Claude Code may fail because the chat has too much context
Claude Code can seem worse when the conversation has become too crowded with information. This is called : as the fills up, the model becomes less reliable at finding and using one specific detail inside it. Adding more files and instructions is not always better, because unrelated material can make the important parts harder to use.
Claude Code can be seen as a tool for managing what stays inside that working window. Important project rules should go in instead of only living in chat, because that file reloads from disk and survives /compact. Work should be aimed at exact files or with @-mention rather than letting the tool scan the whole codebase.
When a session gets long, /compact can shrink the conversation, and adding a focus such as an auth helps keep the useful parts clear.
Key points
- Claude Code can perform worse when too much information fills the chat.
- Important long-term instructions should live in , not only in conversation.
- Point Claude Code to specific files or instead of broad areas of the repo.
- Unrelated files can make the useful context harder for the model to use.
- Use /compact with a clear focus when a session gets long.