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@1337plus/llmdatagen
@1337plus/llmdatagen/index.js

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Readme

LLM Data Generator

Universal data generator using Large Language Models. Generate structured JSON data with schemas or any text format (Markdown, CSV, emails, etc.) with LLM assistance.

Features

🎯 Schema-driven JSON generation

// Input schema
{
  "name": { "type": "string" },
  "price": { "type": "number", "minimum": 10, "maximum": 1000 }
}

// Generated output
{
  "name": "Wireless Gaming Mouse Pro X",
  "price": 89.99
}

📄 Text format generation

# Generate blog posts, emails, CSV data, SQL scripts, etc.
llmdatagen --config blog-posts.json

# Output: article_1.md
# How AI is Transforming Healthcare in 2025
# 
# The healthcare industry is experiencing a revolutionary...

🤖 Interactive CLI

$ llmdatagen

╔════════════════════════════════════════════╗
║       LLM Data Generator v1.0.8            ║
╚════════════════════════════════════════════╝

👤 Account Info:
  balance: $44.58 of $50.00 (10.8% used)
  
? Select LLM model:
  🤖 Auto Router (selects best available model)
❯ 🆓 Free    Meta: Llama 3.2 3B Instruct
  💰 $0.15/M OpenAI: GPT-4o mini
  
? How many items to generate? 20

📊 Generating 20 items...
  ✓ Generated item 1/20
  ✓ Generated item 2/20
  ...
  
✅ Generated 20 items to output/products.json
💰 Total cost: $0.0042

Live model selection - Always up-to-date models from OpenRouter
Progress tracking - Real-time generation status
Cost estimation - Know costs before and after generation
Validation - Automatic JSON Schema validation
Extensible - Add custom configurations and templates

Installation

# Install globally
npm install -g @1337plus/llmdatagen

# Or use with npx without installation
npx @1337plus/llmdatagen

For alternative installation methods (from source, development setup, troubleshooting), see docs/installation.md.

Quick Start

# Generate data with interactive wizard
llmdatagen

This will:

Display your account information
Let you select a model from live list
Guide you through configuration setup
Start generating data

Note: The tool stores configurations and outputs in your Documents folder:

Configurations: ~/Documents/llmdatagen/configs/
Generated files: ~/Documents/llmdatagen/output/

For detailed usage instructions, command-line options, and advanced features, see docs/usage.md.

Output Formats

The generator supports two output formats:

JSON Format (default)

✅ Schema validation with JSON Schema
✅ Type-safe structured data
✅ Field-level generation control
✅ Perfect for APIs, databases, configurations

Text Format

✅ Any text-based format (Markdown, CSV, SQL, etc.)
✅ No schema constraints
✅ Template variables in prompts
✅ Perfect for content, documentation, scripts

Documentation

Configuration Guide - Detailed guide on creating configurations
Usage Guide - Command-line options and features
Installation - Alternative installation methods
Examples - Technical details for developers

Contributing

Fork the repository
Create your feature branch
Submit a pull request

License

MIT License - see LICENSE file for details