Bundlephobia

Bundlephobia MCP — bundle-size analysis for npm packages. Reports minified + gzipped size, tree-shakeability, dependency count, build time estimates. Keyless.

Part of Pipeworx — an MCP gateway connecting AI agents to 1394+ live data sources.

Tools

• size(package, version?) — bundle size for package (or package@version)
• similar(package, version?) — packages with similar functionality + their sizes
• history(package, version?) — size history across versions (heuristic: queries each version)
• recent_searches() — what other people have been measuring

Notes

Bundlephobia is rate-limited and sometimes slow on first request (it builds + measures the package on demand). Subsequent requests for the same package@version are cached.

Data source

https://bundlephobia.com/api/

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

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

Or connect to the full Pipeworx gateway for access to all 1394+ data sources:

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

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English:

ask_pipeworx({ question: "your question about Bundlephobia data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides
• pipeworx.io

License

MIT