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A constrained SQL harness helped NVIDIA place second in the KDD Cup data-agent competition

developer.nvidia.com by Jiwei Liu 11 min read Editor score 8/10

The team unified data in SQLite, added preflight schema scouting, and limited the agent to a small toolset with middleware and persistent state. These design choices offer practical ways to reduce routing errors and keep agent context focused.

What: NVIDIA's KGMON team placed second in the KDD Cup 2026 Data Agents competition with a constrained harness around a small, fixed LLM.
How: The system unified structured sources in SQLite, exposed narrow schema() and sql() tools, and used preflight schema scouting.
Why it matters: Limiting tool choices and preserving inspectable traces helps engineers build and improve reliable agents around smaller models.

The harness exposes database structure and queries through a narrow SQLite tool path. Sketched from the article's own text.

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