Xcode 27's Developer Documentation component (Xcode → Settings → Components) is not
a bundle of .doccarchives. It's an on-device vector-search SQLite database, the RAG
index behind Xcode's AI documentation search. You can read it directly.
Why this is interesting for agentic / AI-assisted coding:
- It's a local, queryable corpus of the installed Xcode Developer Documentation, so you can ground a coding agent on it with no scraping and no network.