Code & technical documentation

Code and technical documentation power some of the most useful RAG systems being built today: coding assistants, documentation search, and internal developer tools that answer questions about how a library actually works. This category covers three related things, source code itself, the official docs that explain it, and the community question-and-answer threads where developers solve real problems. Each plays a different role, and the strongest assistants draw on all three.

The key choice is what kind of question you are answering. Raw source code is best when users need to see how something is implemented, but it chunks awkwardly, because a function only makes sense alongside the imports and context around it. Documentation is cleaner prose and retrieves well for “how do I” questions. Community Q&A captures the messy edge cases and error messages that official docs skip, which is often exactly what a stuck developer is searching for. Match the source to the questions your users really ask.

Licensing is the big trap here. Open source code carries a licence, and permissive terms like MIT or Apache differ sharply from copyleft ones like the GPL, which can require you to open-source work that builds on it. Training or retrieving over code does not free you from those terms, so check them before shipping anything commercial. Freshness matters too: framework docs and answers go stale fast, so a snapshot from two years ago may confidently describe an API that no longer exists.

The sources below span code repositories, documentation, and developer Q&A, so you can assemble the mix your assistant needs.