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Connect CrossRef to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Pull metadata and citation counts directly into your AI agent.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

A futuristic MCP client docking bay
V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 3 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through CrossRef.

  1. 01

    Get crossref doi

    This capability resolves a specific DOI to retrieve complete metadata including title, authors, journal, year, and citation counts.

  2. 02

    Search crossref author

    This capability finds all publications by a specific researcher, returning results sorted by relevance and citation counts.

  3. 03

    Search crossref

    This capability searches the full registry of 140M+ scholarly works using free-text queries to find journals, books, or datasets.

Real work

What teams actually run

01

Automated Bibliography Building

Your agent gathers full bibliographic data for a list of DOIs to create a formatted reference list.

02

Fact Checking

You ask your agent to verify a scientific claim by finding the original published paper and its metadata.

03

Literature Reviews

Your agent searches for all works by a specific author to map out their research contributions.

04

Impact Assessment

You use the agent to check how many times a specific paper has been cited across the registry.

Automate a task

Put CrossRef to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

CrossRef works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put CrossRef to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

967ms average. Fast in production.

CrossRef is checked daily against the live service.

Daily averagePeak 1309ms
Oct 3Today
Fastest day
794ms
Slowest day
1309ms
14-day trend
Stable+3%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 3 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of CrossRef, so you can see the experience inside your AI.

It does not authenticate your account with CrossRef. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

CrossRef Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_tB5OKe9b8ptvjN39Svca4u5g8tQNgsRExGVMuy2H/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — CrossRef capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "crossref-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_tB5OKe9b8ptvjN39Svca4u5g8tQNgsRExGVMuy2H/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up CrossRef in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work CrossRef owners hand off.

This MCP is built for professionals who need to pull verified scientific data into their AI workflows without manual searching.

  • 01

    Academic Researchers

    They hand off the task of resolving DOIs and building bibliographies to their agent.

  • 02

    Science Writers

    They use the agent to instantly retrieve publication details to verify facts and cite sources.

  • 03

    Data Analysts

    They use the agent to pull citation metrics and publisher data for bibliometric studies.

FAQ

Questions CrossRef owners ask.

  • 01

    Do I need an API key to use this MCP?

    No. Vinkius hosts the MCP and manages the connection, so you can start resolving DOIs immediately without your own API key.

  • 02

    Which AI clients can use this capability?

    Any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code, can use this MCP once connected.

  • 03

    What kind of scholarly works can I find?

    You can search for journals, books, conference papers, datasets, and dissertations across all scientific disciplines.

  • 04

    Can I find how many times a paper has been cited?

    Yes. The get_crossref_doi capability provides the citation count for any specific DOI you provide.

  • 05

    How many records does this MCP access?

    The MCP provides access to over 140 million scholarly records from the CrossRef registry.

  • 06

    What exactly is a DOI and why is CrossRef important?

    A Digital Object Identifier (DOI) is a unique, permanent identifier assigned to every published scholarly work. like a social security number for academic papers. CrossRef maintains the world's largest DOI registry with 140M+ records, making it the authoritative source for bibliographic metadata across all publishers globally.

  • 07

    Is authentication or registration required to use this server?

    No. CrossRef's public API is free and open without authentication. Adding a polite email in the User-Agent header (which this server does automatically) grants access to the 'polite pool' with significantly faster response times.

  • 08

    What types of scholarly works can I find through CrossRef?

    CrossRef covers virtually every type of scholarly output: journal articles, book chapters, conference proceedings, preprints, datasets, dissertations, and technical reports. It aggregates metadata from 20,000+ publishers including Elsevier, Springer Nature, Wiley, Oxford University Press, and thousands of smaller publishers worldwide.

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