`size`

Pack: packagephobia · Connect: https://pipeworx.io/mcp (see Connect below for a single-pack URL)

No MCP client? Call it directly: GET https://gateway.pipeworx.io/v1/tools/size for the schema, then POST the same URL with its arguments for the data.

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 — every tool in the catalog, including this one — or use one-click install buttons:

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

Connect to just the packagephobia pack

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

See Getting Started for client-specific install steps.

size