Tired of manual seed scripts that break every schema change? Foreign key
violations killing your productivity?
Generate constraint-safe, realistic test data in 5 minutes. Point
Aphelion at your PostgreSQL database, and it handles the rest.
Free forever for local development. No credit card
required.
$ aphelion clone postgres://localhost:5432/mydb --output schema.json
✓ Introspected 12 tables, 47 columns, 15 foreign keys
$ aphelion generate schema.json --output ./output --seed 42
✓ Generated 12 files in 0.4s
$ cd ./output && ./load.sh postgres://localhost:5432/mydb_test
✓ Loaded 12,000 rows in 0.8s
✓ Zero foreign key violationsNo configuration files. No coding. Just works.
Point at your database. Aphelion introspects the schema and generates smart defaults. No YAML, no JSON editing required.
Handles circular dependencies, foreign keys, NOT NULL constraints. Topological sorting ensures perfect referential integrity.
Use --seed flag for reproducible data. Same seed = same data. Perfect for debugging and team collaboration.
--auto-approve flag for automated pipelines. --truncate for clean slate testing. Integrates with GitHub Actions, GitLab CI.
~10,000 rows/second. Generate 100K rows in 10-15 seconds. Minimal overhead for constraint checking.
Supports ltree, JSONB, arrays, enums, custom types. Handles complex PostgreSQL features out of the box.
From zero to realistic test data in 5 minutes
curl -O https://algomimic.com/#download-form
chmod +x aphelion
./aphelion --versionSingle binary. No dependencies. Linux x64 (macOS & Windows coming soon)
./aphelion clone postgres://localhost:5432/mydb \
--output schema.jsonIntrospects your database and creates a JSON config with smart defaults.
./aphelion generate schema.json \
--output ./output --seed 42
cd output && ./load.sh postgres://localhost:5432/mydb_testGenerates realistic, constraint-safe data. Same seed = same data every time.
Spin up realistic test databases for feature development without waiting for production dumps
Generate fresh test data for every CI/CD run. Deterministic seeds ensure reproducible tests
Generate millions of rows to stress-test your queries and indexes
Free forever for local development. No credit card required.
Need more than 1,000 rows? Check out Pro for unlimited rows and CI/CD features.