By **horoscope**, we're talking about the astrological **birth charts**. **Not** horoscope readings or interpretations.

AuLun Ephemeris: NASA-grade astronomical ephemeris and chart engine (WASM). Free for non-commercial use; free attribution-based commercial licenses on request.

High-precision Swiss Ephemeris WebAssembly bindings for TypeScript — comprehensive astronomical calculations including planetary positions, house systems, eclipses, fixed stars, and astrological computations with modern JS/TS support.

Free Human Design API & Gene Keys API — the most tested, Swiss-Ephemeris-validated pure-JS engine for bodygraphs (Type/Authority/Profile), Gene Keys hologenetic profiles and extended astrology (Ascendant/MC/houses). No native build, no ephemeris data file

TypeScript types and interfaces for Swiss Ephemeris

Comprehensive Vedic and Western astrology calculation library powered by Swiss Ephemeris - birth charts, divisional charts, dashas, yogas, aspects, chart patterns, and more

Clean-room TypeScript astrology computation: ephemeris, charts, events, timing techniques, Vedic methods, and citable chart facts. MIT, no AGPL or ephemeris files.

Swiss Ephemeris for Node.js - high precision astronomical calculations with native bindings

Swiss Ephemeris for browsers - WebAssembly astronomical calculations

The foundation of the Node-Jhora Vedic astrology engine. Provides high-precision astronomical data via Swiss Ephemeris (WASM), fundamental Vedic math, and an ergonomic facade for common operations.

Calculate positions of the planets from an geocentric perspective, ASC, MC, houses and aspects providing date, time, and coordinates.

Astrology MCP server — natal charts, transits, synastry, progressions, returns, eclipses, retrogrades. Real ephemeris, MIT-licensed, no AGPL data files.

Browser-shippable astronomical calculation primitives. Shared between the Kriya astrology API engine and downstream offline-capable consumers (Netra v3+).

Comprehensive Vedic astrology engine for Node.js — Panchang, birth charts (Kundli), Vimshottari Dasha, divisional charts, dosha analysis, and planetary remedies. Swiss Ephemeris precision, validated against Drik Panchang.

Public-domain astrology delineations and correspondence data for the Caelus interpretation layer.

MCP server for astrological natal chart calculations

By **horoscope**, we're talking about the astrological **birth charts**. **Not** horoscope readings or interpretations.

Swiss Ephemeris for TypeScript — high-precision astronomical calculations

A JavaScript library for rendering astrological natal charts

A Model Context Protocol (MCP) server that provides access to Swiss Ephemeris astronomical calculations for planetary positions, houses, chart points, and asteroids. Supports both stdio and HTTP transport modes.