Bundlephobia

live DeveloperPackages

Bundle-size analysis for npm packages — minified + gzipped, tree-shakeability, dependency count. Keyless.

4 tools
0ms auth
free tier 50 calls/day

Tools

size required: package

Bundle size analysis.

Parameters
Name Type Description
package req string —
version opt string —
record opt boolean —
▶ Try it
similar required: package

Packages with similar functionality + their sizes.

Parameters
Name Type Description
package req string —
version opt string —
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history required: package, versions

Compare size across recent versions.

Parameters
Name Type Description
package req string —
versions req string —
▶ Try it
recent_searches

Recent searches on bundlephobia.com.

No parameters required.

▶ 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/bundlephobia/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/bundlephobia/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("bundle-size analysis for npm packages — minified + gzipped, tree-shakeability, dependency count");