What is a .cursorrules file?

It is a hidden file placed at the root of your project. It contains global instructions (e.g., 'Always use TypeScript') that the AI IDE automatically appends to every single prompt you send, ensuring architectural consistency across your entire codebase.

Can I just use the '@Codebase' command to let the AI figure it out?

Use it with extreme caution. '@Codebase' asks the AI to search your entire project for relevant files. It is often inaccurate and leads to attention dilution. Manually attaching specific files with '@filename' is always safer and more accurate.

What happens if I exceed the Token Limit?

The AI will either throw a hard error and refuse to generate, or it will 'truncate' your prompt by silently deleting the oldest files you attached, leading to unpredictable bugs.

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Context is King

Master the art of providing context. Learn how to explicitly target files, use global system rules to enforce architectural consistency, and manage the AI's attention mechanism to prevent hallucinations.

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