Code · Debug

Debug code with AI — find the bug, get the fix

Paste your code and the error message. Muse explains why it fails and returns a corrected version you can copy — in Chrome’s side panel, next to your stack trace.

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Example

The cause first, then the fix

Debug mode is tuned to find the root cause — not just to silence the error — and to show the smallest safe change.

Paste the error and stack trace together
Get the root cause in one sentence
A corrected snippet ready to copy
Ask “why?” or “other ways to fix it?”

Muse · Code · Debug · JavaScript

Cannot read properties of undefined (reading 'map')

return data.items.map(i => i.name);

data.items is undefined until the request finishes. Guard it with optional chaining and a default:

return (data?.items ?? []).map(i => i.name);

How to use it

Debug in three steps

Switch to Code

Open Muse and tap Code in the mode switcher.

Pick “Debug”

Choose the task and, optionally, the language.

Paste and send

Paste your code or describe what you need — then ask follow-ups.

Try these prompts

Things to ask

Why does this throw undefined is not a function?Explain this stack traceFix this off-by-one errorWhy is this React component re-rendering?

FAQ

Debug: common questions

Can Muse debug from a screenshot of an error?

Yes. Press Alt+Shift+S, capture the error dialog or terminal and ask Muse to explain and fix it.

Which model is best for debugging?

Muse Smart is designed for deeper reasoning and complex code — switch to it for tricky bugs.

Does Muse see my whole project?

No. Muse sees only what you paste, capture or attach. Include the relevant files and the full error for the best result.

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