warehouse-mcp

Production-ready MCP (Model Context Protocol) server for data warehouses. Supports Postgres, Oracle, Snowflake, BigQuery, Redshift, DuckDB, and MotherDuck with read-only enforcement, four-tier role-based access, optional warehouse-role impersonation (SET ROLE for native RLS/CLS), JSONL audit log, and optional output PII masking. Self-host via Docker or npx. Current version 0.4.2, released monthly. Differentiators: dialect-aware read-only validation, per-key RLS mapping, 13 tools including column profiling and time-series bucketing.