Paper

Yuanjue Fan, Yujie Fei

We introduce Self-Evolving Code (SEC), an autonomous system for continuous software maintenance. SEC monitors production application logs and error reports, uses LLMs to diagnose root causes, generates candidate patches, validates them through an extensive automated test pipeline (including regression, mutation, and property-based testing), and deploys verified fixes. Over a 6-month deployment on 3 open-source projects, SEC autonomously resolved 73.4% of reported bugs (168/229), with a false-positive patch rate of only 3.1%.