> ## Documentation Index > Fetch the complete documentation index at: https://docs.stigg.io/llms.txt > Use this file to discover all available pages before exploring further. # Plan metadata You can store **metadata** on each plan. This metadata can be accessed through the Stigg SDKs, API, and webhooks, allowing the hosting application or third-party integrations to implement custom functionality. To add or update metadata for a plan: 1. In the **Metadata** section of the selected plan, click **Add** (if no metadata exists) or **Edit**. 2. Enter the relevant key-value pairs. 3. Click **Add** (if creating new metadata) or **Save changes** to apply your updates.