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arXiv · 2512.01089

CodeDistiller: Automatically Generating Code Libraries for Scientific Coding Agents

Peter Jansen·Samiah Hassan·Pragnya Narasimha
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Abstract

Automated Scientific Discovery (ASD) systems can help automatically generate and run code-based experiments, but their capabilities are limited by the code they can reliably generate from parametric knowledge alone. As a result, current systems either mutate a small number of manually-crafted experiment examples, or operate solely from parametric knowledge, limiting quality and reach. We introduce CodeDistiller, a system that automatically distills large collections of scientific Github repositories into a vetted library of working domain-specific code examples, allowing ASD agents to expand their capabilities without manual effort. Using a combination of automatic and domain-expert evaluation on 250 materials science repositories, we find the best model is capable of producing functional examples for 74% of repositories, while our downstream evaluation shows an ASD agent augmented with a CodeDistiller generated library produces more accurate, complete, and scientifically sound experiments than an agent with only general materials-science code examples. We also evaluate LLM-as-a-judge ratings against domain-expert ratings in an A/B testing paradigm, finding moderate agreement and suggesting that inexpensive proxy metrics may be feasible for evaluating scientific discovery systems at scale.

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Peter Jansen, Samiah Hassan, Pragnya Narasimha. 2025-11-30. CodeDistiller: Automatically Generating Code Libraries for Scientific Coding Agents. https://arxiv.org/abs/2512.01089

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