sql-steward is an open-source governed SQL MCP server that compiles queries from a controlled semantic layer, blocks PII, and logs every call for auditability. It supports multiple SQL dialects and is designed for data engineers who need secure, compliant, and transparent query execution in environments using LLM agents.
sql-steward is a Frameworks & SDKs product. It focuses on enabling secure, governed, and auditable SQL query execution without exposing sensitive data or allowing direct SQL writing by agents. sql-steward is an open-source project aimed at data engineers. The project is open source (MIT). It runs on the command line, and it can be self-hosted.
Pawansingh3889 builds and maintains sql-steward, and the product first shipped in 2026. The project is developed in the open on GitHub with 15 commits in the last 90 days. Among its 5 catalogued features are Governed SQL access, semantic layer, and PII blocking. It exposes integrations via an MCP server.
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