open-source · since 2026
Data Warden
Samuel Viciana Moreno
Spanish-language governed NL-to-SQL lakehouse agent prototype. Its implemented layers parse SQL into an allowlisted AST, enforce role/column/position policies, and estimate query cost from Iceberg manifests before DuckDB execution; generation, masking, and audit layers are not yet complete.
Verified 2026-09-02 from repository README and LICENSE. Project explicitly says it is under construction: rings 1, 3 and 4 work; generation (2) and masking/audit (5) do not yet exist. Maintainer reports 427 tests, 15/15 held-out attack cases with Wilson 95% interval [0.80, 1.00], 3,497 AST mutants with zero escapes, and mutation scores below the project gate. All measurements are self-evaluated. GitHub: 0 stars, 0 forks at discovery.