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100

MCP live v0.1.8 MCP 2026-07-28 http ext: skills

crossref-mcp-server

io.github.cyanheads/crossref-mcp-server

Resolve DOIs, search ~155M scholarly works, and fetch references via the Crossref REST API.

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Get before/after evidence when observed tools, schemas, authentication access, availability or the endpoint changes.

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Uptime

100.0%

5 direct probes · 30d

Response

1417ms

last probe

Tools

callable

Resources

readable

Prompts

available

Primary URL

https://crossref.caseyjhand.com/mcp

Score: 100/100

Handshake verified by our own probe.

why this score

pass Answers the MCP handshake 50/50

The handshake and the list calls succeeded on the primary URL.

pass Lists tools, resources or prompts 30/30

7 tools, 1 resources, 0 prompts returned.

pass 3 or more catalogue items 10/10

8 items in total; 3 or more earns these points.

pass Describes itself 10/10

91 characters; more than 30 earns these points.

Tools · 7

crossref_get_work

Resolves a DOI to its full Crossref metadata record: title, authors, editors, affiliations, abstract (when deposited), journal or container with the volume, issue, pages, and article number that locat…

crossref_get_references

Returns the outgoing reference list for a DOI — the works cited by this paper. Each reference includes the deposited citation string and, where Crossref has resolved it, a DOI you can look up with cro…

crossref_search_works

Searches the Crossref works index (~188M records) by free text and/or structured filters. The generic query matches loosely across all fields; scope precisely with the field-specific parameters queryT…

crossref_search_journals

Finds 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. Title-query results page with offs…

crossref_search_funders

Finds funders registered in the Crossref Funder Registry by name or funder DOI. Provide funder_doi for an exact single-funder lookup — the full DOI ("10.13039/100000001"), the bare registry ID ("10000…

crossref_get_member

Resolves a Crossref member ID to its publisher/organization record: primary name, alternate imprint names, owned DOI prefixes, registered DOI counts, a per-work-type breakdown, and per-category metada…

crossref_get_prefix

Resolves a DOI prefix — the registrant portion of a DOI, e.g. "10.1038" — to its owning Crossref member: the publisher name and numeric member ID. Answers "who publishes DOIs starting with 10.1038?" T…

Resources · 1

crossref-guide

Judgment for the crossref_* tools — confirming a citation match, choosing between the journal/funder works lists and a filtered crossref_search_works, Crossref filter syntax (OR on one key, date bound…

skill://crossref-guide/SKILL.md

Skills · 1

crossref-guide

skill://crossref-guide/SKILL.md

1 file

How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

{
  "mcpServers": {
    "crossref-mcp-server": {
      "url": "https://crossref.caseyjhand.com/mcp",
      "transport": "http"
    }
  }
}