For builders and AI agents
Simple Astro API
The easiest simple astrology API for builders. Get planets and houses from one endpoint.
Built for fast prototyping, AI builders (astrology API AI), and lightweight apps. No complicated astrology options. Just the essentials.

curl -X POST https://api.simpleastroapi.com/natal \
-H "x-api-key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"year": 1990,
"month": 5,
"day": 15,
"hour": 10,
"minute": 30,
"lat": 48.8566,
"lng": 2.3522
}'1. Sign up
Create an account and start the 7-day free trial.
2. Copy your key
Open the dashboard and grab your API key.
3. Make one request
Send birth data and get planets plus houses back.
One endpoint
One job. One clear response.
The product centers on a single endpoint: /natal. It returns only the core building blocks most apps need: planets and houses.
No overwhelming docs tree. No report credits. Perfect as an astrology API AI tool—give your LLM agents quick context without huge context-window bloat.
{
"planets": {
"sun": { "sign": "Taurus", "house": 10 },
"moon": { "sign": "Cancer", "house": 12 },
"mercury": { "sign": "Gemini", "house": 11 }
},
"houses": {
"1": "Leo",
"2": "Virgo",
"3": "Libra",
"4": "Scorpio"
}
}Tiny docs preview
Beginner-friendly by design
Method: POST
Auth: x-api-key: YOUR_API_KEY
Body: year, month, day, hour, minute, lat, lng
Response: planets and houses only
One plan
Simple Astro API
The simplest astrology API AI integration. Keep one clean endpoint, one API key flow, and one dashboard.
- 7-day free trial
- Then $7/month
- 1 simple astro API endpoint
- LLM & AI agent ready
- Hosted MCP access included
- Planets + houses response
- Dashboard access
- Cancel anytime
Frequently Asked Questions
Common questions about the Simple Astro API.
What makes this a "Simple Astro API"?
We stripped away the complexity of traditional endpoints. Instead of hundreds of parameters, you get just planets and houses.
Is this good for Astrology API AI integrations?
Yes! The small JSON response is incredibly token-efficient for LLMs and AI agents, making it the perfect astrology API AI tool for function calling.
Do I need to be an astrology expert?
Not at all. If you can make a POST request, you can use our simple astrology API.