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title: Using Tags in API Visualizer
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product: API Visualizer
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# Using Tags in API Visualizer

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

You can add tags to an application, proxy, or other service. Similar to layers, there are two ways
of assigning a tag to a node: by using properties or through the API Visualizer UI.

If a tag is assigned to an application, the application will appear in every view in which the tags
are selected.

## Set the Tag Using Properties

You can automate adding tags to nodes by using `anypoint.platform.visualizer.tags=<name>, <name>`,
either in the application’s properties file or at deployment time through the Runtime Manager UI or
API. Note that this is an application property, not a server property.

When you use this property, the nodes automatically show the assigned tags in the **View** card of
API Visualizer. You can add but cannot override tags in the UI. Additionally, you can modify the
tags only in properties.

In the following example, the tag `demo` was added through properties. Therefore, you cannot modify
the `demo` tag on the canvas. However, `project-a` and `project-b` were created using the UI, so you
can modify them.

![properties tags](/mulesoft/current/en-us/visualizer/_images/properties-tags.png)

## Set Tags Using the UI

By default, when you first view a node using API Visualizer, it does not have any tags assigned. You
can assign a tag to an existing node using the UI if it does not already have the same tag applied
through properties.

1.  In the Architecture visualization, select the application node to tag.  
    You can hold the shift key to select multiple nodes to apply tags to all the selected nodes at
    once.  
    _Result:_ The **Customization** section for the node appears in the **Details** tab of the
    node’s card as shown in the following image:

    ![select node](/mulesoft/current/en-us/visualizer/_images/select-node.png)

2.  In the **Customization** section, click **\+ Add tag** as shown in the following image:

    ![add tag](/mulesoft/current/en-us/visualizer/_images/add-tag.png)

3.  Type the name of the tag to apply. Existing tags appear in a drop-down list as you begin to
    type.  
    You can either:

    - Select an existing tag, or

    - Enter a name for a new tag, and click **Create tag <your-tag>**, or

    - Enter a name for the new tag, and press enter.

      > [!NOTE] You cannot apply the same tag to one node multiple times.

      ![create tag](/mulesoft/current/en-us/visualizer/_images/create-tag.png)

      _Result:_ The tags that you added to a node are listed in the **Customization** section. This
      node is included in the list of services if you [filter by this tag](https://docs.mulesoft.com/visualizer/view#customize-view).

## Delete a Tag

You can delete tags from API Visualizer. Deleting a tag does not delete the associated nodes.

To delete a tag assigned using the `anypoint.platform.visualizer.tags=<name>` property, return to
the application’s properties file and delete the assignment
`anypoint.platform.visualizer.tags=<name>`.

To delete a tag that was configured in the UI:

1.  In the Architecture visualization, select a node with the tag you want to delete.

2.  Locate the tag in the **Customization** section, and click the **X** on the tag to delete.

## See Also

- [Defining a View in API Visualizer](https://docs.mulesoft.com/visualizer/view)

- [Filtering by Tags](https://docs.mulesoft.com/visualizer/view#customize-view)

- [Using Layers in API Visualizer](https://docs.mulesoft.com/visualizer/layers)

- [API Visualizer Architecture Visualization](https://docs.mulesoft.com/visualizer/architecture-visualization)