Blog
Updates & Guides
From calculation engines to cosmic timing — lessons from building OpenEphemeris.
2026-04-23
BaZi Gets Serious: Six New Analytical Endpoints for the Four Pillars
OpenEphemeris now exposes six professional-grade BaZi analytical endpoints — Ten Gods, Luck Pillars, Annual Pillar, compatibility, element balance, and all 24 Solar Terms — each validated against canonical doctrinal sources.
chinese-astrologybaziapichangelogfour-pillars2026-04-01
The Developer's Guide to Astrology APIs
A practical guide to integrating astrological calculation into your application — what an astrology API provides, how to evaluate options, and how to make your first call.
developersastrology-apitutorialrest-apinatal-chart2026-04-01
Turn Claude into a Master Astrologer (No Code Required)
Connect OpenEphemeris to Claude in five minutes. Get a real birth chart — planetary degrees, house placements, and transits calculated from NASA JPL data, not AI guesswork.
claudemcpastrologyhow-tobeginner2026-04-01
What Is an Ephemeris? (A Practical Guide for Developers and Curious People)
An ephemeris is a table of planetary positions over time — the foundation of astrology, astronomy, and navigation. Here is what it is, how it works, and how to use one via API.
explainerephemerisastronomyastrologybeginner2026-04-01
Why AI Gets Astrology Wrong (And What Actually Fixes It)
AI assistants sound confident about astrology but frequently invent planetary positions. Here is why it happens, why it matters, and the architectural fix that eliminates it.
aiastrologyhallucinationaccuracymcp