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E2048 - Harness Handbook: Making Evolving Agent Harnesses Readable,Navigable, and Editable

Published: July 17, 2026

Duration: 19:12

🤗 Upvotes: 172 | cs.AI, cs.SE

Authors:
Ruhan Wang, Yucheng Shi, Zongxia Li, Zhongzhi Li, Yue Yu, Junyao Yang, Kishan Panaganti, Haitao Mi, Dongruo Zhou, Leoweiliang

Title:
Harness Handbook: Making Evolving Agent Harnesses Readable,Navigable, and Editable

Arxiv:
http://arxiv.org/abs/2607.13285v1

Abstract:
The capability of a modern AI agent depends not only on its foundation model but also on its harness, which constructs prompts, manages state, invokes tools, and coordinates execution. As models, APIs, environments, and requirements evolve, the harness must be continually modified. Before such a c...