research · since 2026-09-18
MCP Guarded Toolkit
Hone125
A local-first MCP proof of concept that exposes guarded SQL and knowledge-base tools. Its SQL path combines statement validation, AST inspection, execution-plan checks, scope authorization, row limits, and bounded rewrite attempts, with offline tests and reproducible metrics.
mcpsqlguardrailssqlitelocal-first
desk notes
Verified 2026-09-18. Six MCP tools, three SQL guardrail layers, scope enforcement, bounded rewrite state, local metrics, and offline tests are documented. The repository explicitly marks model-dependent text-to-SQL measurements as blocked where credentials are unavailable; do not interpret the guardrail tests as an end-to-end NL2SQL accuracy benchmark.