Overview

AstroAsk is a calculation API. It returns structured astronomical and astrological data — real JSON numbers at full double precision, computed with Swiss Ephemeris — for developers building astrology products: matchmaking apps, daily-content platforms, research tools, or AI agents.

What you get

• 78 endpoints, one subscription. Vedic (planets, houses, nakshatra, dasha, doshas, panchanga, muhurta), Western (natal, synastry, transits, progressions), compatibility scoring and chart images — every call costs exactly one request, regardless of endpoint.
• Granular by design. Every endpoint answers one question — /moon-sign, /dasha/current, /dosha/manglik — so you request exactly what you need and the meter stays honest. For a full birth chart, /batch runs up to 50 calls in one HTTP request.
• Full precision, real types. Longitudes like 331.43152605600557 as JSON numbers — never rounded, never stringified.
• Charts as images. North Indian charts and Western wheels as SVG or PNG, ready to embed.
• 21 languages. Pass lang and localized names arrive in the same structured shape.

Base URL

https://api.astroask.app/v1

Every route is also available under the /api/v1 prefix — the two mounts are byte-identical aliases.

Response envelope

Every endpoint uses the same envelope:

{ "success": true, "data": { } }

{ "success": false, "error": "INVALID_DATE", "message": "Date must be ISO 8601 format: 1990-01-15T10:30:00" }

Where to start

1. Quickstart — first call in under five minutes.
2. Authentication — keys, rotation, limits.
3. API reference — every endpoint, generated from the live OpenAPI spec so it can never drift from the code.