest in a category

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

Input parameters:

- `category` (string, required): Category, e.g. math.PR
- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-cs-ai` (~56 tokens)

arXiv Papers: Newest in Artificial Intelligence

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

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-cs-lg` (~56 tokens)

arXiv Papers: Newest in Machine Learning

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

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-cs-cl` (~60 tokens)

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.

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-cs-cv` (~57 tokens)

arXiv Papers: Newest in Computer Vision

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

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-cs-cr` (~57 tokens)

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.

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-cs-ro` (~55 tokens)

arXiv Papers: Newest in Robotics

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

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-stat-ml` (~58 tokens)

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.

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-quant-ph` (~55 tokens)

arXiv Papers: Newest in Quantum Physics

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

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-astro-ph` (~56 tokens)

arXiv Papers: Newest in Astrophysics

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

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-q-fin` (~55 tokens)

arXiv Papers: Newest in Quantitative Finance

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

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-econ` (~53 tokens)

arXiv Papers: Newest in Economics

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

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

### `arxiv__recent-q-bio` (~57 tokens)

arXiv Papers: Newest in Quantitative Biology

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

Input parameters:

- `limit` (integer): Results, max 50 (default 25)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/si-fourzerotwo-research/mcp-v-research#diagnostics

## Score history

- 2026-10-25: 79
- 2026-10-24: 78
- 2026-10-23: 78
- 2026-10-22: 77
- 2026-10-21: 77
- 2026-10-20: 76
- 2026-10-19: 76
- 2026-10-18: 75
- 2026-10-17: 75
- 2026-10-16: 74
- 2026-10-15: 74
- 2026-10-14: 74
- 2026-10-13: 73
- 2026-10-12: 73

## Common questions

### What is the Research papers MCP server?

Research papers is an MCP server listed in the public MCP registry as si.fourzerotwo/research. arXiv, PubMed, Crossref and OpenAlex scholarly metadata. This page covers its hosted endpoint (https://fourzerotwo.si/mcp/v/research).

### Is the Research papers MCP server safe to use?

Research papers scores 79 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Research papers MCP server expose?

Research papers exposes 38 tools: crossref__doi, crossref__search, crossref__journal, crossref__funders, crossref__members, and 33 more. Their descriptions and schemas cost roughly 2,239 tokens of context every time the server is loaded.

### Does the Research papers MCP server require authentication?

No. We connected to Research papers without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Research papers MCP server still maintained?

Research papers is still listed as active in the MCP registry. We last reached this channel on 25 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://fourzerotwo.si/mcp/v/research
- Website: https://fourzerotwo.si/
- Changelog RSS feed: https://verifymcp.io/servers/si-fourzerotwo-research/mcp-v-research.xml
- Changelog JSON feed: https://verifymcp.io/servers/si-fourzerotwo-research/mcp-v-research.json
- HTML version of this page: https://verifymcp.io/servers/si-fourzerotwo-research/mcp-v-research