---
title: Extensions
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[API Reference](https://developers.cloudflare.com/api)
[Registrar Sandbox](https://developers.cloudflare.com/api/resources/registrar_sandbox)
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# Extensions
##### [List extensions](https://developers.cloudflare.com/api/resources/registrar_sandbox/subresources/extensions/methods/list)
GET/accounts/{account\_id}/registrar-sandbox/extensions
##### [Get extension](https://developers.cloudflare.com/api/resources/registrar_sandbox/subresources/extensions/methods/get)
GET/accounts/{account\_id}/registrar-sandbox/extensions/{extension}
##### ModelsExpand Collapse
ExtensionListResponse object {metadata, registration\_schema, transfer\_schema }
Extension entry with metadata and JSON Schema documents for registration and transfer operations.
metadata: object {name, tld }
Extension metadata.
name: string
The full name of the extension. For example, “co.uk”, or “uk”.
Link to this property
tld: string
The TLD of the extension. For example, for “co.uk”, it is “uk”. For “uk”, it is “uk”.
Link to this property
Link to this property
registration\_schema: unknown
JSON Schema describing the expected input structure for registration operations on this extension.
Link to this property
transfer\_schema: unknown
JSON Schema describing the expected input structure for transfer operations on this extension.
Link to this property
[Link to this property](<#(resource)%20registrar_sandbox.extensions%20%3E%20(model)%20extension_list_response%20%3E%20(schema)>)
ExtensionGetResponse object {metadata, registration\_schema, transfer\_schema }
Extension entry with metadata and JSON Schema documents for registration and transfer operations.
metadata: object {name, tld }
Extension metadata.
name: string
The full name of the extension. For example, “co.uk”, or “uk”.
Link to this property
tld: string
The TLD of the extension. For example, for “co.uk”, it is “uk”. For “uk”, it is “uk”.
Link to this property
Link to this property
registration\_schema: unknown
JSON Schema describing the expected input structure for registration operations on this extension.
Link to this property
transfer\_schema: unknown
JSON Schema describing the expected input structure for transfer operations on this extension.
Link to this property
[Link to this property](<#(resource)%20registrar_sandbox.extensions%20%3E%20(model)%20extension_get_response%20%3E%20(schema)>)