Best Western Astrology API for Developers 2026

Why Choose Vedika for Western Astrology?

Building Western astrology apps in 2026? You need an API that handles the complexity of natal charts, house systems, aspects, and synastry - without forcing you to learn astronomical calculations.

Vedika API offers 1,128 calculations including full Western astrology support:

• Natal Charts - All house systems (Placidus, Koch, Whole Sign, Equal)
• Synastry - Compatibility analysis between two charts
• Transits - Current planetary positions against natal chart
• Aspects - Conjunctions, trines, squares, oppositions, sextiles
• Zodiac Signs - All 12 signs with detailed interpretations
• Progressions - Secondary progressions, solar arc directions

Quick Start: Get a Natal Chart in 30 Seconds

import requests

response = requests.post(
    "https://api.vedika.io/api/v1/astrology/query",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "question": "Calculate my natal chart and describe the Sun, Moon and Rising signs. Use the Placidus house system.",
        "birthDetails": {
            "datetime": "1990-03-15T14:30:00",   # March 15, 1990, 2:30 PM, New York City
            "latitude": 40.7128,
            "longitude": -74.0060,
            "timezone": "-05:00"
        },
        "system": "western"
    }
)

result = response.json()
print(result["response"])     # the natural-language answer
print(result["birthChart"])   # {"ascendant": ..., "moonSign": ..., "sunSign": ...}

That's it. One endpoint. Natural language. No need to calculate Julian dates or understand ephemeris data. The AI understands what you want.

Western Astrology Features

Synastry Example: Relationship Compatibility

const response = await fetch("https://api.vedika.io/api/v1/astrology/query", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    question: "Compare our compatibility. Show the strongest synastry aspects and the main challenges.",
    birthDetails: {            // Person A: Jan 5, 1988, 10:30 AM, Los Angeles
      datetime: "1988-01-05T10:30:00",
      latitude: 34.0522,
      longitude: -118.2437,
      timezone: "-08:00"
    },
    partnerBirthDetails: {     // Person B: Aug 22, 1990, 3:45 PM, Chicago
      datetime: "1990-08-22T15:45:00",
      latitude: 41.8781,
      longitude: -87.6298,
      timezone: "-05:00"
    },
    system: "western"
  })
});

const result = await response.json();
console.log(result.response);  // the natural-language synastry reading

House Systems Supported

Vedika vs Other Western Astrology APIs

Get Started in 5 Minutes

1. Try the FREE Sandbox - Test all features without an API key at api.vedika.io/sandbox
2. Sign up for production - Get your API key from the Dashboard
3. Copy the code above - Replace YOUR_API_KEY and you're live