Detailed Natal Chart
Planetary positions, houses, aspects, and dominants calculated with NASA JPL DE442Q ephemerides.
Psychomantic calculates planetary positions, transits, and lunar cycles from the NASA JPL DE442Q ephemeris. A proprietary calculation engine built for precision and the analysis of astronomical data applied to astrology.
Free plan • Developer API • GDPR-compliant data
Planetary positions, transits, lunar cycles: precise, verifiable calculations.
Planetary positions, houses, aspects, and dominants calculated with NASA JPL DE442Q ephemerides.
Track current planetary movements and their interactions with your natal chart.
Visualize your planetary lines on a world map and discover where your configurations resonate strongest.
Chiron, Vesta, Juno, Pallas and more, interpolated at 1-day steps for high precision.
REST API documented in OpenAPI, API key authentication, quotas and integrated Stripe billing.
100% proprietary engine, no dependency on Swiss Ephemeris. Complete account deletion compliant with GDPR.
Three steps, zero jargon.
Enter your date, time, and place of birth. The engine calculates your planetary positions with precision.
Planetary positions calculated to less than 1 arcminute on the NASA JPL DE442Q ephemeris.
A structured analysis of your configurations translated into clear language.
Astronomical calculations, complementary systems, AI interpretation: a single REST API, ~< 5 µs per calculation, documented in OpenAPI, authenticated by API key.
curl -X POST https://api.psychomantic.com/v1/astro/natal \
-H "X-API-Key: ish_..." \
-H "Content-Type: application/json" \
-d '{"date":"1990-06-15","time":"14:30","latitude":48.8566,"longitude":2.3522}'
Natal charts, transits, synastry, compatibility, solar return, astrocartography, asteroids, moon phase, ephemerides, retrogrades.
Yi King (HLLS), Chinese zodiac, Matrix of Destiny (22 arcana + karmic program), mirror hours.
Chart interpretation and life guide generated from calculated data.
Auth, profiles, saved charts, API keys, usage tracking, Stripe, PNG export, geocoding.
Most modules are free: natal chart, transits, synastry, solar return, astrocartography, asteroids. Some advanced sections and heavy API usage will be offered as a paid option.
What you should know about Psychomantic.
Sign up to be notified at launch and receive news about Psychomantic.
No spam. Unsubscribe anytime.