build-your-ai-coding-assistant

Why we included this project

The Thoughtworks open-source community behind AutoDev wrote this as a practical walkthrough, not a tool you install. It takes you through the three stages that usually sink a DIY project: building the IDE plugin and its telemetry, picking and fine-tuning a model, and engineering the datasets that determine completion quality. The authors are specific about the trade-offs, like running a small, medium, and large model together to balance response speed against generation quality, and they explain real techniques such as fill-in-the-middle completion, context engineering, and RAG-style code search. If you want to understand how commercial assistants work under the hood, or you're scoping an in-house assistant, this is a useful reference to read before you commit to a stack.