> ## Documentation Index
> Fetch the complete documentation index at: https://plain-mattvagni-patch-1.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Add labels

You can add multiple labels to a thread with a call to `addLabels`. Label type IDs passed to this endpoint should not be archived, we return a validation error with code `cannot_add_label_using_archived_label_type` for any which are submitted.

If a label type you provide is already added to the thread we will return a validation error with code `label_with_given_type_already_added_to_thread`.

You can retrieve label type IDs in the Plain UI settings by hovering over a label type and selecting 'Copy label ID' from the overflow menu.

This operation requires the following permissions:

* `label:create`

<Tabs>
  <Tab title="Typescript SDK">
    <Snippet file="typescript-sdk/add-labels.mdx" />

    This will output:

    <Snippet file="typescript-sdk/add-labels-response.mdx" />
  </Tab>

  <Tab title="GraphQL">
    <Snippet file="graphql/add-labels.mdx" />
  </Tab>
</Tabs>