Packagephobia

liveDeveloperTechnology

Install-size analysis for npm packages — measures full node_modules footprint including transitive deps. Keyless.

1tools
0msauth
free tier50 calls/day

Tools

sizerequired: package

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

Parameters
NameTypeDescription
packagereqstring—
versionoptstring—
▶Try it

Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash
curl -X POST https://gateway.pipeworx.io/packagephobia/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash
curl -X POST https://gateway.pipeworx.io/packagephobia/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"size","arguments":{"package": "example"}}}'

Use with the SDK

Install @pipeworx/sdk to call tools from any TypeScript/Node project.

TypeScript
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("size", {"package":"example"});
ask_pipeworx
// Or ask in plain English:
const answer = await px.ask("install-size analysis for npm packages — measures full node_modules footprint including transitive deps");