Cursor

What Are Cursor's Context Window Limits for Large Repositories?

Cursor indexes up to 10,000 files and holds roughly 20,000 tokens of active context per session. On very large repos (100k+ files), it uses selective retrieval — only the most semantically relevant files appear in context, which can cause it to miss cross-module dependencies. The workaround: use .cursorignore to exclude build artifacts and node_modules, keeping the indexed set tight.

Also see: Windsurf · Claude Code

How Reliable Is Cursor for Multi-File Refactors?

Cursor's Agent mode can span multiple files but is probabilistic — it works well when changes are structurally similar (rename, extract, move) and less reliably when refactors require understanding business logic spread across many layers. For large refactors, break them into single-concern passes and review diffs between each.