/cursor-tutorials

How to get better documentation from Cursor

Learn practical tips to improve AI documentation quality in Cursor and streamline your workflow with clearer, more useful outputs.

Matt Graham, CEO of Rapid Developers

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How to get better documentation from Cursor

The best way to get better documentation from Cursor is to give it extremely clear prompts, keep the context small and focused, provide real code or real file paths, and explicitly tell Cursor what format you want the documentation in. Cursor is not a mind reader — if you don’t guide it tightly, it will generate vague or generic docs. When you focus it on specific functions, components, or files, and ask for documentation in a structured format, its output becomes dramatically clearer and more useful.

 

Why Cursor Struggles Without Guidance

 

Cursor doesn’t “see” your entire project unless you explicitly bring files into context. The Composer panel helps, but it still relies on what you select, what you paste, and what you highlight. If your prompt is too broad, or if Cursor doesn’t have the right files loaded, it tries to guess — and that’s when you get fluffy, unhelpful documentation.

So the solution is to feed Cursor exactly what it needs and control the output format tightly.

 

Steps to Get Better Documentation in Cursor

 

  • Highlight the exact code you want documented. This is the most reliable method. Select a function, class, React component, or entire file, then press Cmd/Ctrl + K. Cursor’s answer will be dramatically more accurate because it knows exactly what it should focus on.
  • Tell Cursor what type of documentation you want. Cursor responds best to formats like:
    • JSDoc for JavaScript and TypeScript
    • docstrings for Python
    • inline comments
    • README-style explanations
  • Limit the scope. Cursor works best when the documentation request is for:
    • One file
    • One component
    • One API route
    • One module
    Trying to “document the whole repo” is where Cursor gets messy and imprecise.
  • Tell Cursor what the audience is. This helps tone and technical depth. For example:
    • "Document this for a junior developer who needs to understand how to modify it."
    • "Write this as a production-level internal doc for engineers."
  • Ask for documentation in a structured template. This lowers hallucinations and keeps the output predictable.
  • Avoid generic prompts like 'document this'. Cursor does much better with constraints and boundaries.

 

Example of a Good Prompt

 

If you highlight a function in JavaScript and run:

Please generate JSDoc for the selected function. 
Keep the explanations short and accurate. 
Do not change any logic or rename anything. 
Only add documentation comments above the function.

You’ll get clean, correct JSDoc and Cursor won’t rewrite your code.

 

Example of a Good Prompt for README-Style Docs

 

If you highlight an entire file:

Write a short README-style explanation of this file.  
Explain what it does, what inputs it expects, and how other parts of the app use it.  
Do not suggest changes.  
Only explain the existing behavior.

This gives you understandable documentation without Cursor “fixing” or “improving” anything unintentionally.

 

Use the Composer Panel Instead of Chat for Large Explanations

 

When documenting a medium or large file, open the Composer, add the file from the file tree, and ask for structured docs. The Composer gives Cursor a more stable context so it won’t forget parts of the file halfway through the explanation.

  • Drag the file into Composer
  • Add “Include file contents” if needed
  • Ask for the exact documentation style you want

 

Give Cursor a Documentation Template to Follow

 

This is one of the most powerful techniques because it reduces hallucinations. For example:

Use this exact template when documenting the selected file:

- Purpose of the file
- Important functions/classes
- Inputs and outputs
- How it interacts with other modules
- Any side effects
- Notes for future developers

Only fill out this template. No extra sections.

Cursor becomes much more consistent and readable when you force structure like this.

 

Keep Context Clean — Remove Irrelevant Chat History

 

Cursor sometimes drags previous conversations into new answers. To avoid this:

  • Open a new chat window for new documentation tasks
  • Remove extra files from the Composer
  • Rerun the request with only the needed file selected

This makes the output cleaner and less “drifty.”

 

When Cursor Still Gives Bad Documentation

 

If Cursor produces something confusing:

  • Ask it to rewrite the documentation in simpler language
  • Ask it to shorten or lengthen sections
  • Ask specifically: "Which parts of this documentation are assumptions? Mark them." This reveals hallucinations.

Then ask it to regenerate the doc without those assumptions.

 

Summary

 

You get dramatically better documentation from Cursor when you keep the scope tight, provide real code context, and ask for a specific structure. Highlighting the exact code and telling Cursor precisely how to format the docs gives the most reliable and useful results — and avoids the vague or overly confident explanations Cursor sometimes generates when it has to guess.

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