---
title: "Fetch an instance of an Extension for the Installed Add-on."
method: GET
path: "/marketplace/InstalledAddOns/{InstalledAddOnSid}/Extensions/{Sid}"
tags: ["PreviewMarketplaceInstalledAddOnExtension"]
---

# Fetch an instance of an Extension for the Installed Add-on.

`GET /marketplace/InstalledAddOns/{InstalledAddOnSid}/Extensions/{Sid}`

## Request

- Base URL: `https://preview.twilio.com`
- URL: `https://preview.twilio.com/marketplace/InstalledAddOns/{InstalledAddOnSid}/Extensions/{Sid}`
- Auth: HTTP basic

Fetch an instance of an Extension for the Installed Add-on.

## Path parameters

- `InstalledAddOnSid` string, required
- `Sid` string, required

## Response `200`

OK

- PreviewMarketplaceInstalledAddOnInstalledAddOnExtension
  - `sid` string, nullable: The unique string that we created to identify the InstalledAddOn Extension resource.
  - `installed_add_on_sid` string, nullable: The SID of the InstalledAddOn resource to which this extension applies.
  - `friendly_name` string, nullable: The string that you assigned to describe the resource.
  - `product_name` string, nullable: The name of the Product this Extension is used within.
  - `unique_name` string, nullable: An application-defined string that uniquely identifies the resource.
  - `enabled` boolean, nullable: Whether the Extension will be invoked.
  - `url` string, uri, nullable: The absolute URL of the resource.

---

[API](https://skmtc.dev/twilio/apis/twilio-preview.md) - [All operations](https://skmtc.dev/twilio/apis/twilio-preview/llms.txt) - [OpenAPI document](https://skmtc.dev/twilio/apis/twilio-preview/revisions/1d44f6bde1ff?raw)