Seedfast fills a database with realistic, relationally valid data generated from its live schema. Nothing gets copied out of production and no production access is required, which is what makes it workable for teams in fintech, healthcare and anywhere else that a production dump sitting in a local environment counts as a compliance problem.
Because the schema is read on every run, the data matches whatever the database looks like today. A migration lands and the next run reflects it, so the maintenance that hand-written seed scripts and factory code tend to accumulate never starts piling up.
It ships as a CLI and as an MCP server, which means one run can be started from a terminal, from a CI job, or from an AI coding agent.
brew install seedfast-ai/tap/seedfast # macOS, Linux
npm install -g seedfast # any platform with Node.js$ seedfast seed --scope "fintech app with accounts, transactions and varied balances"
✓ Connected to PostgreSQL
✓ Found 14 tables
✓ Seeding [████████████████] 14/14 tables
✓ Seeded 128,400 records across 14 tables in 9.1s
The MCP server is built into the CLI, so there is nothing extra to install. Thirteen tools cover planning and running a seed plus inspecting the schema, and the agent reads run summaries and logs back as resources.
{
"mcpServers": {
"seedfast": {
"command": "npx",
"args": ["-y", "seedfast@latest", "mcp"],
"env": { "SEEDFAST_API_KEY": "sfk_live_your_api_key_here" }
}
}
}Client-by-client setup for Claude Desktop, Cursor, VS Code and Claude Code lives in the MCP setup guide.
Seedfast works with PostgreSQL today. Going PostgreSQL-first was deliberate, since its constraint and relationship system is the richest one out there and that is exactly where generating believable data gets hard. Support for MySQL, Oracle and SQLite is in development.
| Repository | What it is |
|---|---|
| homebrew-tap | Homebrew formula for the CLI |
| github-actions-demo | Working example of seeding a Postgres service container inside GitHub Actions |
The engine and the CLI are closed-source, so most repositories in this organization are private. What you find here is what you install or copy from.
- Documentation and getting started
- Blog — Postgres, test data and CI writeups
- Pricing — a 30-day free trial that does not ask for a card, then flat monthly plans that meter neither rows nor tokens
- Questions, bug reports and anything else: support@seedfa.st
