> ## Documentation Index
> Fetch the complete documentation index at: https://terminal49-vorflux-dev-12120-supported-document-types.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# List custom field definitions

> List every custom field definition configured for your Terminal49 account, including data type, slug, and the target resource each definition applies to.

List all custom field definitions available to your account.

## Query filters

| Filter                 | Description                                       |
| ---------------------- | ------------------------------------------------- |
| `filter[entity_type]`  | Filter by entity type (`Shipment` or `Container`) |
| `filter[data_type]`    | Filter by data type                               |
| `filter[display_name]` | Filter by display name (prefix match)             |