@nexus-score/mcp-server

MCP (Model Context Protocol) server for Crossref metadata coverage scoring. Use with Claude Desktop or any MCP-compatible AI assistant.

Installation

npm install -g @nexus-score/mcp-server

Or use directly with npx:

npx @nexus-score/mcp-server

Claude Desktop Configuration

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "nexus-score": {
      "command": "npx",
      "args": ["@nexus-score/mcp-server"],
      "env": {
        "CROSSREF_MAILTO": "[email protected]"
      }
    }
  }
}

Config file locations:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

Available Tools

get_member_score

Get the Nexus Score for a Crossref member (publisher).

"Get the Nexus Score for Oxford University Press (member 286)"

search_members

Search for Crossref members by name.

"Search for publishers named Elsevier"

get_journal_score

Get the Nexus Score for a specific journal by ISSN.

"Get the score for Nature (ISSN 0028-0836)"

compare_members

Compare scores between multiple publishers.

"Compare metadata coverage between Elsevier, Springer, and Wiley"

get_recommendations

Get improvement recommendations for a publisher.

"What can PLOS do to improve their metadata coverage?"

Resources

methodology

Access the scoring methodology documentation.

"Explain the Nexus Score methodology"

Environment Variables

• CROSSREF_MAILTO - Your email for Crossref's polite pool (recommended for better rate limits)

Example Queries

1. "What's the Nexus Score for Springer Nature?"
2. "Compare metadata coverage between major academic publishers"
3. "Which publishers have the best ORCID coverage?"
4. "How can Cambridge University Press improve their metadata?"
5. "What does each dimension of the Nexus Score measure?"

License

MIT