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Numerology systems disagree with each other constantly. These are the conventions this API uses, the places the tradition splits, and the details that matter when you put a chart in production.
What a production numerology integration leans on once the first chart works, from one key per environment, key rolling and version pinning to typed errors, request IDs, quota headers and batch backfills.
A step-by-step tutorial for a small Flask numerology app. It takes a name and a birthdate, calls a numerology API, caches the chart, and shows life path, destiny and soul urge numbers.
A correct life path calculator in about ten lines of JavaScript, the conventions that make a full chart harder than it looks, and how to call a numerology API from Node.js instead.
A developer's checklist for evaluating any numerology API, covering documented conventions, master numbers, determinism, privacy, error handling, quotas, an OpenAPI spec, a free tier, real names and batch requests.
A practical guide to integrating a numerology chart endpoint — the request, the response shape, the three fields that surprise people, and how to cache it properly.
The two systems assign different numbers to the same letters and disagree about what a name even is. A side-by-side comparison, with the practical consequences for anyone computing charts.
Karmic debts are not values a chart field holds. They are totals passed through during reduction, which is why they are easy to miss and easy to get wrong.
Whether Y counts as a vowel changes the Soul Urge and Personality numbers for millions of names. The tradition genuinely disagrees — here is what the rules are and why a tool must pick one.
Master numbers stop reduction in Pythagorean numerology, which means a field you typed as a single digit can suddenly return two. Here is where they come from and how to handle them.
The Life Path number is the most-quoted figure in Pythagorean numerology, and the shortcut most calculators use gets it wrong. Here is the correct method, with worked examples.