About Asterwise

Asterwise is an astrology, numerology and tarot API for developers, built by Asterwise Labs Private Limited in Haryana, India. This page says who we are, what we publish so you can check our numbers, and where to find us.

One API, two zodiacs

118 endpoints for sidereal Vedic and tropical Western astrology, numerology, tarot and panchanga, plus 103 MCP tools for AI clients.

Checked against NASA

80 positions compared with JPL Horizons: median 0.046″, 79 of 80 within half an arcsecond. Data and script published.

Same input, same answer

The engine is deterministic and API responses are HMAC-signed, so a chart can be reproduced and verified by anyone who holds the inputs.

Numbers you can audit

Prices per call, endpoint counts generated from the OpenAPI document, and vendor comparisons with a source on every row and a public corrections log.

What Asterwise is

Asterwise is a REST API at api.asterwise.com that computes astrology from birth data and returns structured JSON: Vedic natal charts with a choice of ayanamsa, all sixteen divisional charts, five-level Vimshottari Dasha, yogas, doshas, kundli matching with Rajju and Vedha applied as vetoes, panchanga and muhurta, KP and Lal Kitab, Western natal charts, synastry, transits and progressions, and numerology and tarot alongside. The same calculations are exposed to AI assistants through a remote MCP server at mcp.asterwise.com, and to application code through Python and TypeScript SDKs generated from the OpenAPI document.

It is built for matrimony and matchmaking platforms that need Vedic compatibility scoring, astrology apps that need a dependable ephemeris, and AI products that need real charts instead of guessed ones. Every plan, including the free Sandbox tier, includes every endpoint.

What we publish so you can check us

An astrology API asks you to trust numbers you cannot easily recompute, so we publish the material needed to check them:

If a number on this site is wrong, write to [email protected]. Corrections to the comparison pages are checked within five business days and recorded on the page.

How the engine works

Planetary positions come from the Swiss Ephemeris. Sidereal calls take the ayanamsa as a parameter (Lahiri by default, with Raman and KP available). Vedic charts return both rasi and bhava chalit house positions; Western natal charts offer Placidus, Koch, Equal and Whole Sign houses. Interpretation fields follow classical Jyotish method and are returned as structured data rather than prose, so your product decides how to present them.

The same inputs always return the same result. Responses are signed with HMAC so you can confirm a result came from Asterwise unaltered, and repeat calculations are served from a 30-day cache that is never linked to a person. Details of data handling are on the security page.

The company

Asterwise is built and operated by Asterwise Labs Private Limited, incorporated in Haryana, India, in 2025 (CIN U62011HR2025PTC136714, GSTIN 06ABDCA8258P1Z2) and based in Fatehabad, Haryana. Terms are governed by Indian law; see the terms, privacy policy and refund policy.

About the name. Asterwise Labs Private Limited is not connected to any other organisation, project or product that uses "Aster" or "Asterwise" in its name. Our website is asterwise.com; the API, documentation, MCP server and status page live on its subdomains api, docs, mcp and status.

Where to find us