Mnemiq
Open-source text-to-SQL you can tune and measure on your own database
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If you put an LLM in front of a database, scoping the schema to the user before the prompt stops it leaking restricted tables and cuts tokens.
SchemaGate is a Python library that picks which database tables a text-to-SQL model gets to see, based on who is asking. It reflects the schema with SQLAlchemy, retrieves relevant tables with BM25 and vector search, and removes anything the caller has no rights to before the prompt is built. It ships a CLI, an MCP server and a LangChain retriever, and publishes benchmarks on Spider 2.0-lite and BIRD. Apache-2.0, alpha (v0.1).
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