> ## Documentation Index
> Fetch the complete documentation index at: https://mux.coder.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Debugging

> View live backend logs and diagnose issues

The **Output** tab streams Mux's backend logs in real time — useful for diagnosing tool failures, MCP server issues, or unexpected behavior.

## Opening the Output tab

Open the command palette with `Ctrl+Shift+P` (`⌘+Shift+P` on macOS). Type `>` to switch to command mode, then run **Show Output**. This opens the Output tab in the right sidebar.

You can also press `F4` to open the command palette directly in command mode (prefilled with `>`), then run **Show Output**.

To close it, open command mode again (`>` or `F4`) and run **Hide Output**.

## Filtering by level

A dropdown at the top of the Output tab filters logs by minimum severity: `debug`, `info`, `warn`, or `error`. The default is `info`. Your selection is persisted across sessions.

## Clearing logs

The trash icon clears all log entries — both in the UI and on disk. This is useful when you want a clean slate before reproducing an issue.

## Opening the raw log file

The **Open Log File** command (also in the command palette) opens the underlying log file in your system's default viewer. Useful when you need to search, copy, or share the full log output.