# Debug

Displays selected message properties in the debug sidebar tab and optionally the runtime log. By default it displays `msg.payload`, but can be configured to display any property, the full message or the result of a JSONata expression.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.contextual.io/documentation-and-resources/components-and-data/flows/node-reference/common/debug.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.