OO-Harness：用面向对象设计演化智能体执行框架

Authors:Gaotang Li, Bhavana Dalvi Mishra, Yifei Ming, Yanfei Chen, Zhongying CuiZhu, Lesly Miculicich, Long T. Le, Rui Meng, Chun-Liang Li, Hanghang Tong, Chen-Yu Lee, Tomas Pfister

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Abstract:Agent harnesses are executable code that specifies the prompts, tools, and control flow around a language model. A single global harness can struggle with heterogeneous tasks that require different execution strategies. In this work, we introduce Object-Oriented Harness (OO-Harness), a harness optimization framework that evolves a hierarchy of executable harness classes using object-oriented design. During training, an evolution agent uses execution records to create a family of specialized harnesses, each implemented as a subclass of the base or an existing specialized harness via inheritance. At test time, a harness router uses routing lessons accumulated during training to select a specific harness for each task. Across three long-horizon benchmarks spanning business workflows, workspace tasks, and tool use, OO-Harness achieves the best performance among the compared methods, with an absolute improvement of up to 15% over the base. Extensive ablation studies examine the contributions of its core components.

Comments:	20 pages, 10 figures
Subjects:	Computation and Language (cs.CL); Software Engineering (cs.SE)
Cite as:	arXiv:2610.28380 [cs.CL]
	(or arXiv:2610.28380v1 [cs.CL] for this version)
	https://doi.org/10.48550/arXiv.2610.28380 arXiv-issued DOI via DataCite (pending registration)

Submission history

From: Gaotang Li [view email]
[v1] Tue, 20 Oct 2026 15:32:52 UTC (4,910 KB)