How to connect
Same URL, five paste targets. Ready surface · Auth required. Not a safe-to-install badge. Handshake this URL
Paste into Settings → MCP or .cursor/mcp.json.
{
"mcpServers": {
"cyanheads-crossref-mcp-server": {
"url": "https://crossref-mcp-server--cyanheads.run.tools"
}
}
}
Paste into .vscode/mcp.json.
{
"mcpServers": {
"cyanheads-crossref-mcp-server": {
"url": "https://crossref-mcp-server--cyanheads.run.tools"
}
}
}
Settings → Connectors → Add → Custom → Web. Paste the URL. Enable in a new chat.
Claude → Settings → Connectors → Add → Custom → Web
Name: crossref-mcp-server
URL: https://crossref-mcp-server--cyanheads.run.tools
OAuth only if this server requires it.
Save, start a new chat, enable the connector.
Developer mode custom connector. ChatGPT cannot reach localhost.
Settings → Apps & Connectors → Advanced → Developer mode ON
Create custom connector
Name: crossref-mcp-server
MCP server URL: https://crossref-mcp-server--cyanheads.run.tools
Auth: none unless the server requires OAuth
New chat → + → Developer mode → enable the connector
Register the HTTPS URL, then claude mcp list.
claude mcp add --transport http cyanheads-crossref-mcp-server \
https://crossref-mcp-server--cyanheads.run.tools
Pass on session/new as mcpServers when the agent advertised HTTP MCP.
[
{
"type": "http",
"name": "cyanheads-crossref-mcp-server",
"url": "https://crossref-mcp-server--cyanheads.run.tools"
}
]
Paste into a README or docs site. The widget loads snippets from Influzer — still not a SAFE badge.
Same handshake clock as this listing (overlay / warm / seed; live tools/list only if that is missing). Indigo is live_ok, amber is auth_required, gray is unreachable. Not a SAFE badge. Stdio listings have no badge.
[](https://www.influzer.ai/mcp/probe?url=https%3A%2F%2Fcrossref-mcp-server--cyanheads.run.tools)
<div data-influzer-install="cyanheads-crossref-mcp-server"></div>
<script async src="https://www.influzer.ai/embed/install.js"></script>
https://www.influzer.ai/embed/mcp/cyanheads-crossref-mcp-server.md
JSON: https://www.influzer.ai/api/v1/install/cyanheads-crossref-mcp-server
Recipes using this server
No published recipes yet for this server.
Listing quality
Observable facts from our catalog and daily probe — not a safe-to-install badge.
- Surface
- Ready surface
- Auth gate
- Auth gate
- Tools source
- tools/list (live)
Observable catalog + probe facts — not a safe-to-install badge. How we verify.
Verification summary
Stored signals only. Not a safety score.
- Verification grade
- A (85)
- Last verified
- Status
- Auth required
- Response time
- 0 ms
- Auth
- Auth gate
- Transport
- http, HTTPS
- Tools indexed
- 5
- 30-day uptime
- 100% of 7 samples over 7 days
Probe history
- · auth_required · 0 ms
- · auth_required · 0 ms
- · auth_required · 0 ms
- · auth_required · 0 ms
- · auth_required · 0 ms
Tools
(5)-
crossref_get_workResolves a DOI to its full Crossref metadata record: title, authors, affiliations, abstract (when deposited), journal or container, publication date, type, license, full-text links, funder acknowledgements, and outgoing reference list. The is_referenced_by_count field reports the total incoming citation count from Crossref; the citing works themselves are not available through Crossref — use OpenAlex for citation graphs.
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crossref_get_referencesReturns the outgoing reference list for a DOI — the works cited by this paper. Each reference includes the raw citation string and, where Crossref has resolved it, a DOI you can look up with crossref_get_work. Reference list coverage varies by publisher; many older works and non-participating publishers have no indexed references. Incoming citations — the works that cite this paper — are not available through Crossref; use OpenAlex for that.
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crossref_search_worksSearches the Crossref works index (~155M records) by free text and/or structured filters. Use the filter parameter for structured filtering (object with hyphen-separated Crossref keys). Sort options: relevance, score, is-referenced-by-count, published, deposited, indexed. Offset-based paging is capped at ~10K results; use cursor="*" to start cursor-based deep paging, then pass the nextCursor value from each response to continue. Cursor and offset cannot be combined.
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crossref_search_journalsFinds Crossref journal records by ISSN or title query. Provide issn for an exact single-journal lookup, or query for title-based search returning up to rows results. Set include_works to true to fetch the journal's most recent registered works in a second call (sequential — requires a resolved ISSN from step 1). Returns journal metadata: title, publisher, ISSN-L, subject areas, and total DOI count.
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crossref_search_fundersFinds funders registered in the Crossref Funder Registry by name or funder DOI. Provide funder_doi for an exact single-funder lookup (accepts the full DOI like "10.13039/100000001" or just the registry ID), or query for name-based search. Set include_works to true to fetch a paginated list of works funded by the first matched funder (adds a second upstream call). Returns funder name, DOI, country, and alternate names.
Tool source: tools/list (live) · last probed 2026-11-05