MCP server

Crossref

io.github.pipeworx-io/crossref

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Crossref MCP — wraps the Crossref REST API (academic papers, free, no auth)

Website Source

At a glance

Type

MCP server

Publisher

pipeworx.io (verified by the MCP Registry)

Status

Working at last check

Tools

45

Token cost

About 27,215 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http crossref https://gateway.pipeworx.io/crossref/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.crossref]
url = "https://gateway.pipeworx.io/crossref/mcp"

Gemini CLI

{"mcpServers":{"crossref":{"httpUrl":"https://gateway.pipeworx.io/crossref/mcp"}}}

Cursor

{"mcpServers":{"crossref":{"url":"https://gateway.pipeworx.io/crossref/mcp"}}}

VS Code

{"servers":{"crossref":{"type":"http","url":"https://gateway.pipeworx.io/crossref/mcp"}}}

Antigravity

agy mcp add crossref https://gateway.pipeworx.io/crossref/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"crossref","server_url":"https://gateway.pipeworx.io/crossref/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"crossref","server_url":"https://gateway.pipeworx.io/crossref/mcp"}

Tools

• get_journal ~102 tokens
  Get the 5 most recent works from a journal by ISSN (e.g., "2041-1723"). Returns titles, authors, DOIs, and publication dates.
• get_work ~111 tokens
  Get full metadata for a publication by DOI (e.g., "10.1038/nature12373"). Returns title, authors, abstract, journal, publisher, citations, and subjects.
• search_works ~699 tokens
  Search academic papers, books, and datasets via Crossref. For "search works titled X" / finding a SPECIFIC paper by its title, pass `title` (title-scoped — ranks the exact paper first). Beyond keyword search you can SORT by citation count or publication date and FILTER by date range, work type, auth

Browse

• GitHub tools
• GitHub and code hosting
• APIs and testing
• Research papers

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