# Create Custom Index > Create an index for custom entities data. Create an index for custom entities data. Authentication Required: `Yes` ```bash ugs cloud-save data index custom create [options] ``` ## Arguments `` An array of fields in an index represented in json. Each field must be unique within the array. Each field accepts a `key` string and an `asc` field, set to true or false. Index creation commands can use either a `fields` argument or a `body` argument. If both are set, `fields` will be used. Sample Fields Argument ```text --fields "[{\"key\":\"myIndexedKey\",\"asc\":true},{\"key\":\"myIndexedKey2\",\"asc\":false}]" ``` `` A string representing the visibility of the index. Must be one of `default` or `private`. `` The index definition in JSON. If this is a file path, the content of the file is used; otherwise, the raw string is used. If `fields` is set, it is used instead. Sample Index Creation Body ```json { "indexConfig": { "fields": [ { "key": "myIndexedKey", "asc": true }, { "key": "myIndexedKey2", "asc": false } ] } } ``` ## Documentation For more documentation on index creation, see the [Unity Service API Docs](https://services.docs.unity.com/cloud-save-admin/v1/index.html#tag/Data/operation/createDefaultCustomIndex). ## Options | Option | Alias | Description | | ---------------- | ---------------------- | ----------------------------------- | | project-id | -p, --project-id | The Unity cloud project ID. | | environment-name | -e, --environment-name | The services environment name. | | help | -?, -h, --help | Display help and usage information. | | quiet | -q, --quiet | Reduce logging to a minimum. | | json | -j, --json | Use JSON as the output format. |