v1.0.0 Now Available

Synthetic Data,
Constraint-Safe.

Stop wrestling with broken foreign keys. Aphelion intelligently introspects your PostgreSQL schema and generates realistic, reproducible test data that actually respects your constraints.

Start for Free

$ npm install -g @aphelion/data-generator

Why Developers Love Aphelion

Built by data engineers who were tired of maintaining complex SQL seed scripts.

Constraint Safe

Never worry about foreign key violations again. Aphelion builds a topological dependency graph of your schema.

Circular Resolution

Self-referencing tables? Circular dependencies? We handle them automatically with multi-pass generation strategies.

Deterministic Seeding

Pass a seed and get the exact same dataset every time. Perfect for reproducible CI/CD pipelines and debugging.

Works With Your Existing Schema

No configuration needed to start. We introspect your database, detect types, and map them to realistic Faker generators automatically.

Smart Type Detection Maps `user_email` to `internet.email` automatically
Zero Config Start Just point it at your DB URL and go
JSON Export Export layout to JSON for fine-tuning

bash — 80x24

➜ ~ aphelion introspect postgres://localhost/myapp

> Connected to database 'myapp'
> Found 14 tables
> Detected 3 circular dependencies
> Generating schema map... Done

➜ ~ aphelion generate --rows 1000 --seed 42

> Generating data plan
> Phase 1: Base tables (users, products)...
> Phase 2: Dependent tables (orders, items)...
> Phase 3: Resolving circular refs...
> Successfully generated 14,000 rows in 1.2s

Simple, Transparent Pricing

Start free, upgrade for enterprise-scale features.

Developer

$0/mo

Perfect for side projects and local development.

Unlimited Tables
1,000 Rows per Table
Basic CLI Usage

Download CLI

POPULAR

Pro Team

$49/mo

For teams automating CI/CD pipelines.

Unlimited Rows
CI/CD Auto-Approve Mode
Priority Support
Advanced Custom Generators

Secure payment via Stripe

Synthetic Data, Constraint-Safe.