Synthetic Data
That Actually
Makes Sense.
Stop writing faker scripts. Generate multi-table datasets where totals add up, FKs are valid, and columns know each other. Open source. Free forever. Actively building towards full data realism.
1,000+ PyPI downloads · 50+ GitHub stars · pip install misata · MIT License
THE PROBLEM WITH FAKER
Your Test Data Is Lying To You
| order_id | total | subtotal | tax | shipping |
|---|---|---|---|---|
| 1 | $247.00 | $891.33 | $12.44 | $67.21 |
| 2 | $55.82 | $30.11 | $8.99 | $3.50 |
| 3 | $999.00 | $45.00 | $2.10 | $1.80 |
| order_id | total | subtotal | tax | shipping |
|---|---|---|---|---|
| 1 | $1,157.59 | $1,108.26 | $20.88 | $28.45 |
| 2 | $713.30 | $680.48 | $7.87 | $24.95 |
| 3 | $892.14 | $851.56 | $18.33 | $22.25 |
totals always = sum of parts
delivered_at always after created_at
every foreign key references a real row
500 order_items for 50 orders, not 500:500
email matches the person's name
cost is always less than price
Design Your Schema Visually
Drag tables, draw relationships, set column types. Then generate synthetic data with one click.
From Idea to Synthetic Dataset in 60 Seconds
Describe or Design
Type a prompt or drag-and-drop your schema in the visual canvas. No SQL required.
AI Agents Analyze
5 specialized AI agents extract schema, infer realistic value ranges, map causal relationships, and enforce consistency rules.
Download Your Data
Export as CSV, JSON, or SQL. FK relationships are valid. Columns are mathematically consistent.
Jai Toor
Co-Founder @ Deepline · Ex-Uber & Capchase
“One-shot results were fantastic. Joins were correct, CRM stages, time series and marketing attribution logic made sense. Revenue recognition held up, and transcripts followed the sales process I prompted. Support tickets showed up post-close only.
This would have taken me weeks to build in 2023.”
Misata is in active development. The open-source library handles multi-table generation with consistency rules and FK integrity. We're building towards full semantic realism — not everything under the hood is production-ready yet. We ship in the open and improve weekly.
Help Us Build the Future of Synthetic Data.
Join developers using Misata to generate realistic test data. Free, open source, and getting better every week.
✓ Free & open source ✓ MIT License ✓ No credit card
Install now → pip install misata