Seedweaver Mcp

SeedWeaver generates referentially coherent test data from your database schema, so foreign keys actually point to real primary keys and unique constraints stay unique. It exposes two tools: analyze_schema parses your CREATE TABLE DDL or JSON schema and reports generation order, while generate_seed_data outputs SQL INSERTs, JSON, or CSV with realistic values for names, emails, dates, and other common types. The free tier caps you at 2 tables and 50 rows per table. Pro removes limits and adds deterministic seeds, custom locales, and CSV export for $19/month. Useful when you need seeded databases for development or testing and don't want to hand-wire foreign key relationships or chase down constraint violations.