| What it does | Synthetic test data generator for PostgreSQL that reads your live schema and generates realistic data without production data
| Open-source tool that turns an OpenAPI spec or schema into a local, runnable twin
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| Stage | Startup
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| Founded | 2025
| 2023
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| Based in | SK
| US
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| Pricing model | Freemium
| Open source
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| Pricing | Free plan: $5 of monthly credits ($10 with work email), around 8 seeding runs per month on a 30-table schema. Basic plan: $16/month with $32 of monthly credits (2x payment), around 50 runs per month. Premium plan: $69/month with $180 of monthly credits (2.6x payment), around 300 runs per month, prio
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| Key features | - Reads live database schema to generate coherent test data automatically
- Generates realistic data at scale from hundreds to tens of millions of rows
- Maintains foreign key integrity and constraint satisfaction
- Generates localized data with culturally appropriate names and formats
- Works as CLI, MCP server for AI editors, and CI/CD pipeline step
- Handles complex schemas with composite keys and multi-level dependencies
- Plan preview shows exactly what will be seeded before writing any rows
- Never requires access to production databases
- Generates data with realistic distributions across columns and tables
- Most runs complete in under three minutes
| - REST API twin generation from OpenAPI spec
- Postgres wire protocol support
- Snowflake wire protocol support
- MCP server support
- Live behavior overlay on published specs
- One-command agent installation
- Deterministic test responses matching live behavior
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| What makes it different | - No production data exposure: generates all test data from schema alone, eliminating privacy and compliance risks
- Schema-aware generation creates coherent, relational data without manual seed scripts
- Integrated with AI editors through MCP server for seamless developer workflow
- Realistic data that surfaces real bugs, not random placeholder values
- Works at any scale with consistent data integrity from dozens to tens of millions of rows
| - No backend required, serves twins directly from specifications
- Supports multiple protocols: REST, Postgres, Snowflake, and MCP
- Production behavior fidelity through live behavior overlay
- MIT licensed open source with no cost
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 8 ▼ −19 (down) since last check | 27 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 27 | 5 |
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| Citation Flow (Majestic) | 32 | 39 |
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| Referring domains (Majestic) | 62 | 16 |
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Twinning