SWE-agent: Automating Software Engineering with Language Models

SWE-agent: Automating Software Engineering with Language Models

Summary

SWE-agent is an innovative GitHub repository that empowers language models to autonomously fix issues in real-world software projects. This powerful tool can also be employed for offensive cybersecurity and competitive coding challenges, representing a significant advancement in automated software engineering. Developed by researchers from Princeton and Stanford, it was featured at NeurIPS 2024.

Repository Info

Updated on October 18, 2025
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Introduction

SWE-agent is a groundbreaking project that enables your language model of choice, such as GPT-4o or Claude Sonnet 4, to autonomously interact with tools and resolve issues within real GitHub repositories. Beyond automated bug fixing, it extends its capabilities to finding cybersecurity vulnerabilities and performing various custom coding tasks. Recognized at NeurIPS 2024, SWE-agent is a testament to the potential of AI in transforming software development and security.

With over 17,600 stars and 1,800 forks, this Python-based project has garnered significant attention from the developer community.

Installation

Getting started with SWE-agent is straightforward. For the quickest way to try it out, you can launch it directly in your browser using GitHub Codespaces:

Open in GitHub Codespaces

For a more detailed setup, including installation from source, refer to the official documentation:

Examples

SWE-agent offers diverse applications, showcasing its versatility:

Why Use SWE-agent?

SWE-agent stands out for several compelling reasons:

  • State of the Art: It achieves state-of-the-art performance on SWE-bench among open-source projects.
  • Free-flowing & Generalizable: The system provides maximum agency to the language model, allowing for flexible and generalizable problem-solving.
  • Configurable & Fully Documented: Governed by a single yaml file, it is highly configurable and comes with comprehensive documentation.
  • Made for Research: Designed with research in mind, it is simple and hackable, encouraging further innovation and experimentation.

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