`size`

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

Return the publish size and full install size (including dependencies) in bytes for an npm package name and optional version via packagephobia.com.

Parameters

Name	Type	Required	Description
`package`	string	yes	npm package name (scoped allowed)
`version`	string	no	Specific version (default latest)

Example call

Arguments

{
  "package": "react"
}

curl

curl -X POST https://gateway.pipeworx.io/packagephobia/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"size","arguments":{"package":"react"}}}'

TypeScript (@pipeworx/sdk)

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

const result = await pipeworx.call('size', {
  "package": "react"
});

More examples

{
  "package": "@babel/core",
  "version": "7.23.0"
}

Response shape

Field	Type	Description
`package`	string	npm package name
`version`	string	Package version
`installSize`	number	Install size in bytes
`publishSize`	number	Publish size in bytes

Full JSON Schema

{
  "type": "object",
  "properties": {
    "package": {
      "type": "string",
      "description": "npm package name"
    },
    "version": {
      "type": "string",
      "description": "Package version"
    },
    "installSize": {
      "type": "number",
      "description": "Install size in bytes"
    },
    "publishSize": {
      "type": "number",
      "description": "Publish size in bytes"
    }
  }
}

Connect

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

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

See Getting Started for client-specific install steps.

size