CatMaster: An Agentic Autonomous System for Computational Heterogeneous Catalysis Research

• URL: http://arxiv.org/abs/2601.13508v1
• Date: Tue, 20 Jan 2026 01:51:12 GMT
• Title: CatMaster: An Agentic Autonomous System for Computational Heterogeneous Catalysis Research
• Abstract summary: We present CatMaster, a large-language-model (LLM)-driven agent system that turns natural language requests into complete calculation workspaces.<n>CatMaster maintains a persistent project record of key facts, constraints, and file pointers to inspection and restartability.
• Score: 7.778196807731191
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Density functional theory (DFT) is widely used to connect atomic structure with catalytic behavior, but computational heterogeneous catalysis studies often require long workflows that are costly, iterative, and sensitive to setup choices. Besides the intrinsic cost and accuracy limits of first-principles calculations, practical workflow issues such as keeping references consistent, preparing many related inputs, recovering from failed runs on computing clusters, and maintaining a complete record of what was done, can slow down projects and make results difficult to reproduce or extend. Here we present CatMaster, a large-language-model (LLM)-driven agent system that turns natural language requests into complete calculation workspaces, including structures, inputs, outputs, logs, and a concise run record. CatMaster maintains a persistent project record of key facts, constraints, and file pointers to support inspection and restartability. It is paired with a multi-fidelity tool library that covers rapid surrogate relaxations and high-fidelity DFT calculations for validation when needed. We demonstrate CatMaster on four demonstrations of increasing complexity: an O2 spin-state check with remote execution, BCC Fe surface energies with a protocol-sensitivity study and CO adsorption site ranking, high-throughput Pt--Ni--Cu alloy screening for hydrogen evolution reaction (HER) descriptors with surrogate-to-DFT validation, and a demonstration beyond the predefined tool set, including equation-of-state fitting for BCC Fe and CO-FeN4-graphene single-atom catalyst geometry preparation. By reducing manual scripting and bookkeeping while keeping the full evidence trail, CatMaster aims to help catalysis researchers focus on modeling choices and chemical interpretation rather than workflow management.

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