// no key · no signup · no card
Calculate without a key. Nine endpoints.
Nine endpoints answer anybody: no key, no account, no card. One of them is a full natal chart with houses and aspects. The budget is 30 requests an hour per IP address. The same calls run right on this page.
// 01 / calculators
Run one here
Every button makes a real request to the production API from your browser. Under each result sits the same call as curl, ready to copy and run on your side.
// 02 / keyless
The nine keyless endpoints
That is the whole list. Everything else out of 757 needs a key, and the free-tier key is issued without a card.
| Endpoint | What comes back |
|---|---|
POST /v1/public/chart | Full natal chart: 13 bodies, houses, aspects, antiscia, sect |
POST /v1/public/synastry | Compatibility score and cross-aspects between two charts |
POST /v1/public/human-design | Human Design bodygraph: type, profile, authority, centres, channels |
GET /v1/public/horoscope/daily | Daily horoscope for a sign |
GET /v1/public/horoscope/weekly | Weekly horoscope for a sign |
GET /v1/public/horoscope/monthly | Monthly horoscope for a sign |
GET /v1/public/tarot/daily | Rider-Waite card of the day with position and meaning |
GET /v1/public/moon-phase | Moon phase, illumination, age, moon and sun sign |
GET /v1/public/planet-of-day | Chaldean planetary ruler of the weekday |
// 03 / limits
What the limits are
- 30 requests an hour per IP address, on a sliding window, so nothing needs resetting. Synastry spends three units of that budget because it computes two charts and a matrix; every other call spends one.
- 300 requests an hour per site plus a 600 ceiling per IP if the call comes from a server and carries the X-AstroWay-Site-URL header. That tier is for server-side rendering, where one machine fetches on behalf of every visitor.
- Every response carries a _footer field pointing back at the source. That is the only condition attached to the keyless tier.
// 04 / behind the key
What deliberately stays behind a key
The line follows whether the answer contains prose, not how hard the maths is.
- Interpretation. Geometry goes out to everyone: the keyless chart carries positions and not one paragraph.
- Half of synastry. The aspect matrix and the score are open; the house overlay, composite, Davison and both natal charts are not.
- The rest of the catalogue: transits, progressions, the Vedic branch, Chinese metaphysics, astrocartography, PDF reports.
Need more than nine?
The free key takes no card and opens the rest of the catalogue with a monthly credit budget.