How to Get Comfortable Using Claude Code on a Large Repository?

Clone the repo to your local machine and set it up with Claude. First, let it create its memory by running through the entire codebase. This helps build context. Use plan mode or Claude's interface to clarify your objectives and the value behind your tweaks, almost like a lightweight PRD. This prevents you from just ‘letting it run’ and keeps you in the loop about what it’s doing. After each task, update its memory so you maintain context. Look up ‘cline memory back’ to implement this; it’ll really transform how you work!

Honestly, just dive in and give it a shot! Remember, it’s just files you’re working with. Once you get the hang of it, you’ll realize it’s not that intimidating!

Check out the best practices outlined by Anthropic. They suggest using multiple CLAUDE.md files to save context instead of packing everything into one. A good approach is to first let Claude create a plan for what you want to do, and then review that plan before you let it run. This way, you won’t be caught off guard! Also, remember to clear the session before executing to reset its extended thinking capability if needed.

You can monitor costs during your session using the /cost command. If at any time you feel things are going off track, just hit ESC or Ctrl+C to stop Claude. It’s super handy to run it in read-only mode so it won't make any changes without your go-ahead. Also, having a clearly defined CLAUDE.md file saves you from token wastage and keeps everything in check.

If you have a MAX account, you can limit your spending to a capped amount, like $100 a month. That way, you can experiment without the fear of overspending.