---
updatedAt: 2026-06-28T17:53:44.000Z
agentTools:
  projectIndex: https://developers.taboola.com/backstage-api/llms.txt
---

# Viewability Tag Item Object

<Table align={["left","left","left","left"]}>
  <thead>
    <tr>
      <th style={{ textAlign: "left" }}>
        Name
      </th>

      <th style={{ textAlign: "left" }}>
        Modifiers & Defaults
      </th>

      <th style={{ textAlign: "left" }}>
        Type
      </th>

      <th style={{ textAlign: "left" }}>
        Description
      </th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td style={{ textAlign: "left" }}>
        type
      </td>

      <td style={{ textAlign: "left" }}>
        _Required_
      </td>

      <td style={{ textAlign: "left" }}>
        String<br />

        * _Possible values_*:
        * _IAS_ <br/>
        * _GOOGLE_DCM_ <br/>
        * _DOUBLE_VERIFY_<br />
        * _Note_: Use the Dictionary to fetch an up-to-date list of possible values.<br />
      </td>

      <td style={{ textAlign: "left" }}>
        The tag _type_ (i.e. the _vendor_)
      </td>
    </tr>

    <tr>
      <td style={{ textAlign: "left" }}>
        tag
      </td>

      <td style={{ textAlign: "left" }}>
        _Required_
      </td>

      <td style={{ textAlign: "left" }}>
        String
      </td>

      <td style={{ textAlign: "left" }}>
        JS Tag
      </td>
    </tr>
  </tbody>
</Table>

The following example illustrates the object schema:

```json The values property contains a collection of Tag Items
{
   "viewability_tag": {
      "values": [
         {
            // Tag Item 1
         },
         {
            // Tag Item 2
         }
      ]
   }
}
```

```json Each Tag Item contains tag and type properties
{
   //...
   "viewability_tag": {
      "values": [
         {
            "tag": "<noscript class=...></noscript><script src=...></script>",
            "type": "DOUBLE_VERIFY"
         },
         {
            "tag": "<noscript class=...></noscript><script src=...></script>",
            "type": "IAS"
         }
      ]
   }
   //...
}
```