> ## Documentation Index
> Fetch the complete documentation index at: https://wundergraphinc-brendan-add-sof-link.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Feature Flags

> An overview of feature-flag (alias "ff") commands.

A feature flag is a group of one or more [feature subgraphs](/cli/feature-subgraph). Each feature subgraph represents a replacement of a specific base subgraph that composes a federated graph. Feature flags define labels that dictate the federated graphs to which they will apply when enabled. Setting the corresponding feature-flag header or cookie value allows different graph constellations to be served to clients.

## Minimum Requirements

| Package                 | Minimum version                                                                |
| ----------------------- | ------------------------------------------------------------------------------ |
| [wgc](/cli/intro)       | [0.58.0](https://github.com/wundergraph/cosmo/compare/wgc@0.57.7...wgc@0.58.0) |
| [router](/router/intro) | [0.95.0](https://github.com/wundergraph/cosmo/releases/tag/router%400.95.0)    |

<CardGroup>
  <Card title="Create Feature Flag" href="/cli/feature-flags/create-feature-flag" icon="plus" horizontal />

  <Card title="Disable Feature Flag" href="/cli/feature-flags/disable-feature-flag" icon="minus" horizontal />

  <Card title="Enable Feature Flag" href="/cli/feature-flags/enable-feature-flag" icon="check" horizontal />

  <Card title="Update Feature Flag" href="/cli/feature-flags/update-feature-flag" icon="pen-to-square" horizontal />

  <Card title="Delete Feature Flag" href="/cli/feature-flags/delete-feature-flag" icon="trash" horizontal />
</CardGroup>