GET/v1/western/compatibility/zodiac

Western Zodiac Sign Compatibility

Sign-to-sign compatibility without birth data. Based on element and modality affinity (Asterwise heuristic scores). Pass sign names as query parameters: ?sign1=Aries&sign2=Leo. Only the twelve English tropical sign names are accepted (case-insensitive); anything else returns 422.

Request parameters

sign1required

string

First sign: an English tropical sign name such as Aries (case-insensitive).

sign2required

string

Second sign: an English tropical sign name such as Leo (case-insensitive).

Response fields

success

boolean

True if the request succeeded

message

string

Human-readable status message

data

object

data.sign1

string

data.sign2

string

data.element1

string

data.element2

string

data.modality1

string

data.modality2

string

data.element_affinity

string

harmonious | neutral | challenging. From an Asterwise heuristic score: same element 80, fire–air and earth–water 85, other pairs 40–50 (harmonious ≥ 78, neutral ≥ 55).

data.modality_affinity

string

harmonious | neutral | challenging. From an Asterwise heuristic score (cardinal–mutable 75, fixed–mutable 70, mutable–mutable 65, cardinal–cardinal and fixed–fixed 55, cardinal–fixed 50; harmonious ≥ 78, neutral ≥ 55).

data.overall_score

integer

Mean of the element and modality heuristic scores (0–100)

data.description

string

Errors

api_key_invalid

Invalid API key format.

api_key_missing

API key is missing. Include it in the Authorization header as 'Bearer YOUR_KEY'.

api_key_not_found

The provided API key was not found. Verify the key in your Asterwise dashboard.

api_key_revoked

This API key has been revoked.

burst_limit_exceeded

Too many requests per minute. Please slow down.

internal_error

Something went wrong on our end. Please try again, or contact [email protected] if the problem persists. Include your request_id when contacting support.

invalid_request_body

Request body is missing or malformed.

ip_rate_limit_exceeded

Too many requests from this IP address. Please slow down.

monthly_usage_limit_exceeded

Monthly API call limit reached. Upgrade your plan to continue.

payload_too_large

Request body exceeds maximum allowed size of 64KB.

subscription_expired

Your subscription has expired. Please renew at asterwise.com/dashboard to continue.

validation_error

The request couldn't be processed. See the 'details' field for specific field-level issues.

Related endpoints

• Western Compatibility Score
• Western Composite Chart
• Western Synastry

Request

GET·application/json

curl

curl -X GET "https://api.asterwise.com/v1/western/compatibility/zodiac?sign1=Aries&sign2=Leo" \
  -H "Authorization: Bearer YOUR_API_KEY"

Python

import asterwise
from asterwise.api.western_astrology_api import WesternAstrologyApi

configuration = asterwise.Configuration(
    host="https://api.asterwise.com",
    access_token="YOUR_API_KEY",
)

with asterwise.ApiClient(configuration) as client:
    api = WesternAstrologyApi(client)
    result = api.western_compatibility_zodiac(sign1="Aries",
    sign2="Leo")
    print(result)

TypeScript

import { createClient, createConfig, westernCompatibilityZodiac } from 'asterwise';

const client = createClient(createConfig({
  baseUrl: 'https://api.asterwise.com',
  headers: { Authorization: 'Bearer YOUR_API_KEY' },
}));

const result = await westernCompatibilityZodiac({
  client,
  query: {
      "sign1": "Aries",
      "sign2": "Leo"
  },
});

console.log(result.data);

Response

200 OK·application/jsonsigned

{
  "success": true,
  "message": "success",
  "data": {
    "sign1": "Aries",
    "sign2": "Leo",
    "element1": "fire",
    "element2": "fire",
    "modality1": "cardinal",
    "modality2": "fixed",
    "element_affinity": "harmonious",
    "modality_affinity": "challenging",
    "overall_score": 65,
    "description": "Aries and Leo have moderate compatibility with different strengths."
  }
}