Hey 👋

Just shipped Yarrow — an I Ching ("Book of Changes") divination web app that uses an LLM to write the interpretation.

Live: https://iching.lifefinetuning.com

The flow

User types a question
3 coins are tossed 6 times (the casting itself is pure logic, no AI)
The resulting King Wen hexagram (1 of 64) is identified, plus any changing-line transformation
An LLM steeped in the Wilhelm/Baynes tradition writes the reading
Responds in whatever language you asked in (English, Chinese, etc. — handled by the model)

The hexagram engine is pure logic, not AI. I encode all 64 hexagrams as binary strings and look up the King Wen number. The AI only writes the interpretation — it can never hallucinate a hexagram.
Each reading gets a public shareable URL (/r/[id]) with its own dynamically generated OG image (your question + the hexagram visual).
Anti-abuse: anonymous quota uses an IP+UA hash (not a cookie), so clearing cookies doesn't reset it. Reading slots are reserved BEFORE the AI call so people can't disconnect mid-stream to skip the count.

General UX feedback — is the page clear? Does it feel respectful or like fortune-cookie BS?
I Ching practitioners — does the system prompt feel grounded or shallow?
Other devs — anything you'd structure differently in the auth/payment/share flow?

Solo builder in Malaysia. Happy to answer technical questions or hear honest criticism. 🙏