AI Prompt Tutorials for Astrology

A complete set of prompt tutorials for AI astrology. Calculations, system prompt, data description, and user prompt for accurate astrological interpretations.

I built AstroPrompt to solve the AI astrology calculation problem. AstroPrompt is a free web workbench that makes calculations from birth data and combines the data with prompts ready for AI chat with ChatGPT, Claude, Gemini, or any AI platform.

Each tutorial on this page shows how AstroPrompt calculates astrological data using the Astrolog calculation engine, with the actual prompts that drive AI chat. AstroPrompt is free to use, and there are no proprietary secrets, so I'm happy to share the implementation details in the hope that you'll make suggestions for improvements.

See the article Astrology Prompts for AI for an overview of AI astrology prompts and the workflow that produces accurate AI astrology output.

Before you get started

The Astrolog command and the three prompts shown in each tutorial are the same data and prompts AstroPrompt sends to the LLM. I built AstroPrompt so you do not have to install Astrolog or assemble the prompts by hand. Try AstroPrompt now; it is FREE and turns every tutorial below into one click.

Prompt Tutorials

AI Prompts for a Birth Chart

A natal-chart prompt with accurate chart data and a psychological-astrology framing.

AI Prompts for a Relationship Chart

A synastry prompt for analyzing the dynamic between two people's charts.

Daily Planner

A day-by-day timing prompt that shows how your day will unfold, with suggestions for best times for your activities.

Weekly Planner

A week-ahead planning prompt that aligns your tasks and goals to the week's astrological influences.

Quarterly Planner

A three-month seasonal-arc prompt covering when to push, when to pause, and what themes to expect during the months ahead.

Travel Planner

A monthly travel-window prompt that flags the best and most challenging dates for travel.

Moon VOC Planner

A Moon void-of-course prompt that lists the "bad astrology days" in any month for practical scheduling.

Mercury Retro Planner

A Mercury retrograde prompt for the year, so you can plan for disruptions in communication, travel, and tech.

World News

Mundane astrology prompt for watching current events unfold with celestial alignment.

Bitcoin News

A Bitcoin genesis-chart transit prompt for an astrological view on price movements and market cycles.

What's Next

This was written in May 2026, describing the data and prompts used in AstroPrompt version 1.0. Astrologers are just beginning to explore the capabilities of AI as a tool for astrological insight. If you've got suggestions for a better dataset or improved prompts, I'd love to hear from you. Email me at hello@timecasters.com.