{"name":"NatalChart.AI API","version":"v1","description":"Swiss Ephemeris astrology calculations as JSON. Tropical zodiac, Placidus houses, five major aspects. No AI calls.","docs":"https://www.natalchart.ai/developers","openapi":"https://api.natalchart.ai/openapi.json","keys":"https://www.natalchart.ai/developers/keys","auth":"Authorization: Bearer <your key>","plans":{"free":{"requestsPerDay":10,"priceUsdPerMonth":0},"pro":{"requestsPerDay":1000,"priceUsdPerMonth":6.99}},"endpoints":[{"method":"POST","path":"/v1/chart/short","plan":"free","summary":"The short chart: Sun, Moon and Ascendant with degrees, every body's sign, retrograde bodies, dominant element and quality."},{"method":"POST","path":"/v1/chart/full","plan":"free","summary":"The full chart: every body with longitude, sign, degree, speed, retrograde flag and house; the angles; twelve Placidus cusps; the aspects with orbs; element and quality balance; fixed-star contacts."},{"method":"POST","path":"/v1/chart/planets","plan":"free","summary":"Bodies only: longitude, sign, degree within the sign, daily speed, retrograde flag, house."},{"method":"POST","path":"/v1/chart/angles","plan":"free","summary":"Ascendant, Midheaven, Vertex and Part of Fortune."},{"method":"POST","path":"/v1/chart/houses","plan":"free","summary":"The twelve Placidus house cusps."},{"method":"POST","path":"/v1/chart/aspects","plan":"free","summary":"The five major aspects between the bodies, each with its angle and orb, and the orb table used."},{"method":"POST","path":"/v1/chart/elements","plan":"free","summary":"Element and quality balance, with the dominant of each."},{"method":"POST","path":"/v1/chart/fixed-stars","plan":"free","summary":"Fixed-star conjunctions to the natal bodies within 1.5 degrees."},{"method":"POST","path":"/v1/horoscope/daily","plan":"free","summary":"The calculated day: the sky at noon UTC, the Moon's phase, the sky events of the coming week and, with birth data, every transit to the natal chart with its orb. No generated text."},{"method":"GET","path":"/v1/sky","plan":"free","summary":"Planetary positions, Moon phase and the coming week's sky events for a date (?date=YYYY-MM-DD, today by default)."},{"method":"GET","path":"/v1/usage","plan":"free","summary":"Your plan, today's count and when the pool refills. Costs nothing."},{"method":"POST","path":"/v1/transits","plan":"pro","summary":"Every transit event in a window of up to 92 days: exact transit-to-natal aspects by date, sign ingresses and stations."},{"method":"POST","path":"/v1/synastry","plan":"pro","summary":"Two charts compared: inter-chart aspects with orbs, house overlays both ways and a score per life sphere."},{"method":"POST","path":"/v1/solar-return","plan":"pro","summary":"The solar return chart for a year, cast for the birth place or another location."}]}