A place and a time in. Every chart out. Send a birth moment and place, get back natal charts and house cusps, sidereal kundli and panchanga, a full astrocartography and relocation suite, and transit timing. Positions derive from JPL DE441 — the reference ephemeris — computed directly for the exact moment, not looked up in a table or proxied to a third party.
Pick a discipline, then a tab, fill in the inputs, and hit run. Live tabs call the actual gateway. Start with Complete Chart: give a place name and we resolve the coordinates and timezone for you, or switch to Coordinates to pass an exact lat/lon — either way it opens a clean, full read-out on its own page. Every other live tab opens its raw JSON response on its own page, so you can see exactly what each verb returns. The Astrocartography tab is one part of a full relocation suite (see below).
The full chart call returns decision-ready output: the derived fields report generators and interpretation apps normally have to build themselves, plus the bodies serious astrologers ask for and most APIs leave out.
Every field above is a real key in the live chart response. Nothing here is computed on your side.
World lines, paran crossings, and local-space bearings — all in the one call — plus place-relative queries almost nobody else exposes.
Every planet's rise, set, MC, and IC line across the whole world — plus the paran latitudes where lines cross and local-space azimuth/altitude bearings — for one birth moment, in a single call.
Which planetary lines pass near any chosen point on Earth, and exactly how close, for one birth moment.
The cities nearest a specific planet's specific angle line — pick the body and the angle.
The nearest cities to every planetary line at once — the whole world's crossings in one response.
Every planet's stations, ingresses and events across a year, ready to drop into an app or a notification feed — plus personal transits, chart transits, and lifelong activation windows.
No lookup table, no third-party feed. The gold-standard source, computed directly — and reproducible at population scale.
Positions derive from JPL DE441 — the reference ephemeris professional astronomy and software are built on.
Every position is computed from first principles for that exact moment — not looked up in a table, not interpolated, not proxied.
Positions match to under 1e-12 degrees against Swiss Ephemeris and Astrodienst — the exact engines you already trust.
Same input, same bytes out — reproducible across millions of charts and long transit spans. Built for back-testing and research.
Every figure here is measured on this engine, not a marketing estimate.
| Capability | NOUS Astrology API | Typical astrology SaaS API | Desktop astrology software |
|---|---|---|---|
| Disciplines from one endpoint | Western, Vedic, astrocartography, transits | usually one, sometimes split into separate products | varies by product |
| Median full-chart latency | 250 µs | 200–800 ms | instant, but not scriptable over HTTP |
| House systems | 13 | 1–3 | ~20 (library-dependent) |
| Sidereal (ayanāṃśa) support | 4 systems, chart and transit | often a separate product | varies by product |
| Astrocartography suite | ACG world lines, parans, local-space bearings, lines near a place, nearest cities | rarely any ACG at all | ACG in some products |
| Asteroids, nodes, Chiron, Lilith, declinations | all in the chart | usually planets only | varies by product |
| Retrograde & direct stations | every planet, one call | rarely exposed | manual lookup |
| Tropical + sidereal in one call | yes — one flag | usually separate requests/products | varies by product |
| Source ephemeris | JPL DE441, computed directly | inherits an upstream library | reference-grade |
Grouped by discipline. Every verb is a real call against the same gateway.
Year, month, day, hour, minute, latitude, longitude — or a place name, resolved internally. Plain query parameters, no SDK required.
Western natal, sidereal Vedic, astrocartography, or transits — the same birth data drives every one.
Positions, cusps, lines, and transit hits are computed from JPL DE441 for that exact moment — including historical time zones and DST, the number-one cause of wrong charts, resolved internally.
Charts, houses, aspects, nakshatras, lines, or transit dates in a flat, predictable response.
Place and time in — nothing else. No geocoder, no timezone API, no sunrise service, no ephemeris to license or maintain. Your world today is roughly five vendors; ours is one call.
Resolve the location, handle historical time zones, compute every chart plus the full relocation suite — from a single endpoint. Stop maintaining calculation code; the peak-hour compute spikes go away and your engineers build product instead.
Self-hosting Swiss Ephemeris today? You carry two costs most teams forget: its commercial license fee, or the AGPL obligation to open-source anything you serve over a network. Our engine is independent — neither one applies to you.
Not just a generic sidereal chart. Panchanga returns tithi, karana, yoga, and vara — plus solar maasa, solar rashi, and the Tamil calendar — alongside 4 ayanāṃśa systems, full kundli, and nakshatra with pada.
Plain query parameters over HTTP. No SDK to install, no client library to version. Flat, predictable JSON back — the same response shape across every discipline.
Call it with any HTTP client. Nothing to install, nothing to keep in sync with a release cadence.
Every input is a plain query parameter — year, month, day, hour, lat, lon. Readable, cURL-able, debuggable.
Predictable keys, the same shape across disciplines. Parse once, reuse everywhere.
Pay for calls, not seats. Costs track your actual traffic, not your headcount.
{
"ok": true,
"fields": {
"sun": "24°03′ Gemini",
"moon": "14°14′ Pisces",
"ascendant": "5°09′ Virgo",
"mc": "28°02′ Taurus",
"house_system": "Placidus"
},
"raw": "SUN 84.0493 GEM, MOON 344.2370 PIS, ASC 155.1425, MC 58.0349"
}
One integration for natal, Vedic, relocation, and forecast features — no separate vendors to stitch together.
Bulk-produce charts, kundli, paran tables, and transit timelines for PDF/print reports at scale.
Call two charts and compare them on your end, or rank cities by planetary line in real time as a user adjusts birth data.
Reproducible, bit-exact positions across large populations of charts and long spans of transits.
Usage-based tiers — costs track your actual traffic. One credit is one basic chart; richer calls cost a few credits. Start free and go break the playground before we ever talk money.
/v1/acg returns world lines, paran crossings, and local-space compass bearings in one call, and the /v1/acg/near, /v1/acg/cities, and /v1/acg/cities/all routes answer place-relative questions — which lines pass near a place, and the nearest cities to a line. Local-space bearings are rarer than ACG itself. The astrocartography suite is a Growth-and-up feature./v1/planet/events returns every planet's notable events across a year in one call: retrograde and direct stations, conjunctions, oppositions, greatest elongations, and closest approaches, each timestamped.dual=1 with an ayanamsha on the natal chart call to get tropical and sidereal positions together. Four ayanāṃśa systems: Lahiri, Raman, Krishnamurti, Fagan-Bradley. Panchanga also returns solar maasa, solar rashi, and the Tamil calendar.The NOUS Astrology API is an independent product: a single endpoint that turns a place and a time into every chart — Western, Vedic, astrocartography, and transits — computed directly on JPL DE441. It's part of the Nous ARK family of independent tools, each sold on its own merits.
Every position is computed directly on JPL DE441 — the reference ephemeris behind the world's observatories — to 0.0001-arcsecond precision, orders of magnitude finer than the truncated ephemerides most services inherit. Cross-check any result against the engines you already trust; you're priced by usage.
Comparing APIs, running a high-volume workload, or want enterprise terms? Start a conversation — no price gate, just a chat about your use case.