Yes
my experience improved immensely by using a detailed context document (~3,000 words) with all sorts of relevant information
felipeerias on Hacker News
In the thread “6 weeks of Claude Code”, replying to this comment
Helped: Detailed context document with architecture and coding style.
… In Claude Code this is typically done via a CLAUDE.md document at the root of the codebase. I work on Chromium and my experience improved immensely by using a detailed context document (~3,000 words) with all sorts of relevant information, from the software architecture and folder organisation to the C++ coding style. (The first draft of that document was created by Claude itself from the project documentation.)