HTAA: Enhancing LLM Planning via Hybrid Toolset Agentization & Adaptation

• URL: http://arxiv.org/abs/2604.10917v1
• Date: Mon, 13 Apr 2026 02:33:50 GMT
• Title: HTAA: Enhancing LLM Planning via Hybrid Toolset Agentization & Adaptation
• Abstract summary: Hybrid Toolset Agentization & Adaptation (HTAA) is a hierarchical framework for scalable tool-use planning.<n>We propose a novel toolset agentization paradigm, which encapsulates frequently co-used tools into specialized agent tools.<n>We conduct experiments on a real-world internal dataset, InfoVerify, based on the POI validation workflow of China's largest online large-scale ride-hailing platform.
• Score: 33.91421362668113
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Enabling large language models to scale and reliably use hundreds of tools is critical for real-world applications, yet challenging due to the inefficiency and error accumulation inherent in flat tool-calling architectures. To address this, we propose Hybrid Toolset Agentization & Adaptation (HTAA), a hierarchical framework for scalable tool-use planning. We propose a novel toolset agentization paradigm, which encapsulates frequently co-used tools into specialized agent tools, thereby reducing the planner's action space and mitigating redundancy. To ensure effective coordination, we design Asymmetric Planner Adaptation, a trajectory-based training paradigm that aligns the high-level planner with agent tools via backward reconstruction and forward refinement. To validate the performance of HTAA, we conduct experiments on a real-world internal dataset, InfoVerify, based on the POI validation workflow of China's largest online large-scale ride-hailing platform, featuring long-horizon executable tool trajectories. Experiments on InfoVerify and widely-used benchmarks show that HTAA consistently achieves higher task success rates, requires short tool calling trajectories, and significantly reduces context overhead compared to strong baselines. Furthermore, in a production deployment, HTAA substantially reduces manual validation effort and operational cost, demonstrating its practical efficacy.

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