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Astro Agents - Western Aspects Calculator
x402
Astro Agents - Western Aspects Calculator is a paid API for AI agents from astro-agents-api.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).
Computes planetary aspects (angular relationships) between celestial bodies for a given date, time, and location using the NASA/JPL DE440 ephemeris with deterministic, reproducible results.
Price / call$0.02
Success—
StatusUnknown
How this service works
Deterministic Western + Vedic astrology API for AI agents: JPL DE440 ephemeris, no LLM, reproducible SHA-256 hashes.
Output
Returns a list of planetary aspect objects each containing the two celestial points involved (point_a, point_b), the aspect name (e.g. trine, conjunction), the exact angle, the orb in degrees, the allowed orb, and an exactness percentage. Also includes metadata confirming no LLM was used, the ephemeris version, and a SHA-256 hash of the result for reproducibility verification.
Example use cases
Natal chart aspect analysis
“I was born on March 22, 1985 at 7:15 PM in New York City (40.71°N, 74.01°W). Can you calculate all the major planetary aspects in my natal chart using the tropical zodiac and Placidus house system?”
Electional astrology for event planning
“I'm planning to sign a business contract on December 10, 2025 at 10:00 AM in London (51.51°N, 0.13°W). What aspects are active that day — are there any hard squares or oppositions I should worry about, or are there supportive trines?”
Vedic sidereal aspects for compatibility
“Using the sidereal zodiac with Lahiri ayanamsa, what aspects exist between the planets on January 5, 1992 at 12:30 PM in Mumbai (19.08°N, 72.88°E)? I only need conjunctions, trines, and oppositions with orbs under 3 degrees.”
Technical details
Endpoint
POSThttps://astro-agents-api.vercel.app/v1/western/aspects?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, reproducible planetary aspect calculations verifiable by SHA-256 hash, based on the authoritative NASA/JPL DE440 ephemeris rather than approximations or LLM-generated astrology. It supports both tropical and sidereal zodiacs, multiple house systems, and fine-grained orb control, making it ideal for natal chart analysis, synastry, electional astrology, or any use case requiring scientifically grounded, auditable astrological data.
Side effects
- Missing required date/time fields returns a validation error
- Latitude or longitude out of range (-90 to 90 / -180 to 180) causes rejection
- Invalid timezone string causes a parsing error
- Specifying an orb greater than 15 degrees is rejected by the schema
- Date outside the ephemeris range (1800-01-01 to 2200-01-01) may return an error
- Ambiguous local time near DST transitions may produce unexpected results if ambiguous_time is not specified
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"meta": {
"engine": "astro-agents/1.0.0",
"llm_used": false,
"ephemeris": "NASA/JPL DE440 (1800-01-01..2200-01-01)",
"deterministic": true,
"result_sha256": "d9b6880d14220f7cafea3de8822c09202288b87349b8cd71f67e169591ad39f0"
},
"endpoint": "western/aspects",
"result_excerpt": {
"aspects": [
{
"orb": 0.8,
"angle": 120,
"aspect": "trine",
"point_a": "sun",
"point_b": "saturn",
"orb_allowed": 9,
"exactness_pct": 91.1
},
{
"orb": 2.2,
"angle": 0,
"aspect": "conjunction",
"point_a": "moon",
"point_b": "saturn",
"orb_allowed": 10,
"exactness_pct": 78
}
]
}
}
}Tags
x402
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