📆 Use Cases Appendix

📆 Use Cases Appendix

This document contains practical use cases to unlock the full power of the Node.js Sandbox MCP server. You can dynamically install any npm packages during execution, save files, and run completely isolated experiments in fresh Docker containers.

All the listed use cases have been tested. If you find a use case you'd like to support but that doesn't currently work, please open an issue. Or, if you want to add your own cool use case, feel free to open a Pull Request!

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Generate a QR Code

Create and run a JS script that generates a QR code for the URL `https://nodejs.org/en`, and save it as `qrcode.png`.

**Tip:** Use the `qrcode` package.

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Test Regular Expressions

Create and run a JavaScript script that defines a complex regular expression to match valid mathematical expressions containing nested parentheses (e.g., ((2+3)_(4-5))), allowing numbers, +, -, _, / operators, and properly nested parentheses.

Requirements:

undefined

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Create CSV files with random data

Create and execute a js script which generates 200 items in a csv. The CSV has full name, random number and random (but valid) email. Write it in a file called "fake_data.csv"

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Scrape a Webpage Title

Create and run a JS script that fetches `https://example.com`, saves the html file in "example.html", extracts the `` tag, and shows it in the console.

**Tip:** Use `cheerio`.

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Create a PDF Report

Create a JavaScript script with Node.js that generates a PDF file containing a fun "Getting Started with JavaScript" tutorial for a 10-year-old kid.

The tutorial should be simple, playful, and colorful, explaining basic concepts like console.log(), variables, and how to write your first small program. Save the PDF as getting-started-javascript.pdf with fs

Tip: Use `pdf-lib` or `pdfkit` for creating the PDF.

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Fetch an API and Save to JSON

Create and run a JS script that fetches data from the GitHub Node.js repo (`https://api.github.com/repos/nodejs/node`) and saves part of the response to `nodejs_info.json`.

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Markdown to HTML Converter

Write a JavaScript script that takes a Markdown string, converts it into HTML, and saves the result into a file named content_converted.html.

Use the following example Markdown string:

# Welcome to My Page

This is a simple page created from **Markdown**!

- Learn JavaScript
- Learn Markdown
- Build Cool Stuff 🚀

Tip: Use a library like `marked` to perform the conversion.

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Generate Random Data

Create a JS script that generates a list of 100 fake users with names, emails, and addresses, then saves them to a JSON file called "fake_users.json".

**Tip:** Use `@faker-js/faker`.

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