{"endpoint":"/api/kyh/natal-chart","method":"POST","description":"Natal chart / birth chart — astrology, planetary positions, zodiac signs, Sun/Moon/Rising, houses, aspects, horoscope interpretation, personality analysis via Swiss Ephemeris","required":["year","month","day","location"],"optional":["hour","minute","second","latitude","longitude","timezone","include"],"notes":"Birth time (hour + minute) is highly recommended for accurate results. Without it, rising sign and houses will be approximate (defaults to noon). Provide location as a string (e.g. 'Kyiv, Ukraine') — coordinates and timezone are auto-resolved.","include_options":["chart","interpretation","agent_prompt"],"example":{"year":1990,"month":5,"day":15,"hour":14,"minute":30,"location":"New York, NY","include":["chart","interpretation","agent_prompt"]}}