> For the complete documentation index, see [llms.txt](https://docs.getmesa.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.getmesa.com/tools/activity-log.md).

# Activity Log

Add the MESA Activity Log tool to a workflow to record labeled data when it runs, which helps you debug your setup and trace what each step received.

The **Activity Log** tool allows you to log information about your workflow when it runs. This can be used to help debug issues with your setup.

Fields included in the Activity Log are:

* **Activity Message:** Label the data that you'd like to log so that you can easily recognize the Activity Log's logging. Example: Order Data.
* **Payload Value:** Add [Variables](https://docs.getmesa.com/workflow-builder/fields/variables/) that you'd like to view the data of. You are allowed to add multiple variables and characters.

<figure><img src="https://docs.getmesa.com/assets/image%20%28220%29.png" alt="Screenshot of the MESA Activity Log tool step showing the Activity Message and Payload Value fields used to log workflow data. Spotlight the Activity Message and Payload Value fields."><figcaption></figcaption></figure>

Logs created from this step can be found in your workflow's **Logs** tab.

Here is an example of the logged information specified in a workflow and where you can see additional details in the logs.

<figure><img src="https://docs.getmesa.com/assets/image%20%28221%29.png" alt="Screenshot of the MESA Logs tab showing the logged Activity Log information from a workflow run with additional details. Spotlight the Activity Log entry in the Logs tab."><figcaption></figcaption></figure>