Your "AI" Pull Request was rejected and you don't know why

Introduction If you are reading this, it probably means that an open source maintainer has sent you this blog post and asked you to read it. Maybe it was me after you opened a Pull Request on projects I maintain. At the time of writing (early 2026), a lot of open source projects are getting bombarded with LLM/agent/AI Pull Requests that are either irrelevant, badly designed, or even completely…