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Astro Agents – Western Aspects Calculator
x402
Astro Agents – Western Aspects Calculator is a paid API for AI agents from astro-agent.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-10).
Computes planetary aspects (angular relationships) between celestial bodies for a given date, time, and location using the NASA/JPL DE440 ephemeris, with no LLM involvement and reproducible SHA-256 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 detected aspects between celestial bodies including the aspect name (e.g. trine, conjunction), the two points involved, the exact angular distance, orb used, allowed orb, and exactness percentage. Also includes engine metadata, ephemeris version, determinism flag, and a SHA-256 hash of the result for reproducibility verification.
Example use cases
Natal chart aspect reading
“Calculate all the planetary aspects for a person born on June 21, 1985 at 7:30am in London (51.51° N, 0.13° W, Europe/London timezone) — use tropical zodiac and Placidus house system, and include all planets.”
Vedic astrology aspect check
“Using Vedic sidereal astrology with Lahiri ayanamsa, what aspects exist between the Sun, Moon, Mars, and Saturn on January 1, 2024 at noon UTC at 28.6° N, 77.2° E?”
Custom orb conjunction detection
“For today, October 10, 2024 at 12:00pm civil time in Los Angeles (34.05° N, 118.24° W, America/Los_Angeles), find any conjunctions and oppositions only, using a tight orb of 3 degrees for all planets except the Sun and Moon which can have 5 degrees.”
Technical details
Endpoint
POSThttps://astro-agent.dev/v1/western/aspects?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, reproducible planetary aspect calculations grounded in the authoritative NASA/JPL DE440 ephemeris — especially when you need verifiable outputs (SHA-256 hash), support for both Western tropical and Vedic sidereal systems, flexible house systems, custom orbs, and guaranteed no-LLM computation. Prefer it over generative or LLM-based astrology services when accuracy and reproducibility matter, or when building astrology apps that need consistent, auditable results.
Side effects
- Missing required date/time fields returns validation error
- Latitude or longitude out of valid range (-90 to 90 / -180 to 180) returns schema error
- Invalid timezone string causes parsing failure
- Date outside ephemeris range (1800–2200) may return out-of-range error
- Conflicting datetime fields (both 'datetime' and separate 'date'+'time') may cause ambiguity error
- Invalid celestial point name in 'points' array returns enum validation error
- Orb value exceeding maximum of 15 degrees rejected by schema
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"meta": {
"engine": "astro-agents/1.0.3",
"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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