ResearchResearch paperAgents & Tool Use · Large Language Models2 sources · Oct 19, 2026

Unsupervised Tool Evolution for Coding Agents in Data-Lake Analytics

We propose TEAL (Tool Evolution for Analytics over data Lakes), which evolves a library of tools and usage skills for a given Worker agent without labels.

Key points

  • Coding agents can answer analytical questions over a data lake by discovering, cleaning, and joining the relevant data.
  • Since a ground-truth label for a data-lake question requires an expert to solve it first, we consider the unsupervised setting.
  • Two agents propose tools from complementary evidence, an Explorer from the data lake itself and a Critic from Worker trajectories.
  • We also introduce TEAL-Q, which generates synthetic questions for tool evolution when real ones are unavailable.

Sources (2)

Extractive summary: sentences quoted from the sources.

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