Weavori

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Weavori is a zero-config PostgreSQL synthetic data generator. Point it at any Postgres database and it reads your schema, including tables, foreign keys, column types, constraints, and value distributions. It then produces referentially intact, production-realistic data in one command. No YAML, no DSL, no per-column mapping. Parents generate before children in foreign-key dependency order, so integrity holds by construction rather than being checked after the fact. Generation samples pg_stats, so distributions, timelines, and conditional states match a real workload. Typical schemas under 200 tables complete in about two minutes, and constant-memory streaming means row counts are not limited by the tool. Output streams to JSON or CSV on stdout or loads directly into a target database via COPY. Weavori runs as a single binary from npx on macOS, Linux, and Windows, authenticates CI with API keys and semantic exit codes, and includes a built-in MCP server so AI assistants like Claude Desktop and Cursor can drive generation. It is freemium: a permanent free tier of 2,000 rows per month, and Pro at $15/month flat for 1 million rows. Generation runs locally, so database contents never leave your infrastructure.