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About this paper

Jia Feng, Alyssa Wu, Cuiyun Gao, Yunlong Wang, Songyuanyi Lu, Zhichao Hu

FeatureLoop evaluates whether coding agents can add requested behavior, repair reported failures, and preserve earlier functionality. It follows repository workspaces, accumulating requirements and checking the repository baseline across three workflows: upfront requests, progressive requests, and progressive requests with correction. Across 12 models and 61 tasks, StrictPass was 64.1% with correction, while 15.4% of failed states recovered within two revisions.

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