`references_count`

Pack: opencitations · Endpoint: https://gateway.pipeworx.io/opencitations/mcp

“How many references does paper [DOI] have” / “how big is the bibliography of [paper]” — outgoing reference count for a DOI. Fast version of references when you only need the number.

Parameters

Name	Type	Required	Description
`doi`	string	yes

Example call

Arguments

{
  "doi": "10.1371/journal.pone.0123456"
}

curl

curl -X POST https://gateway.pipeworx.io/opencitations/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"references_count","arguments":{"doi":"10.1371/journal.pone.0123456"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('references_count', {
  "doi": "10.1371/journal.pone.0123456"
});

Response shape

Field	Type	Description
`count`	integer	Outgoing reference count for the DOI

Full JSON Schema

{
  "type": "object",
  "properties": {
    "count": {
      "type": "integer",
      "description": "Outgoing reference count for the DOI"
    }
  }
}

Connect

Add this to your MCP client config, or use one-click install buttons:

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

See Getting Started for client-specific install steps.

references_count