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Astro Agents Western Natal Chart API
x402
Astro Agents Western Natal Chart API is a paid API for AI agents from astro-agents-api.vercel.app, paid per call via x402, $0.06/call, status unknown (last checked 2026-10-12).
Computes a deterministic Western astrology natal chart from birth coordinates and time using NASA/JPL DE440 ephemeris, returning planetary positions, house cusps, aspects, and chart summary with a reproducible SHA-256 hash.
Price / call$0.06
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 JSON object with a meta block (engine version, ephemeris used, deterministic flag, result SHA-256 hash) and a result containing: a summary with sun sign, moon sign, rising sign, and chart ruler (modern and traditional); ascendant degree; planetary positions for requested points; house cusp degrees; and calculated aspects between planets based on selected orbs.
Example use cases
Personal birth chart for astrology app
“I was born on March 15, 1985 at 10:30 AM in San Francisco (37.7749° N, 122.4194° W). Can you calculate my full Western natal chart using Placidus houses and tropical zodiac, and tell me my sun sign, moon sign, rising sign, and chart ruler?”
Astrological research reproducibility check
“I need a deterministic natal chart calculation for a historical figure — born January 20, 1920 at 3:00 PM UTC at latitude 48.8566, longitude 2.3522. Use Whole Sign houses and give me the SHA-256 hash so I can verify the result is reproducible.”
Vedic-style sidereal chart comparison
“Can you compute a natal chart for someone born on July 4, 1990 at 9:15 AM in Chicago (41.8781° N, 87.6298° W) using sidereal zodiac with Lahiri ayanamsa and equal houses, so I can compare it to their tropical Western chart?”
Technical details
Endpoint
POSThttps://astro-agents-api.vercel.app/v1/western/natal?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a mathematically precise, reproducible natal chart calculation backed by NASA/JPL DE440 ephemeris data — ideal for astrology apps, research, and AI agents that must guarantee the same input always produces the same output (verified via SHA-256). Prefer this over LLM-based astrology responses when accuracy, auditability, and support for multiple house systems (Placidus, Whole Sign, Koch, etc.) and zodiac types (tropical/sidereal) matter.
Side effects
- Missing required latitude or longitude returns a validation error
- Invalid date/time format causes a parsing failure
- Latitude or longitude out of range (-90 to 90 / -180 to 180) returns a constraint violation
- Unknown timezone string causes a timezone resolution error
- Payment failure (x402) prevents execution and returns a payment-required response
- Orb values exceeding 15 degrees are rejected by schema validation
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": "be1fb244a2d60d64f2996cbccab5d7603af0c17e9127b5cb558c58e72f56adfe"
},
"endpoint": "western/natal",
"result_excerpt": {
"summary": {
"sun_sign": "Taurus",
"moon_sign": "Capricorn",
"chart_ruler": {
"modern": "Mercury",
"traditional": "Mercury"
},
"rising_sign": "Virgo"
},
"ascendant": "10°14'44\" Virgo"
}
}
}Tags
x402
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