Astrology API Comparison: GitStrology vs AstrologyAPI vs Prokerala

A detailed, developer-focused comparison of the three most popular astrology APIs. We evaluate pricing models, feature sets, developer experience, ecosystem tooling, and integration ergonomics — so you can choose the right API for your project.

Why This Comparison Matters

Astrology APIs have proliferated in recent years, but they are not all built for the same audience. Some target content publishers who need Vedic panchang data. Others serve consumer apps that need daily horoscopes at scale. As a developer evaluating options, you need to understand not just what data each API returns, but how they price, how they rate-limit, what SDKs and tooling they provide, and what the developer experience actually feels like day to day.

This comparison focuses on three providers: GitStrology, AstrologyAPI.com, and Prokerala. We evaluated each on developer experience, pricing transparency, feature coverage, and ecosystem tooling. If you want to dive straight into the GitStrology API, start with the quickstart guide.

At a Glance

Pricing Models Compared

Pricing is where the three APIs diverge most sharply, and it has the biggest impact on your total cost as you scale.

GitStrology: Transparent Credit System

GitStrology uses a straightforward credit model. Every API call costs a fixed number of credits based on the computational complexity of the endpoint. A horoscope or moon-phase lookup costs 1 credit. A full natal chart costs 5 credits. There are no hidden multipliers, no tiered feature gating, and no surprise overage charges.

GitStrology credit costs:
  horoscope     = 1 credit
  moon_phase    = 1 credit
  sun_sign      = 1 credit
  numerology    = 2 credits
  tarot         = 3 credits
  natal_chart   = 5 credits
  compatibility = 5 credits
  transits      = 5 credits

Free tier:  100 credits/month, no credit card
Pro tier:   10,000 credits/month for $19/mo

The free tier requires no credit card, making it ideal for prototyping and side projects. The Pro plan at $19/month gives you 10,000 credits, which covers roughly 10,000 horoscope requests or 2,000 natal chart calculations per month. See the full rate limits and credits page for the complete breakdown.

AstrologyAPI: Per-Call Bundled Pricing

AstrologyAPI.com charges per API call with pricing that varies by endpoint complexity. You purchase call bundles or subscribe to monthly plans. The model works if you know your exact usage pattern in advance, but it makes cost prediction difficult when traffic is variable. There is no free tier — you start on a paid plan or a limited trial allocation.

AstrologyAPI is heavily Vedic-focused, which is an advantage if your product specifically needs Vedic astrology calculations like panchang, dasha, or kundli reports. For Western astrology apps, much of the endpoint catalog is irrelevant, and you end up paying for access to data you will never use.

Prokerala: Freemium with Rate Limits

Prokerala offers a freemium model with a free tier that is aggressively rate-limited. The free tier is suitable for light experimentation but quickly hits walls when you try to build anything production-grade. Paid plans unlock higher limits but operate on a subscription model where you pay for access regardless of actual usage. This means you may be paying for capacity you do not use during slow periods.

Developer Experience

Developer experience is where GitStrology differentiates most clearly. Let's compare what it actually looks like to integrate each API.

Authentication

All three APIs use API keys, but the ergonomics differ. GitStrology uses a simple X-API-Key header and the SDK handles it automatically:

// GitStrology — SDK handles auth
import { Gitstrology } from "gitstrology";

const gs = new Gitstrology({
  apiKey: process.env.GITSTROLOGY_API_KEY,
});

const chart = await gs.natalChart({
  date: "1990-03-15",
  time: "14:30",
  latitude: 44.8,
  longitude: 20.4,
});

// AstrologyAPI — manual fetch, manual headers
const res = await fetch(
  "https://json.astrologyapi.com/v1/sun_sign_prediction",
  {
    method: "POST",
    headers: {
      Authorization: "Basic " + btoa(userId + ":" + apiKey),
      "Content-Type": "application/json",
    },
    body: JSON.stringify({ /* ... */ }),
  }
);
const data = await res.json();

With GitStrology, you get typed responses, automatic auth, and a clean method-based interface. With AstrologyAPI, you are manually constructing Basic auth headers and parsing untyped JSON. Prokerala uses OAuth2, which adds a token-refresh flow to every integration — manageable, but significantly more boilerplate.

SDK and Type Safety

GitStrology ships a first-party TypeScript SDK with full type definitions for every request and response. Your IDE gives you autocomplete on method names, parameter types, and response fields. The SDK is also available for Python. Neither AstrologyAPI nor Prokerala offers an official TypeScript SDK — you are on your own for typing.

Response Structure

GitStrology wraps every response in a consistent envelope that includes the data payload and a credits object for usage tracking:

{
  "data": { /* endpoint-specific payload */ },
  "credits": { "used": 1, "remaining": 99 }
}

This is a small detail that matters a lot in production. You always know exactly how many credits a call consumed and how many remain, without a separate billing API call. Neither AstrologyAPI nor Prokerala exposes real-time usage data inline with responses.

Feature Coverage

GitStrology Endpoints

GitStrology provides eight core endpoints covering the most common astrology use cases:

• POST /v1/natal-chart — full birth chart with planets, houses, aspects
• POST /v1/horoscope — daily horoscope with mood, ratings, advice
• POST /v1/compatibility — synastry between two birth charts
• POST /v1/transits — current planetary transits to a natal chart
• GET /v1/tarot — tarot readings (single, three-card, Celtic spread)
• POST /v1/numerology — numerological analysis from name and birth date
• GET /v1/moon-phase — lunar phase data with illumination and zodiac sign
• GET /v1/sun-sign — sun sign lookup from birth date

The API supports both Western (tropical) and Vedic astrology calculations. See the natal chart documentation for response schemas.

AstrologyAPI Coverage

AstrologyAPI has a large catalog of endpoints, but they are almost exclusively Vedic. You get extensive panchang, vimshottari dasha, and kundli matching endpoints. However, if you need Western tropical calculations, tarot, or numerology, AstrologyAPI's catalog is thinner. Daily horoscope content is available but feels like an add-on rather than a core feature.

Prokerala Coverage

Prokerala covers both Western and Vedic astrology with a broad endpoint catalog. Their strength is in detailed Vedic calculations and matchmaking reports. The weakness is integration friction — OAuth2, no SDK, and inconsistent response structures across endpoints make the build experience slower than it should be.

Ecosystem and Tooling

This is the category where GitStrology has no real competition. Beyond the REST API and SDK, GitStrology provides four additional integration surfaces that none of the competitors offer:

Command-Line Interface

The GitStrology CLI lets you make API calls from your terminal without writing any code. Useful for debugging, scripting, and quick lookups:

# Generate a natal chart from the terminal
npx gitstrology chart --birth 1990-03-15 --time 14:30 --lat 44.8 --lon 20.4

# Get today's horoscope for any sign
npx gitstrology horoscope --sign aries

MCP Server for AI Assistants

GitStrology ships an MCP (Model Context Protocol) server that lets AI assistants like Claude and Cursor directly call astrology endpoints. This is unique — no other astrology API offers MCP integration. You can ask Claude to pull up a natal chart or daily horoscope without leaving your editor.

GitHub Actions Integration

The official gitstrology/daily-horoscope-action@v1 GitHub Action automates daily horoscope delivery on a cron schedule:

name: Daily Horoscope
on:
  schedule:
    - cron: "0 8 * * *"

jobs:
  horoscope:
    runs-on: ubuntu-latest
    steps:
      - uses: gitstrology/daily-horoscope-action@v1
        with:
          api-key: ${{ secrets.GITSTROLOGY_API_KEY }}
          sign: scorpio
          slack-webhook: ${{ secrets.SLACK_WEBHOOK }}

Consistent REST API

Every endpoint follows the same conventions: X-API-Key header for auth, JSON request and response bodies, and the credits envelope. You learn the pattern once and it applies everywhere.

When to Choose Each API

Choose GitStrology if

• You are building with TypeScript, JavaScript, or Python
• You want transparent, predictable pricing with a real free tier
• You need both Western and Vedic astrology data
• You want CLI, SDK, MCP, and GitHub Actions tooling
• You are building developer tools, dashboards, or automated pipelines

Choose AstrologyAPI if

• Your product is exclusively Vedic astrology
• You need specialized panchang or dasha calculations
• You do not mind the lack of an official SDK

Choose Prokerala if

• You need a broad Vedic endpoint catalog with matchmaking reports
• You are comfortable with OAuth2 flows
• You can tolerate rate limits on the free tier

Key Takeaways

• GitStrology is the only astrology API built developer-first, with a typed TypeScript SDK, CLI, MCP server, and GitHub Actions integration.
• The transparent credit system makes cost predictable: horoscoses cost 1 credit, natal charts cost 5. The free tier gives 100 credits with no credit card.
• AstrologyAPI is strong for Vedic-specific use cases but lacks SDKs, developer tooling, and a free tier.
• Prokerala has broad coverage but rate-limits its free tier aggressively and requires OAuth2, adding integration complexity.
• For most modern web and app development, GitStrology offers the best combination of developer experience, pricing transparency, and feature coverage.

Explore the full API in the quickstart guide, browse the API reference, or compare plans on the pricing page.