POST /v1/numerology/challenge-numbers
**Challenge Numbers** Computes the four Challenge Numbers derived from the birth day, month, and year: First Challenge (youth), Second Challenge (midlife), Third / Main Challenge (lifetime), and Fourth Challenge (later life). Each reveals specific karmic obstacles to overcome. **Required:** dob **Optional:** name, system **Returns:** All four challenge numbers with themes, lessons, and bilingual advice for each life phase.
curl -X POST https://api.grahaapi.com/v1/numerology/challenge-numbers -H "Authorization: Bearer sk-test-your-key" -H "Content-Type: application/json" -d '{"dob":"1990-05-15","name":"Rahul Sharma","system":"chaldean"}'Test keys (sk-test-…) are free and unlimited, and return the exact production response structure computed from a fixed sample chart. The response is JSON: {"success": true, "data": {…}, "meta": {…}} with Hindi + English strings, computed on the Lahiri ayanamsa.
| Field | Type | Required | Description |
|---|---|---|---|
dob | string | ✅ | Date of birth in YYYY-MM-DD format |
name | string | — | Full name (optional — needed for name-based calculations) |
system | string | — | Numerology system — 'chaldean' (Vedic/traditional, recommended) or 'pythagorean' (Western) |
{
"dob": "1990-05-15",
"name": "Rahul Sharma",
"system": "chaldean"
}Get a free API key Try it in the playground
/v1/numerology/bhagyank · /v1/numerology/bridge-number · /v1/numerology/business-compatibility · /v1/numerology/career · /v1/numerology/child · /v1/numerology/compound-number