I Built an Astrology API With 100+ Endpoints

Oleg K — Tue, 03 Mar 2026 18:27:54 +0000

If you've ever tried adding astrology features to an app, you know the pain.

Most APIs on the market give you daily horoscopes for 12 zodiac signs and charge $30+/month for the privilege. Need natal charts? Synastry? Hellenistic techniques? Good luck — you're stitching together 3 different services, writing custom calculation logic, and still getting 2-3 second response times.

We built Astrology API to fix that.

What Astrology API Actually Does

One API. 100+ calculation types. Here's a quick breakdown:

Category	What You Get
Raw Data	Planetary positions, house cusps (23 systems), aspects, lunar metrics, eclipses
Chart Analysis	Natal, synastry, composite, transit, solar return, lunar return, progressions
Hellenistic	Essential dignities, annual profections, Arabic parts (97+), sect analysis
Astrocartography	Planetary lines on world maps, relocation scoring, parans
Reports	AI-powered interpretations for natal, synastry, career, life areas — in 9+ languages
Horoscopes	Daily/weekly/monthly/yearly — sun-sign AND personalized
Numerology	Pythagorean + Chaldean systems, life path, expression numbers
Visual Charts	SVG natal wheels, aspect grids, astrocartography maps

A Quick Example

Get a full natal chart with one call:

curl -X POST https://astrology-api.io/api/v1/natal-chart \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "date": "1990-06-15",
    "time": "14:30",
    "location": "New York"
  }'

That's it. No timezone lookups, no coordinate conversions. Pass a city name — we handle geocoding automatically.

Response time? Under 300ms for this. Competitors typically take 2-5 seconds for the same calculation.

How It Compares

Here's the honest comparison:

Feature	Astrology API	DivineAPI ($31-49/mo)	Bloom.be (€29-279/mo)
Calculation types	100+	~15	~30
House systems	23	1	4
Hellenistic techniques	Yes	No	No
Fixed stars	50+	No	Basic
Arabic parts	97+	No	No
Response time	<300ms	1-3s	2-5s
AI interpretations	Yes	Limited	No
Languages	9+	1	3
Free tier	50 req/mo	No	No
Popular plan	$21/mo	$31/mo	€29/mo

Why Developers Actually Use This

1. Zero Astrology Knowledge Required

Every endpoint has a built-in glossary system. Your frontend devs don't need to know what "annual profections" are — the API returns human-readable labels and explanations alongside raw data.

2. The Documentation Is Actually Good

Interactive API docs via RapiDoc, plus a Postman collection with 113+ pre-built examples. Import it and start testing in 30 seconds.

3. It Scales

No hard request caps that suddenly break your app. Batch processing for bulk operations. Webhook support for async calculations. The architecture handles spikes without you thinking about it.

4. AI-Powered Interpretations

Raw planetary data is great for astrology nerds. But if you're building a consumer app, you need readable content. Our interpretation engine uses LLMs to generate personalized, nuanced reports — not the generic "Mercury is in retrograde" copy-paste.

Who's Using It

Astrology apps — natal charts, daily horoscopes, compatibility features
Dating apps — zodiac-based matching and synastry compatibility scores
Wellness platforms — moon phase tracking, personalized timing recommendations
Content platforms — automated horoscope content in multiple languages
Trading tools — yes, really — planetary cycle analysis for market timing

Pricing

We kept it simple:

Free: 50 requests/month (enough to prototype)
Pro: $11/mo — 1,000 requests
Pro Plus: $21/mo — 7,000 requests (most popular)
Ultra: $37/mo — 55,000 credits, all 23 house systems
Business: $99/mo — 220,000 credits, all endpoints
Enterprise: $399+/mo — unlimited, dedicated infrastructure

Higher tiers unlock more house systems and advanced features. No credit card required for the free tier.

Get Started

Sign up at astrology-api.io
Get your API key (instant, no credit card for free tier)
Hit your first endpoint

# Test it right now — planetary positions for today
curl https://astrology-api.io/api/v1/planets/now \
  -H "Authorization: Bearer YOUR_API_KEY"

The free tier gives you 50 requests/month — enough to build a proof of concept and see if it fits your use case.

If you're building anything that touches astrology, numerology, or cosmic timing — give it a try. Happy to answer questions in the comments.

Useful links:

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Oleg K — Fri, 27 Feb 2026 01:34:12 +0000

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DEV Community: Oleg K