10 min read
Composite Chart API: The Midpoint Relationship Method
A composite chart is not synastry. It merges two natal charts into one midpoint chart for the relationship. See the method and the composite chart API.
Blog
Insights, tutorials, and updates from the RoxyAPI team
Recent Posts
11 min read
Annual Profections API: Find Your Lord of the Year
Calculate annual profections and the lord of the year from any birth chart with one API call. See the formula, real response, and no-code widget.
10 min read
Astrocartography API: Planetary Lines for Relocation
Build relocation astrology with the astrocartography API: MC, IC, Ascendant, and Descendant planetary lines from one birth moment, ready to map.
13 min read
Build Your Own Astrology Website: Free Bookable Template
A free MIT template for astrologers, tarot readers and numerologists. Real birth charts, tarot, human design, booking and a blog. You own the code.
12 min read
Fixed Stars, Asteroids, and Arabic Lots: Advanced Natal API
Fixed stars, asteroids, Arabic lots, aspect patterns, progressions, solar arc, and profections. Seven advanced natal endpoints, real responses, one key.
11 min read
Astrology Widget for WordPress: Official RoxyAPI Plugin
Add astrology widgets to WordPress with the official RoxyAPI plugin: install from WordPress.org, add your key, and drop shortcodes. No code required.
11 min read
Build a C#/.NET Insight App: Astrology, Vedic, Tarot
Build a multi-domain insight app in C# with the RoxyApi.Sdk NuGet package. Astrology, Vedic kundli, tarot, numerology across 200+ endpoints, one key.
11 min read
Astrology API for AI Agents: A Grounding Layer Guide
How to pick an astrology API for AI agents: deterministic JSON, Remote MCP, function calling from a live OpenAPI spec, and quota economics.
12 min read
Best Numerology API for Developers: 2026 Buyer Guide
Compare the best numerology APIs for developers: master number handling, karmic debt, Chaldean support, Unicode names, SDKs, and flat pricing.
12 min read
Human Design API Buyer Guide: Bodygraph, Type, Accuracy
What a Human Design API must return and how to verify it: full bodygraph in one call, exact 88 degree solar arc, true nodes, Remote MCP, flat pricing.
9 min read
Geocoding Birth Places for Astrology API Charts
One city name maps to many places and timezones. How to geocode a birth place to the right coordinates and IANA zone before a chart call.
10 min read
Birth Time and Date Input Formats for Astrology APIs
How an astrology API should parse birth time and date input, from HH:MM to a trailing Z, and why 25:00:00 still has to fail with a 400.
Featured Posts
13 min read
Best Tarot APIs for Developers 2026: Features and Pricing
Compare the best tarot APIs for developers: 78-card decks, spreads, seeded draws, card images, MCP, and flat pricing reviewed by RoxyAPI.
12 min read
Best Vedic Astrology API for Kundli and Panchang 2026
Compare RoxyAPI, AstrologyAPI, and Prokerala for kundli, panchang, dasha, and KP: fact-checked features, pricing, and real cost math.