mcp-opencitations

OpenCitations MCP — citation index (COCI + general Index API).

Part of Pipeworx — an MCP gateway connecting AI agents to 673+ live data sources.

Tools

Tool	Description
`references`	DOIs cited BY the given DOI.
`citations`	DOIs that cite the given DOI.
`citation_count`	Incoming-citation count for a DOI.
`references_count`	Outgoing-reference count for a DOI.
`metadata`	Bibliographic metadata for one or more DOIs (comma-sep, ≤50).
`citation`	Single citation by Open Citation Identifier (OCI).

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

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

Or connect to the full Pipeworx gateway for access to all 673+ data sources:

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

Instead of calling tools directly, you can ask questions in plain English:

ask_pipeworx({ question: "your question about Opencitations data" })

The gateway picks the right tool and fills the arguments automatically.

MIT