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unpkg.ai

unpkg.ai is an AI service that generates JavaScript ESM modules on demand, using a large language model (LLM) to instantly create modules based on prompts. Its biggest feature is zero friction: no registration, no API key, no authentication. Users only need to request through the GET /esm/{prompt}.js endpoint to get a usable ES module, making it suitable for dynamic plugin systems and top-down development. Generated modules are permanently cached and distributed instantly, with support for long CDN cache headers. Officially provided examples include currency formatting, a tip calculator, a password generator, a color palette generator, Minesweeper, a rich text editor, an interactive data dashboard, and more.

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About this tool

unpkg.ai is an AI-driven ESM (ECMAScript Module) module generation service that uses a large language model to generate JavaScript modules on demand based on user-provided prompts. Its core philosophy is "zero friction": no registration, no API key, and no authentication are required, and it can be used directly.

Purpose

This service is aimed at scenarios that require instant generation of JavaScript modules, especially applications with dynamic plugin systems and projects that adopt a "top-down" development approach. Developers can "imagine any module you need" and then obtain a ready-to-use ES module by requesting a prompt.

Main capabilities

  • On-demand generation of ESM modules: Generate JavaScript modules through natural language prompts.
  • Zero-friction use: No registration, no API key, no authentication.
  • Permanent caching: Generated modules are permanently cached and delivered instantly after caching.
  • CDN-ready: Provides long cache headers to optimize performance.
  • Prompt syntax support: Supports typed syntax for functions and objects, for example functions:functionName(param1:type1,param2?:type2):ReturnType; objects:{property1:type1,property2?:type2}.

Usage

This service provides the following API endpoints:

  • GET /esm/{prompt}.js — Generate an ES module.
  • GET /health — Health check.
  • GET /llms.txt — LLM-friendly documentation.

In code, you can directly request /esm/{prompt}.js to obtain a module. The official site also provides interactive examples, including: Currency Formatter, Tip Calculator with Bill Splitting, Secure Password Generator, Color Palette Generator, Complete Minesweeper Game, Rich Text Editor, and Interactive Data Dashboard.

Applicable scenarios

  • Plugin systems that need to dynamically generate modules.
  • Rapid prototyping or top-down coding.
  • Lightweight integration scenarios that want to avoid registration and key management.

Limitations

Details such as the quality of generated modules, model selection, rate limits, and costs (if introduced in the future) are not provided in the available information. Before use, it is recommended to consult the official documentation for the latest information.

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