Object-Oriented Harness: Evolving Agent Harnesses through Object-Oriented Design

Gaotang Li, Bhavana Dalvi Mishra, Yifei Ming, Yanfei Chen, Zhongying CuiZhu, Lesly Miculicich, Long T. Le, Rui Meng · 2026 · arXiv

DOI: 10.48550/arXiv.2610.28380 · open-access PDF

Japanese

エージェントハーネスは、言語モデルの周辺のコマンド、ツール、およびコントロールフローを指定する実行可能なコードです. 単一のグローバルハーネスは、異なる実行戦略を必要とする異なるタスクと闘うことができます. この作品では、オブジェクト指向ハーネス(OO-Harness)を導入します。このハーネスは、オブジェクト指向のデザインを使用して実行可能なハーネスクラスの階層を進化させるハーネス最適化フレームワークです. トレーニング中に、エボリューションエージェントは、実行記録を使用して、それぞれベースのサブクラスとして実装される専門ハーネス、または既存の専門ハーネス

Machine translation (Meta M2M100); the English original follows.

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

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