> ## Documentation Index
> Fetch the complete documentation index at: https://docs.omneo.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Group Definition API

> Create and manage Group Definitions for static, dynamic, and favourite profile groups.

The Group Definition API lets you create and manage **Group Definitions**, which are the configuration objects that drive profile segmentation in Omneo. A Group Definition specifies whether a group is `static` (manually managed), `dynamic` (rule-evaluated on a schedule), or `favourite` (profile-owned and connection-backed).

See [Groups](/concepts/groups) for a full explanation of how each type works.

<Info>
  Profile-owned group instances are managed through the profile-scoped endpoints. See [Profile Group API](/api-reference/profile-group/group-instances-this-profile-owns) for the profile-scoped counterpart.
</Info>

## Scopes

| Scope                      | Required for                         |
| -------------------------- | ------------------------------------ |
| `create-group-definitions` | Creating a Group Definition          |
| `read-group-definitions`   | Listing or reading Group Definitions |
| `update-group-definitions` | Updating a Group Definition          |
| `delete-group-definitions` | Deleting a Group Definition          |