A lightweight Node.js + Express service for computing BaZi (Four Pillars of Destiny) and Ziwei Dou Shu (Purple Star Astrology) charts.
Built with the iztro engine and deployable on Render.
- Converts birth date/time into BaZi (Heavenly Stems + Earthly Branches)
- Generates full Ziwei Dou Shu chart with palaces, stars, and brightness levels
- Returns clean, structured JSON for easy AI interpretation
- Designed for integration with Custom GPT Actions (like Astrology Bob)
POST /api/chinese_chart
{
"year": 1991,
"month": 1,
"day": 3,
"hour": 14,
"minute": 30,
"gender": "female"
}