How to Use the CrossRef Alternative MCP in Claude Code

Q: How do I use Claude Code and CrossRef Alternative to check an author's works?

From your terminal, run a claude command telling it to search for works by that author's name. It will use the searchworks tool and you can pipe the results to jq to format a list of their publications.

Q: Can I find a CrossRef member's prefixes with Claude Code and CrossRef Alternative?

Yes. Use the searchmembers tool via the Claude Code CLI to find the organization. The returned data for each member includes their name, ID, and all associated DOI prefixes.

Q: Is it possible to get a list of all licenses using CrossRef Alternative in Claude Code?

Absolutely. Just run a command to call the getlicenses tool. It will return a JSON array of all known licenses, including their names and URLs, which you can then use in other scripts.

Pipe metadata from 150M+ academic works directly into your shell scripts and CI/CD pipelines with Claude Code.

See Vinkius in Action

Works with every AI agent you already use

…and any MCP-compatible client

MCP Servers - Free for Subscribers

Connect CrossRef Alternative MCP to Claude Code

Create your Vinkius account to connect CrossRef Alternative to Claude Code and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

GDPR Free for Subscribers

Setup CrossRef Alternative with Claude Code

Ask AI about this MCP

ChatGPT

Claude

Perplexity

Pull research data right in your terminal

Run a command to find papers on a specific topic. Claude Code uses the `search_works` tool, and you can pipe the raw JSON output directly to tools like `jq` to extract just the DOIs, titles, or author names you need. There's no need to open a browser or write a full script for a quick lookup. It’s a fast, direct way to query the CrossRef Alternative database and integrate its data into your existing command-line workflows.

Automate publication tracking in CI/CD

Set up a GitHub Action that runs on a schedule. Your job can use Claude Code to call `search_works`, filtering for a specific journal or author. If new works are found, the script can trigger a notification or update a project file. This turns the MCP server into a component of your automated infrastructure. You can monitor the academic landscape and react to new publications without any manual intervention. It's built for headless environments.

Script bulk metadata lookups

If you have a text file with one DOI per line, you can use a simple shell script to process it. Just `cat` the file and pipe it to a command that tells Claude Code to use the `get_works_by_doi_list` tool. The output is clean, structured data ready for the next step in your pipeline. It’s way faster than hitting a web API in a loop, since this tool is designed for exactly this kind of bulk operation.

Setup guide

Set up CrossRef Alternative MCP in Claude Code

Prerequisites

Claude Code CLI installed (npm install -g @anthropic-ai/claude-code)
Active Vinkius subscription with a valid endpoint token

1

Run the add command

Open your terminal and run the command shown on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com. Use --scope user to make it available across all projects.
2

Verify the connection

Start a Claude Code session and type /mcp to list connected servers. You should see crossref-alternative-mcp with a green status indicator.
3

Start using tools

Ask Claude Code something like "Check my latest CrossRef Alternative transactions." It will automatically discover and invoke the available CrossRef Alternative tools.

Terminal

claude mcp add --transport http crossref-alternative-mcp https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

Get your connection token →

Prerequisites

Claude Code CLI installed
Active Vinkius subscription with a valid endpoint token

1

Open the config file

Create or edit .mcp.json in your project root for project-level scope, or ~/.claude.json for user-level scope.
2

Add the CrossRef Alternative MCP

Paste the JSON snippet shown on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Code

Start a new Claude Code session. Type /mcp to confirm the server is connected. The tools will be automatically available in your conversation.

.mcp.json

{
  "mcpServers": {
    "crossref-alternative-mcp": {
      "type": "url",
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by CrossRef. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

Why Choose Vinkius

Vinkius connects your tools to AI with real-time monitoring and automatic cost savings — all from one dashboard.

Connect CrossRef Alternative now

Real-time monitoring

Live

visibility into every interaction

Connect your favorite tools to your AI and see exactly what's happening — every request, every response, in real time.

Built-in savings

60%

lower AI costs

Vinkius compresses data between your apps and your AI automatically. Lower bills every month — no configuration required.

Single dashboard

One

place for every integration

Every tool your AI connects to, managed from a single screen. One account, complete control.

Common questions about CrossRef Alternative MCP in Claude Code

From your terminal, run a `claude` command telling it to search for works by that author's name. It will use the `search_works` tool and you can pipe the results to `jq` to format a list of their publications.

Yes. Use the `search_members` tool via the Claude Code CLI to find the organization. The returned data for each member includes their name, ID, and all associated DOI prefixes.

Absolutely. Just run a command to call the `get_licenses` tool. It will return a JSON array of all known licenses, including their names and URLs, which you can then use in other scripts.

It uses a single Vinkius endpoint token. When you add the server with the `claude mcp add` command, that token is stored locally in your `~/.claude.json` file and sent as a header with each request. The server itself is stateless.

The data you send—search queries and DOIs from your terminal—is only used to fulfill your request. Vinkius processes each call in a stateless, ephemeral instance. Nothing about your query is logged or stored, and your access token is the only credential involved.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

OpenAI Agents SDK sdk-python

Google ADK sdk-python

Pydantic AI sdk-python

Vercel AI SDK sdk-typescript