Synastry API FAQs

Question 1

How accurate are the astrological calculations?

Accepted Answer

All planetary positions and astrological calculations within the Synastry API are performed by Roxy Ephemeris, which is rigorously verified against NASA JPL Horizons data to ensure the highest level of astronomical and astrological precision.

Question 2

What kind of output does the Synastry API provide?

Accepted Answer

The API returns a comprehensive response including a numerical compatibility score, a detailed list of every inter-aspect with its orb and strength, and a narrative analysis outlining the relationship's overall dynamic, strengths, and potential challenges.

Question 3

Does this API support multiple spiritual or astrological systems?

Accepted Answer

Yes, with a single API key, you gain access to 10 distinct spiritual domains. This includes Western astrology, Vedic astrology, numerology, tarot, biorhythm, I Ching, crystals, dreams, and angel numbers, offering broad utility for diverse applications.

Question 4

Are there SDKs available for easier integration?

Accepted Answer

Yes, the Synastry API offers convenient SDKs for both TypeScript (on npm) and Python (on PyPI). It also leverages a streamable HTTP MCP server, simplifying integration and enabling developers to quickly build robust applications.

Question 5

What is the Synastry API used for?

Accepted Answer

The Synastry API is designed to analyze the astrological compatibility between two individuals' natal charts. It calculates inter-aspects and generates a weighted compatibility score (0-100), along with narrative insights into relationship strengths and challenges.

Synastry API

Synastry API

Key Features

Use Cases

Key Features

Use Cases