RefTool: Enhancing Model Reasoning with Reference-Guided Tool Creation

• URL: http://arxiv.org/abs/2505.21413v1
• Date: Tue, 27 May 2025 16:41:19 GMT
• Title: RefTool: Enhancing Model Reasoning with Reference-Guided Tool Creation
• Authors: Xiao Liu, Da Yin, Zirui Wu, Yansong Feng,
• Abstract summary: RefTool is a reference-guided framework for automatic tool creation.<n>It generates executable tools from reference content, validate them using illustrative examples, and organize them hierarchically into a toolbox.<n> Experiments on causality, physics, and chemistry benchmarks demonstrate that RefTool outperforms existing tool-creation and domain-specific reasoning methods.
• Score: 44.128974924517465
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Tools enhance the reasoning capabilities of large language models (LLMs) in complex problem-solving tasks, but not all tasks have available tools. In the absence of predefined tools, prior works have explored instructing LLMs to generate tools on their own. However, such approaches rely heavily on the models' internal knowledge and would fail in domains beyond the LLMs' knowledge scope. To address this limitation, we propose RefTool, a reference-guided framework for automatic tool creation that leverages structured external materials such as textbooks. RefTool consists of two modules: (1) tool creation, where LLMs generate executable tools from reference content, validate them using illustrative examples, and organize them hierarchically into a toolbox; and (2) tool utilization, where LLMs navigate the toolbox structure to select and apply the appropriate tools to solve problems. Experiments on causality, physics, and chemistry benchmarks demonstrate that RefTool outperforms existing tool-creation and domain-specific reasoning methods by 11.3% on average accuracy, while being cost-efficient and broadly generalizable. Analyses reveal that grounding tool creation in references produces accurate and faithful tools, and that the hierarchical structure facilitates effective tool selection. RefTool enables LLMs to overcome knowledge limitations, demonstrating the value of grounding tool creation in external references for enhanced and generalizable reasoning.

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