# Self-Evolving Harness on Multiple Tasks with the Agent as Its Own Optimizer

**Published:** October 1, 2026
**Author:** Qiankai Xu
**Source:** arXiv — cs.AI
**Language:** en-US
**HTML:** https://aiqazaqstan.com/en/articles/self-evolving-harness-on-multiple-tasks-with-the-agent-as-its-own-optimi

A harness is the code around a language-model agent that organizes prompts, calls tools, manages context, and controls execution. As models grow stronger, recent work has begun to let agents improve their own harnesses, a line of work known as self-evolving harnesses. In most…

> From the original source: **arXiv — cs.AI**
> [Read full article at arXiv — cs.AI](https://arxiv.org/abs/2609.38372)

**Tags:** #arXiv

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