An embeddable BaZi / Saju four-pillar engine with correct solar-term boundary handling, a public reproducible accuracy benchmark, and 4-language support — a niche Western astrology APIs do not cover.
Self-serve a key in minutes for the embeddable widget — or talk to us about a dedicated OEM integration: custom domain CNAME, 99.9% uptime SLA, and AI-ready four-pillar output for your fortune, dating, or wellness app. Built on the same Saju engine as cheonmyeongdang.
This is a live widget calling saju-api.pages.dev with a demo API key.
Your customers see your brand colors and logo — not ours.
<div id="saju-widget"></div> <script> window.SajuWidgetConfig = { apiKey: 'sajuapi_pro_XXX', lang: 'en', mode: 'bazi', theme: { primary: '#0b2545' }, logo: 'https://your-logo.png', }; </script> <script src="https://saju-api.pages.dev/widget/saju-widget.js" async></script>
Correct solar-term boundary & day-pillar continuity, proven by a public benchmark of 8 independently verifiable cases — clone and re-run it yourself.
Your logo, your colors, your font. CSS custom property injection. No Saju API branding on Pro/Enterprise.
English, Korean, Chinese (Simplified), Japanese. Auto-detected or forced via parameter. Right-to-left ready architecture.
BaZi birth chart, compatibility reading (two-person), and daily fortune — one API key covers all three.
Drop-in JS snippet (1 div + 1 script tag) or iframe URL — works on WordPress, Webflow, Shopify, React, vanilla HTML.
Per-customer key with daily rate limits. Tier-locked: free → dev → pro → enterprise. Upstash Redis rate enforcement.
| Provider | BaZi / 4-Pillar | White-Label Widget | Embed (iframe/JS) | Multi-language | Price / mo |
|---|---|---|---|---|---|
| Saju API ← US | ✓ Native BaZi + Saju | ✓ Full white-label | ✓ JS + iframe | ✓ EN/KO/ZH/JA | $49/mo Pro |
| VedicAstroAPI | Vedic (no BaZi/Saju) | ✗ API only | ✗ No widget | ✓ 21 languages | ~$48/mo (110K calls) |
| DivineAPI | Vedic / sun-sign | WP/Shopify plugin | Plugin only | Limited | $49/mo (horoscope) |
| RoxyAPI | ✗ Western only | ✗ API only | ✗ No widget | ✗ EN only | $39/mo (all domains) |
| Prokerala API | Vedic (no BaZi) | ✗ API only | ✗ No widget | Limited | Credit-based, from ~$12/mo |
Pricing verified June 2026. Sources: VedicAstroAPI pricing · DivineAPI pricing · RoxyAPI 2026 comparison. No provider listed offers a native BaZi/Saju four-pillar widget.
All plans billed monthly. Cancel anytime. 30-day money-back guarantee on paid tiers. PayPal accepted. Need per-view pricing? Email us.
Astrology blogs, horoscope magazines. Add interactive BaZi charts — readers stay longer, share more.
Meditation, yoga, holistic health platforms. Four-pillar insights complement Western astrology or TCM features.
Compatibility mode is a natural fit. Differentiate from Tinder with East-Asian-market BaZi matching.
Career coaching and team-building platforms. BaZi personality typing resonates with Asian enterprise clients.
Personalized gift shops. Embed chart as checkout upsell — "your BaZi profile matched to this gift."
Digital agencies building for East Asian brands. One API key, deployable across unlimited client sites.