Build with Cronozen

Cronozen is a vertical SaaS operating system. You don’t build from scratch — you build on top of a platform that already handles multi-tenancy, authentication, billing, and audit trails.

What You Get Out of the Box

Multi-Tenant Isolation

Row-level data isolation, scoped database queries, center-based access control — ready from day one.

SSO & Auth

Central authentication (auth.cronozen.com), JWT tokens, actor family linking, social login (Kakao, Apple, Google).

Decision Proof (DPU)

SHA-256 hash chains for tamper-evident audit trails. Every decision is provable.

White-Label

Custom domains, branding, landing pages. Your customer sees their brand, not yours.

Billing

Toss Payments integration, subscription management, plan-based feature gating.

AI Automation

Workflow engine, pgvector embeddings, decision support with governance guardrails.

Use Cases

Rehabilitation & Therapy Platform

Build a center management system for rehabilitation facilities.

What you build:        Therapy scheduling, progress tracking, parent portal
What Cronozen handles: Multi-center isolation, therapist-patient matching,
                       DPU session proof, voucher billing, parent cross-center view

Key APIs: Centers, Schedules, DPU, Membership White-label example: slowpace.co.kr — a branded rehab center platform running on Cronozen infrastructure.

Education & Training LMS

Build HRD-Net compliant remote training or workshop management.

What you build:        Course content, assessment design, training programs
What Cronozen handles: HRD-Net compliance (heartbeat, EMON, FDS), QR attendance,
                       DPU proof, sequential learning gates, billing

Key APIs: LMS Learning, Assessment, Attendance, EMON Compliance: 27+ HRD-Net regulatory requirements built in. EMON electronic monitoring integration included.

Welfare Center Management

Build a welfare service management system for elderly care, disability support, or community services.

What you build:        Service programs, case management, reporting
What Cronozen handles: Multi-project settlement, compliance monitoring,
                       consent tracking, audit trails, schedule optimization

Key APIs: Centers, Schedules, DPU, Compliance

Partner Platform (Franchise / White-Label)

Build a franchise management platform where you onboard and manage multiple centers.

What you build:        Partner dashboard, center analytics, custom branding
What Cronozen handles: Center provisioning, cross-center analytics,
                       revenue share tracking, white-label DNS/proxy, SSO

Key APIs: Partner, Provisioning, White-Label Config

AI Governance Platform

Build compliance tooling for organizations using AI in regulated industries.

What you build:        Policy management, risk assessment UI, audit reports
What Cronozen handles: DPU hash chains, 5-level governance guards, evidence lifecycle,
                       JSON-LD export, chain verification, 6W responsibility extraction

Key APIs: DPU, Compliance, Audit

Integration Patterns

Pattern 1: White-Label SaaS

Deploy your own branded instance on a custom domain.

Your domain (brand.co.kr)
    ↓ CloudFlare Worker
Cronozen infrastructure
    ↓ Multi-tenant isolation
Your center's data only

Setup time: ~2 hours with the White-Label Guide

Pattern 2: Hub Integration

Connect your existing app to Cronozen via SSO and API.

// Your app authenticates via Cronozen SSO
const sso = await fetch('https://cronozen.com/api/auth/sso/token', {
  method: 'POST',
  headers: { Authorization: `Bearer ${opsToken}` },
  body: JSON.stringify({ targetApp: 'your-app' }),
});

// Your app calls Cronozen APIs for data
const schedules = await fetch('https://cronozen.com/api/schedules', {
  headers: { Authorization: `Bearer ${token}` },
});

Pattern 3: DPU as a Service

Use Cronozen’s DPU engine as a standalone audit trail for your existing application.

from cronozen import CronozenClient

client = CronozenClient(token="your-token")

# Record any decision from your app
dpu = client.create_dpu(
    content="Model v2.1 approved for production deployment",
    reference_type="ml-model-approval",
    reference_id="model_v2.1",
    tags=["ai-governance", "production"]
)

# Later: prove the decision was made and unaltered
verification = client.verify_dpu(dpu["id"])
assert verification["valid"] == True

Getting Started

Quickstart

First API call in 5 minutes

cURL Examples

Copy-paste ready API examples

TypeScript SDK

Full client library with types

OpenAPI Spec

Import into Postman, Insomnia, or AI tools

Getting Started

Architecture

Authentication

Tenant System

AI Agents

Compliance

Guides

Examples

API Reference

Build with Cronozen

Build with Cronozen

What You Get Out of the Box

Multi-Tenant Isolation

SSO & Auth

Decision Proof (DPU)

White-Label

Billing

AI Automation

Use Cases

Rehabilitation & Therapy Platform

Education & Training LMS

Welfare Center Management

Partner Platform (Franchise / White-Label)

AI Governance Platform

Integration Patterns

Pattern 1: White-Label SaaS

Pattern 2: Hub Integration

Pattern 3: DPU as a Service

Getting Started

Quickstart

cURL Examples

TypeScript SDK

OpenAPI Spec

​Build with Cronozen

​What You Get Out of the Box

Multi-Tenant Isolation

SSO & Auth

Decision Proof (DPU)

White-Label

Billing

AI Automation

​Use Cases

​Rehabilitation & Therapy Platform

​Education & Training LMS

​Welfare Center Management

​Partner Platform (Franchise / White-Label)

​AI Governance Platform

​Integration Patterns

​Pattern 1: White-Label SaaS

​Pattern 2: Hub Integration

​Pattern 3: DPU as a Service

​Getting Started

Quickstart

cURL Examples

TypeScript SDK

OpenAPI Spec

Build with Cronozen

What You Get Out of the Box

Use Cases

Rehabilitation & Therapy Platform

Education & Training LMS

Welfare Center Management

Partner Platform (Franchise / White-Label)

AI Governance Platform

Integration Patterns

Pattern 1: White-Label SaaS

Pattern 2: Hub Integration

Pattern 3: DPU as a Service

Getting Started